Allowed per mille of alcohol in the blood or exhaled air - how much you can drink while driving. Alcohol calculator and acceptable blood alcohol levels

After drinking a small amount of beer, a driver's blood test can show the allowable alcohol limit. Alcohol abuse is a pressing problem in society. Many drivers after drinking alcoholic beverages feel free to drive. If a driver has indicators that are different from the permissible norm, the traffic police inspector has every right to detain.

How much can you drink while driving

Driving under the influence of alcohol is extremely dangerous. Ethyl alcohol has a destructive effect on the human body, disrupts vital processes. The driver, by simple calculations, can independently determine how much you can drink while driving and save yourself from punishment. Most beers contain 3-6% alcohol.

In a man weighing 75 kg, when drinking 100 g of beer, the alcohol content is 0.08 ppm (he received 0.08 g of alcohol per 1 kg of weight). This amount is 4 times less than the permissible norm of alcohol. The average man can consume no more than 400 grams of beer before driving. You can’t deceive your body: a bottle of beer shows the presence of alcohol above the norm. Ethyl alcohol neutralizes the liver, it does this at a rate of 0.1 ppm per hour for men and 0.085 for women. With a simple arithmetic trick, you can calculate when it will be completely neutralized.

What is the legal limit for alcohol

It is known that the permissible rate of alcohol is the amount per mille that can be contained in the blood of the driver or in the air exhaled by him. The numerical expression of this was shown as follows: 0.35 - the permissible content of alcohol in the blood, 0.16 - the permissible level of alcohol in the exhaled air. These indicators are determined using special devices. The allowable value is determined taking into account the possible error.

Permissible level of alcohol while driving in ppm

Assumes the permissible rate of alcohol while driving in ppm, the minimum amount of alcohol that does not cause deviations in the mental and physiological state. Driving a vehicle requires concentration, redistribution of attention, reaction speed, general stable emotional state and well-being. A drunk driver is a serious danger on the road. An indicator of 0.35 is an acceptable ppm rate that does not violate physiology and mental processes.

What is the legal limit for alcohol while driving?

Since 2013, the legal limit for alcohol while driving has been increased in the Russian Federation. This does not mean that the permitted ppm allow you to completely freely drive a vehicle while slightly intoxicated. The revision of the indicator (previously it corresponded to zero) is associated with the peculiarities of the digestion of certain foods and drinks, this list included:

• non-alcoholic beer;
• bread kvass;
• sweet yeast baked goods;
• fermented milk products (for example, kefir and yogurt);
• orange and other fruit juices;
• overripe bananas;
• chocolate.

This group includes drugs (for example, alcohol tinctures), tobacco products. After taking these products, drugs, a small amount of ethanol enters the bloodstream, which is easily determined by a breathalyzer. Many drivers have been fined just because of their culinary preferences. For this reason, the allowable standards have been revised.

What is ppm

To calculate fractions of a whole, it is not always convenient to use percentages, because sometimes there is a need to operate, for example, with thousandths. The physical meaning of 1 ppm is a tenth of a percent. A ppm is a small, precise unit of measure for evaluating impurities in liquids, in thousandths. When determining alcohol in the blood, 1% is a very large indicator, therefore, smaller units are used to determine the degree of intoxication.

How to count ppm

Any driver needs to be able to correctly count ppm, especially after drinking alcohol, even if the feast took place the day before. The rate of alcohol neutralization depends on the strength of the drink, its volume, human body weight, the amount of fluid in the body, gender, individual characteristics of the body, and the physiological state of the liver.

0.1 ppm corresponds to 0.045 mg of alcohol per 1 liter, this may seem like a negligible numerical value, but it accurately determines the degree of intoxication. Drivers do not take into account the time indicator of "weathering" of ethanol and get behind the wheel. A glass of beer 6% (200 ml) will be completely neutralized by a human body weighing 80 kg only after 1 hour 57 minutes. This is important to know for any person who plans to drive after drinking alcohol.

In the absence of ready-made tables at hand, we learn to solve a simple problem: “The mass of a man is 82 kg. He drank 50 ml of vodka, the strength of which is 40% and plans to drive. The proportion of water in the body of men is about 70%. How many ppm will the device for determining the degree of intoxication show?

