The time between one test and the other allows the decantation of particles in the oil sample... so when taking oil with the dropper some time later, the second sample will have fewer particles in suspension... even within the same dropper, yes it takes a long time, the particles settle down, giving differences between the bottom and the top... the ideal would be with the same dropper to put a drop in each meter, and alternate one and one until both are filled... Then... the light that comes on in the first is slightly to the right of center, and in the second slightly to the left... if the measurement is in the center, a slight deviation in one meter will cause it to opt out. the light to the left or to the right... Like any instrument, its error is equal to its minimum appreciation, which is equal to a mark, that is, the distance between light and light...
you should repeat the measurement three or four times on the *same* device. They may provide different results with each measurement. That is not in itself wrong or bad. If the measurements with the first device are 6/6/6/5 and with the second are 5/6/6/6, it's acceptable. Second, you can not be certain that the two oil samples are identical. Ideally you want to test both devices with the same oil sample, not different samples from the same oil. Obviously, that is quite difficult.
The test results seem close enough to me. There is always a % of error for all tests, so a little difference is acceptable. Both results showed the oil was still good to use, that’s good enough for the purpose of the tester. If the testers only had “good” and “bad” oil indicator lights, then both testers will have the exact results, “good” oil.
Even though you took both samples from the same vial, they will be different. Stratification plays a roll here. If you took the oil sample from first tester then used it in 2nd tester that would be the same sample. These testers also may not be calibrated the same. In our $23,000 oil analysis units, taking a sample from a vial like you did we would have a slight difference, "stratification" of the sample in the vial.
I am glad you showed us the accuracy of this device
The time between one test and the other allows the decantation of particles in the oil sample... so when taking oil with the dropper some time later, the second sample will have fewer particles in suspension... even within the same dropper, yes it takes a long time, the particles settle down, giving differences between the bottom and the top... the ideal would be with the same dropper to put a drop in each meter, and alternate one and one until both are filled...
Then... the light that comes on in the first is slightly to the right of center, and in the second slightly to the left... if the measurement is in the center, a slight deviation in one meter will cause it to opt out. the light to the left or to the right...
Like any instrument, its error is equal to its minimum appreciation, which is equal to a mark, that is, the distance between light and light...
How many retests did you do after this to confirm your finding?
you should repeat the measurement three or four times on the *same* device. They may provide different results with each measurement. That is not in itself wrong or bad. If the measurements with the first device are 6/6/6/5 and with the second are 5/6/6/6, it's acceptable. Second, you can not be certain that the two oil samples are identical. Ideally you want to test both devices with the same oil sample, not different samples from the same oil. Obviously, that is quite difficult.
Yes
Seems to be pretty much the same ballpark. Now if it one 2 points off then there’s something way off but I’d say it does the job.
The test results are not same for same sample oil.
The test results seem close enough to me. There is always a % of error for all tests, so a little difference is acceptable. Both results showed the oil was still good to use, that’s good enough for the purpose of the tester. If the testers only had “good” and “bad” oil indicator lights, then both testers will have the exact results, “good” oil.
Excelente observação. Testei em vários tipos de óleo, e realmente os resultados são coerentes.
It can´t say 5.5?
Even though you took both samples from the same vial, they will be different. Stratification plays a roll here. If you took the oil sample from first tester then used it in 2nd tester that would be the same sample. These testers also may not be calibrated the same. In our $23,000 oil analysis units, taking a sample from a vial like you did we would have a slight difference, "stratification" of the sample in the vial.
What kind of oil samples do you get at your lab?
What synthetic oil was it and is this the first time you used it. Still impressive given he last change was 14 months ago.
Your added oil less drops second one litle more
Thanks and regards.