AF35 Premium / Pro X-5 breathalyzer - Correctness of indications

Hello, I have an AlcoFind AF-35 Premium breathalyzer. (Apparently the same as AlcoFind Pro X-5)
The breathalyzer supposedly shows very accurate measurements in many tests - currently it has some 80 measurements taken since calibration and I am not sure if it indicates well.
I drank beer (78kg male) 0.3L 5% for about 30 minutes. After waiting 20 minutes, I did the measurement and the result was 0.00.
The second person did the test (55 kg woman) and she jumped 0.18 and with this result I would agree, but with this 0.00 I look suspicious.
The question is whether it is possible, whether it can be influenced or sent for calibration.
What is the durability of these electrochemical (supposedly platinum) sensors - are they easy to damage if, for example, we blow in alcohol 10 minutes after consumption or are they rather durable?

Each person has a different metabolism, etc., these measurements must be approached with a distance, there is only one truth:
You've been drinking- don't drive!

LiutenetMaria wrote:

You've been drinking- don't drive!

It's obvious, but it's worth checking yourself on the next day.

I used to test myself with such breathalyzers even for 600 PLN, and I do not believe in their indications ..

I have had the Pro-X-5 + for over a year. The most reliable indications - compared with others. Repeatability is also right.
Have you been drinking You have to come back sometime. If everyone after drinking, before setting off, used a calibrated breathalyzer, there would not be so many cases of drunk drivers bringing death and disability on the road.
You may not believe, I do not intend to convert anyone