1. We determine the mass of water using the proportion: 82 kg * 70%: 100% \u003d 57.4 kg.
2. We consider the amount of pure ethanol: 500 ml * 0.4 = 200 ml. In grams, this is 200 ml * 0.79 = 158 g (0.79 is the density of pure ethanol). 100% alcohol content 158 ​​g - 10% = 142.2 g.
3. 142.2/57.4 = 2.48. The indicator is far from the norm. It can mean deprivation of a driver's license and a trial.

Degrees of intoxication in ppm

Going on a trip while intoxicated is dangerous, because even the allowable amount of alcohol does not guarantee safety while driving. Three degrees of intoxication in ppm are generally accepted:

1. From 0.8 to 1.2 - corresponds to the initial stage, there is a violation of the perception of distance, the angle of side vision is distorted, when the headlights are switched to high beam, the effect of temporary blindness is pronounced.
2. From 1.3 to 2.4 - for a drunk person it is considered deep intoxication, the feeling of fear is dulled, attention is scattered, vision deteriorates, and the perception of reality changes.
3. From 4 to 5 - severe intoxication of the body occurs, breathing is disturbed, loss of consciousness occurs, coma may develop.

At how many ppm are deprived of rights

The law defines the figure 0.35 as the permissible dose of alcohol. It is designed for drivers who take alcohol-containing drugs, taking into account the error of the breathalyzer. When converted to specific alcoholic beverages (male, weight 80 kg, measured in an hour), this is:

• 50 g of vodka;
• 200 g dry red wine;
• 500 g of beer.

For traffic police officers, a driver with an indicator of 0.2 is considered sober. In case of initial detention and detection of an excess of the permissible norm, an administrative penalty (fine) is imposed, a ban on driving a vehicle for up to 2 years is introduced. They deprive the rights for 3 years, impose a fine of 50,000 rubles in the event of a repeated determination of exceeding the permissible norm for a drunk driver.

At the time of detention, the violator's alcohol content is determined. Produced exhalation into the breathalyzer provides such an opportunity. The inspector must draw up a protocol and record the established fact. According to the results of a medical examination, the driver may be threatened with the seizure of the vehicle, its temporary confiscation, deprivation of rights.

Permissible blood alcohol level in different countries

The legal blood alcohol limit is defined differently in different countries:

• in Romania, Hungary, Slovakia, the Czech Republic, a driver is still considered sober only at a zero mark;
• Albania allows 0.1;
• in Ukraine, Norway, Sweden, Estonia, Poland, the permissible minimum is 0.2;
• Russia, Moldova - 0.3;
• Lithuania - 0.4;
• Belarus, Turkey, Italy, Spain, Germany, France, Greece consider a driver sober at an indicator of 0.5;
• 0.8 allow UK, Luxembourg, Malta, Ireland.

Video: How much ppm is allowed while driving

For owners of their own cars and those who often spend time on the road, the process of determining the level of intoxication by the patrol services of drivers becomes very relevant. After all, if there is a certain acceptable dose per mille, there is also a maximum permissible level of alcohol, having accepted which the owner of the car will not encounter trouble during the test.

But, before determining the permitted volume of alcohol, you should find out what this concept includes, what designation it has (the ppm sign) and how it is calculated. Having understood the features of this definition, one can easily calculate the permissible level of ethanol, which will not lead to penalties and withdrawal of rights.

Ppm was taken as a hundredth of a percent

What is the physical meaning behind this measurement? It should be clarified that it is much more convenient for a person to operate with certain fractions or parts of any whole unit in various calculations. The simplest and most common such quantities include:

1. Half (or 1/2).
2. Third (or 1/3).
3. Quarter (or 1/4).
4. Tithing (or 1/10).

But sometimes it becomes necessary to use much smaller values. It was due to this need that such calculations as interest arose in due time. Their meaning was hidden in the fact that one percent means 1/100 of the total number. It turned out that in terms of percentages, it is much more convenient to produce various estimated characteristics and compile various reports and charts.

Origin of interest

The ppm designation turned out to be even more successful. Especially when detecting a certain part of a suspension or other component in liquids. It turned out to be much more acceptable for specialists to make calculations, armed not with hundredths, but with a more accurate indicator - thousandths.

Subsequently, when identifying the most accurate volume of ethanol in a liquid (in our case, blood) in laboratory conditions, ppm was taken. Since the percentage turned out to be too large a unit.

Few spelling rules

First of all, you should know that this word is not declined. That is, spellings such as “ppm”, “ppm”, “ppm”, etc. will turn out to be erroneous. Only one spelling of this concept is possible - “promille”. But, you can not bother yourself with additional knowledge of spelling, but find out how ppm is indicated.

