Quote:
Originally Posted by JFP in PA
It is not unusual for different labs to generate different results. It all has to do with how the tests are run (methodology), what type of equipment is used and how often said equipment is calibrated and tested.
|
+1. ^^^^ What JFP said.
I would suggest only comparing tests from a single lab as whatever errors or biases are in the data are likely to consistent from test to test.