G
Guest
Since the precision of this test is +/- 10 ppm with a 25 ml sample then if you are getting a difference of 1 drop you are in spec and the test result is the same. Unless you are testing a known standard you have no way of knowing which test (TF100 or Taylor) is the more precise one.stevet1 said:ALK- I must say that the dropper tip on my TF-100 gives drops that are slightly too big, I always read 10 points lower (1 drop less) compared to using the original taylor bottles/tips.
Many people do not understand what the precision of a test means and expect different methods of testing to produce exactly the same results. If the test results are within the proper range, such as your example above, then the test is considered 'accurate' (the results are reproducible within the specified range).