By the way, this word refers to two genders - feminine and neuter. Therefore, when writing, you can rely on a couple of options: “two ppm” and “two ppm”. In both cases, the sound will be correct. And in order to find out how the ppm is abbreviated, it should be remembered that this indicator means 1/10 percent, therefore, the abbreviated spelling of ppm is as follows: ‰.

How are percentages and ppm

How to calculate the indicator yourself

Before proceeding to the study of this event, it should be understood that the body of a man and a woman has a big difference. Although the toxic effects of alcohol occur in both cases in the same way, the woman's body is more susceptible to ethanol, therefore, ppm (even if the dose is the same as that of a man) will begin to accumulate faster.

Although the calculation based on thousandths, by its principle, does not differ at all from percentage calculations, it should still be analyzed in more detail. So, the ppm symbol is ‰. It is similar to the percentage symbol (%), but these are different units and do not need to be combined.

When identifying an existing alcohol dose, the following translation of numerical values ​​\u200b\u200band ratios is applied:

1. Since ppm is one thousandth, we calculate: 1 ‰ \u003d 1/1 000 \u003d 0.1% \u003d 0.001.
2. Monofractional liquid (i.e. content without any impurities): 1000‰=100%=1.
3. 400‰=40%=400/1000=0.4.
4. 0.23‰=0.023%=0.00 023.
5. 0‰=0%-0. Zero always means emptiness, nothing.

There is nothing complicated in converting percentage to ppm level and vice versa. It is only necessary to remember the existing basic ratio. In this case, it becomes clear that the difference that exists between the percentage and ppm is purely nominal.

It is noted that the highest peak concentration of ethanol in the blood plasma occurs 30-40 minutes after the dose taken.

Already knowing the value of ppm and applying simple calculations, you can easily get values ​​\u200b\u200bsuch as:

• the level of alcohol used;
• the content of alcohol in the internal organs after a certain period of time;
• the time period required to cleanse the body of ethanol residues.

How does a person's weight affect the time of withdrawal of various types of alcohol from the body

In order for the measured data to be acceptable for use in accurate calculations, a number of certain parameters should be known and taken into account. They are the following:

1. A person's age, body weight and gender.
2. Percentage level of fluid in the body of a person.
3. The amount of alcohol that the subject took initially.

Calculate ppm using a simple example

1. Determine the amount of fluid in the body. For men, this level is calculated from the standard accepted volume of fluid in 70% of the total body weight. So, for a person of 85 kg of weight, this mass fits into 59.5 kg.
2. Calculate the volume of purified ethanol. In milliliters, this is: 500x0.4 \u003d 200 ml. In grams: 200x0.79 (0.79 - the density of purified alcohol) \u003d 158 g. Theoretically, we can say that the volume of pure ethyl alcohol is: 158 g-10% \u003d 142.2 g.
3. In the end, we get that in the consumed dose of alcohol, the mass of pure ethyl alcohol is equal to: 142.2 / 59.5 \u003d 2.39 ‰ (ppm).

Based on the calculation, you can easily calculate what indicator (in ‰) will be in human blood after taking a particular dose of alcohol. This is not difficult to do, but it must be borne in mind that all the results obtained are of a conditional (approximate) nature. After all, the alcohol is drunk gradually, and not in one sitting. And after some time, alcohol begins to gradually leave the body.

When determining ppm, one should also take into account the age / gender of the individual, his state of health, and the emotional component.

How a certain dose of ethanol affects behavioral responses

Narcologists, based on the existing concentration of alcohol, subdivide a person's condition into degrees (or stages) of intoxication. If in the first phase the symptoms of drunkenness are barely noticeable, then the last (3rd) stage can turn into a fatal stage of intoxication for the individual. A severe degree of drunkenness sometimes leads a person to a coma and a subsequent fatal ending.

The lethal level of alcohol-containing products depends on the initial state of health of the individual and her age. Eg:

• for persons of the older age category, as well as those weakened by the disease, it is 3 g of ethanol per 1 kg of body weight;
• for strong and healthy adults, this volume varies between 4-8 g.

Stages of intoxication

If this indicator is exceeded, there is a high risk of death for the intoxicated. As for the percentage of alcohol for each stage, sometimes even experts find it difficult to derive an exact figure. Everything is too individual.

Taking into account that for each degree of drunkenness there is a certain ratio of ppm, the picture looks like this:

• up to 0.3‰: intoxication is not fixed;
• 0.3-0.5‰: weak stage;
• 0.5-1.5‰: initial (light) stage;
• 1.5-2.5‰: medium (moderate) degree;
• 2.5-3.0‰: heavy (strong) stage;
• 3.0-5.0‰: extremely severe stage (there was a risk of coma and subsequent death);
• 5.0-6.0‰: lethal degree.

Promille and driving

Some car owners are very interested in the question of how much it is allowed to “take on the chest” so as not to pay a fine for drunk driving. To identify a safe level, it is worth learning more about how a given level of alcohol affects the reaction and behavior of the driver. The following table will help with this:

How to test yourself for drunkenness

Modern industry allows this possibility. Now every owner of his own vehicle can purchase a household breathalyzer. This device allows you to take the necessary measurements at home. Moreover, the price of this measuring device (alcotester) is quite affordable.

In some European countries, each driver is required by law to have, along with a first-aid kit in the car, a hiking breathalyzer.

But it should be recalled that this device measures the level of ethyl alcohol in the air that the subject exhales (mg / l). Considering that the traffic police officers also test for the degree of drunkenness, armed with a breathalyzer, we can say that the ppm position (despite all the accuracy and convenience) is starting to lose ground. The maximum allowable alcohol limit for a car owner is:

1. In the blood: 0.35 ppm.
2. In exhaled air: 0.16 mg / l.

These norms were introduced in 2013, and to this day they remain. The only change that has taken place since the adoption of such standards was only the tightening of penalties for driving while intoxicated. But, if for some reason the driver does not agree with the final indicators of alcohol testing, he has every right to be tested for drunkenness in a medical laboratory.

This is where blood sampling will be carried out and the dose of ethanol present in the body in ppm will be revealed. What ratio will be in this case between the level of alcohol in the blood and the exhaled air was given in the table above. Moreover, the detection of the level of intoxication in the blood will sometimes be much more reliable and accurate.

Breathalyzers can have a certain degree of error. And it was this nuance that was taken into account when the new rules were introduced in 2013. It is 0.35 ppm. This level is the "green" corridor that allows the driver to stay in the allowed zone of intoxication.

In general, it is legally established that the amount of alcohol cannot exceed 0.3 ppm. But this is very conditional. The same concentration of alcohol can produce completely different effects.

A striking example

For example, an alcoholic with experience with such a concentration of alcohol will be absolutely sober. To reach the mild stage of intoxication, he needs to drink at least a bottle of strong beer, which will equal approximately 0.5 ppm of alcohol in the blood. But all this is conditional. Still depends on the weight and health status of the person.

How much do you need to drink to avoid driving?

Factors influencing can be completely different.

1. A person's weight is a very important indicator. All measuring programs designed to independently determine the concentration of alcohol in the blood take it into account as the main one. But this will be discussed further.
2. Snack. Drinking alcohol with a snack leads to a slightly lower concentration of alcohol in the blood, but it is excreted from the body much longer. Therefore, in order to be able to get behind the wheel faster, it is better not to eat.
3. Human health. If he is sick or tired, has liver disease, then intoxication will be much stronger. You need to consider individually. Alcohol metabolism can either slow down or not change at all if the liver is diseased.

So how much can you drink so that you can drive a car. The answer is very simple - not at all. These indicators are calculated on the fact that each breathalyzer can have some kind of error. Therefore, it can show 0.3 ppm of alcohol in the blood of a person who drank nothing at all. And if he consumes even 0.3 liters of beer, the figure may still be higher. Why take the risk. This allowable limit is not yet a reason to drink while driving, even moderately.

How to measure blood alcohol content at home?

If you have an Android smartphone, then you can use a special application that will allow you to determine the current maximum concentration of alcohol. It's called Alcometer. Thanks to him, you can calculate the per mille of alcohol in the blood. The mechanism of operation is very simple:

1. You drank alcohol.
2. Added its degree and quantity to the application.
3. They drank again - they again brought it into the program.
4. The application shows the current concentration of alcohol in the blood in real time. You do not need to calculate the time of your sobriety yourself. The program will do everything itself. And you can decide whether you can have another one or not.

The app calculates your degree using Widmark's formula. She very accurately depicts intoxication. You will never go wrong with her. However, you also need to be careful with this program. Still, this is not a professional breathalyzer. He will not show the exact amount of ppm alcohol in the blood (0.3 is acceptable). So don't drink and drive.

How to control alcohol consumption?

It's also important not to get so drunk that you think you're sober and want to drive. And this happens quite often. And what should be done for this? Take this program and follow these tips.

1. Drink slowly. If you drink low-alcohol drinks, then you should not drink them in one gulp. As a rule, this leads to a feeling of false sobriety. And a person can drink much more. As a result - a possible sitting behind the wheel and deprivation of rights with a fine. Alcohol is absorbed into the blood for a very long time. The minimum time it takes is half an hour. So keep that indicator in mind.
2. Observe the intervals between doses, especially for strong drinks. No more than one glass of vodka per hour. You can have half a glass in half an hour. Here is how you decide. But the best option is about 30 grams of vodka per hour. In this case, the degree will still grow, but at the same time you will control yourself.
3. Drink less. If you drink often, then it will be harder for you to control yourself, so follow this rule. It is advisable to drink alcohol no more than once a month.

If you follow these tips, then you will never drive drunk, thinking that you are sober, and rely on program indicators. They are accurate enough.

What happens to a person with different levels of ppm in the blood?

In general, the mechanism of the effect of alcohol on the human body is completely different. At the same time, certain patterns can be derived based on the data given in this subsection, used by traffic police officers for the initial examination of a person for intoxication. So how does behavior change as the degree rises?

• Up to 0.1 ppm. Changes in behavior are so minimal that they can only be noticed with the help of special tests. The person is generally sober.
• Up to 0.3 ppm (permissible limit). The person is generally behaving normally and outwardly may be sober. At the same time, alcohol already affects him. The concentration of attention is reduced, even if it is not visible at first glance. It's best not to drive anyway.
• From 0.3 to 0.6 - moderate euphoria. The person is in high spirits, less restrained and talkative. At the same time, the concentration is small enough that the quality of driving has deteriorated significantly. The person may look normal on the outside.
• From 0.6 to 1 - the quality of reasoning is disturbed, concentration worsens even more, the person is very sociable, disinhibited, does not stagger, but can think completely inadequately.
• 1 to 2 ppm blood alcohol. The person behaves completely inappropriately. He is either happy or sad. There may be a staggering gait and loss of articulate speech. At this stage arises However, if a person is an alcoholic or predisposed to alcoholism, then he may not give himself away at this stage.
• From 2 to 3 - the person is in a stupor, his memory is completely lost. If from 1 ppm to two it has a fragmentary character (remembering is generally reduced, but it is), then with such a concentration a person does not remember anything at all. At this stage, he may simply lose consciousness.
• In the blood, 3 ppm of alcohol and above is generally a lethal dose. Rarely does anyone live up to 5 ppm. However, there is still a difference in how long such a concentration was achieved. 4 ppm of alcohol in the blood - almost guaranteed death.

Here is such a detailed classification of intoxication. At concentrations above one ppm, it seems to a person that he is sober, and the likelihood of driving drunk is much higher. Be careful.

Degrees of intoxication

In principle, this classification is somewhat similar to the previous one. But the problem is what each of the degrees implies. So, in some cases, they may include several of the stages discussed above.

• No effect of alcohol. This concentration is up to 0.1 ppm.
• Minor influence of alcohol. This degree occurs at a level of up to 0.3 ppm.
• Light intoxication - from 0.3 to 1 ppm (includes two of the stages considered at once).
• Average intoxication - from 1 to 2 ppm. Most of the people who are called drunk have just such a concentration. What many of us perceive as a severe degree of intoxication is actually moderate.
• Severe intoxication - from 2 ppm. A person can lose consciousness, does not remember anything, in some cases death is possible.

These are the stages of intoxication stand out. At the same time, they are very conditional due to the individual susceptibility to alcohol.

conclusions

We figured out that the blood alcohol content below 0.3 in the traffic police is generally acceptable. But it is important to understand that the concentration of 0.15 ppm and even 0.1 can adversely affect the management of transport. Do not drive, even if you have drunk a glass of wine. Only in this way can you save yourself from unnecessary expenses and selected rights. The content of alcohol in the blood (per mille, by the way, is not the only unit of measurement) is a very responsible issue.

The anti-alcohol campaign launched by the government provides for control over the amount of products containing ethyl alcohol consumed.

In accordance with Law No. 195 on administrative offenses, every citizen is obliged to bear responsibility for drinking alcohol, as well as being drunk in a public place.

The permissible dose of alcohol in the blood should correspond to no more than 0.16 milligrams per liter of exhaled air, which is 0.3 ppm. Otherwise, a person who violates this law will face an administrative fine of up to 5,000 rubles and arrest for up to 15 days.

An indicator up to 0.4 ppm inclusive indicates that there is no effect of ethyl alcohol on the body.

At 0.5-0.6 ppm - the stage of light intoxication. Speech activity, slight euphoria and a sense of peace are observed, which is replaced by a drunk person at 0.3 to 0.5 units with a violation of concentration and vision.

How soon can you get behind the wheel? —

Below 2 ppm is expressed by emotional instability, bouts of anger or excessive joy, slurred speech and impaired coordination of movements.

Severe alcohol poisoning occurs already up to 3 ppm inclusive. Motor activity noticeably changes, stupor alternates with indifference to the environment, loss of consciousness is possible. Breathing is rapid, control over urination and behavior is absent.

The dose of alcohol corresponding to mortal danger is 3, 4 and above units. Damage to the cardiovascular and respiratory systems, unconsciousness, death.

The amount of vodka drunk in ppm

Consumers pay special attention to strong alcohol, the affordable price and long-lasting effect of which is superior to other alcoholic beverages.

After 1 glass in the blood will be about 1 ppm. After 15 minutes, this amount will drop to 0.63 ppm. Half an hour is enough for the blood alcohol level to reach 0.44.

A different picture is observed after the first two glasses or 100 grams of vodka drunk, as indicated by 1.04 units. After 15 minutes of waiting, there is a decrease to 0.67, and after another 30 minutes - to 0.55. It will take about 1.5 hours for the alcohol in the blood to be 0.49. And even 2 hours will not remove ethyl alcohol. The amount of alcohol will reach 0.42.

Many are interested, and if you drink a bottle of vodka, then how much will it show per mille. Self-use of ethyl alcohol in the amount of 0.33 liters, even after 12 hours, will determine an unacceptable amount of 0.38 ppm.

A bottle of 0.5 liter vodka will bring up to 0.68 during the same time. Complete cleansing of the body will take from 15 to 19 hours.

How many ppm will beer show

Not inferior in popularity to strong vodka and intoxicating alcoholic drink. If we talk about how much ppm contains 0.5 liters or a bottle of beer, then its amount will immediately show 1.10 after ingestion. In half an hour it will be reduced by half. It will take about 2 hours and 30 minutes to completely eliminate this dose.

After a liter of beer, the amount of alcohol will be 1.23. Half an hour will reduce the content of ethyl alcohol in the blood to 0.57. After 60 minutes, 0.52 units can be determined.

After 2 hours since the last use, this number will reach 0.46. And even after 3 hours of waiting, the breathalyzer will show 0.34 after beer. Only after 4 hours the blood will be completely cleared.

It is possible to speed up the process of removing ethanol from the body, given that only a tenth of alcohol can be lost on an empty stomach in an hour. A full stomach contributes to the elimination of 50% of the drink.

How to calculate the amount of ppm in the blood

You should not particularly trust and rely on sources such as a table indicating the amount of ppm, especially on the eve of taking a blood test for alcohol. The data will be reliable in a healthy person who has consumed one, and not many types of alcoholic beverages.

It is necessary to take into account the regularity and duration of admission. In order not to be mistaken, how much alcohol you can drink, it is better to calculate its amount yourself.

We determine the permissible rate per mille in the blood according to the developed formula of Eric Widmark, where "c" is the concentration of alcohol, "A" is grams of alcohol, "m" is the weight of a person. The value of "r" in women is 0.6, in men - 0.7 ppm.

C=A / (m × r)

For example, if a man weighing 60 kg drank 100 grams of vodka the day before, then the concentration of alcohol in his blood would be 0.42 ppm.

In order to find out what the acceptable rate of alcohol is suitable for an individual, another equation is used:

A = c × m × r2

Thanks to this formula, it is easy to find out whether it is worth drinking at all. It is worth considering the fact that every hour the body leaves only 0.15 mg from one liter of blood. From 0.27 to 3 it lasts for about a day.

Therefore, if there is no certainty that the calculations are correct, it is better to give up alcohol. It is very difficult to deceive modern breathalyzers.

Celebrations and feasts rarely do without alcoholic beverages. And if you have to work tomorrow or today, it’s good to know the level of alcohol in your blood in order to fearlessly drive your own car. What is ppm, how to determine the exact unit knowing how much is drunk and keeping calm, how and how to measure the amount of residual ethanol - we will talk about this.

What is ppm?

The concept has an exact definition - it is one thousandth, used to indicate the presence of thousandths in one whole. Ppm is used to measure the concentration of alcohol residues in the blood, the air exhaled by a person. The concentration of ethanol is an indicator for motorists and a guide to action: get behind the wheel or use public transport.

To indicate the indicator, the sign ‰ is used, therefore, instead of “one ppm”, they write 1 ‰ and calculate using a simple formula: divide an integer by a thousand. As a percentage, 1‰ is a tenth of a percent, that is, 1% \u003d 0.1‰.

How to calculate ppm yourself?

To convert percentages to ‰, it is enough to divide the whole number in % ratio by 100, because 1 ‰ is a tenth of a percent! That is, a fortress of 40% \u003d 0.4‰. And, of course, the same is done in reverse: 0.3‰ * 100 = 30%. So wine at 12% will give a ppm of 0.12, and so on.

An indicator equal to 0.2 ‰ will indicate the number of grams of alcohol present in a liter of fluid of the entire human body. The natural "endogenous" standard for any individual is the norm of 0.3 ‰ - this indicator is always there, regardless of the use of alcoholic beverages, and it is he who is taken as the basis of "zero" ‰.

When drinking alcohol, the highest concentration of alcohol in the blood is reached in about half an hour. Here you can quickly calculate the content level ‰. In addition to the fact that the indicator will determine the ability to drive a car, knowing the rate of withdrawal of alcohol from the body will help to clearly understand the period of time required for complete sobering up. But this is precisely what is important for drivers, since in the Russian Federation there is no “permissible level” of ethanol concentration, despite the adopted legislative acts. To get behind the wheel after drinking even a glass of wine - incur all sorts of penalties from the representatives of the traffic police. Well, the consequences of drunk driving are known to all car owners.

Advice! Practically, it was found that approximately 0.15 ‰ is excreted from the body of a man with a healthy liver per hour. The female body removes ethanol residues much more slowly, the indicator varies between 0.8-0.11‰.

Independent determination of the degree of intoxication and an example of calculating ppm

1. A 23-year-old man weighing 77 kg drank 250 ml of vodka with an alcohol content of 40%.
2. The ratio of water in the body is considered to be 70%, that is, the volume is calculated 77 kg * 70% = 53.9 kg.
3. You can determine the ethanol content in the amount drunk by the formula (0.79 g / ml - the density of ethyl alcohol): a unit of drunk * density. In our case, 250 ml * 40% \u003d 100 ml of pure alcohol, which must also be multiplied by the density (0.79), the total will be 79 g. pure alcohol.
4. And now the calculation of ppm: 79 gr. alcohol divided by 53.9 (total volume of fluid in the body), the total amount is 1.46‰.

Thus, in the body of a healthy man, the alcohol content after drinking a glass of vodka is equal to an indicator that significantly exceeds the permissible 0.3 ‰, at which one can drive. Even taking the value of 10% of the error as an additional factor, the value remains unacceptable. According to the table of the degree of intoxication:

1. 0.3 ‰ - natural "zero" level of alcohol content;
2. 0,-0.5‰ - insignificant effect of alcohol on behavioral responses;
3. 0.5-1.5‰ - a state of mild intoxication;
4. 1.5-2.5‰ - the average degree of intoxication;
5. 2.5-3.0‰ - a heavily drunk person;
6. From 3.0‰ - a lethal dose of alcohol.

It can be revealed that the hypothetical man used for the example is in a mild degree of intoxication. It will return to normal (with a withdrawal of 0.15‰ per hour) in about 6-9 hours.

Knowing how to convert ppm to grams, calculate a certain level of residual alcohol content in the blood, you can always realize the degree of your condition. Recall that in order to determine how many ‰ are in a gram, it is enough to divide 1 gram by 100. That is, 1 gr. pure alcohol will show 0.01‰. The Code of Administrative Offenses of the Russian Federation warns about the norms for the presence of pure ethyl alcohol in the blood. The indicator is 0.16 mg per liter of air exhaled by an individual. If you make a simple calculation in a ratio of 1:2200 (air: ratio to liquid), you get the figure 0.352 g / l of blood - the popularly accepted indicator is “0.3‰”. From here, calculate how much you can drink before you get behind the wheel.