- Joined
- Apr 25, 2019
- Messages
- 32
- Reaction score
- 14
Just wondering with the checker, when you add the 1 ml of reagent to the vile should the vile have 9ml of test water in it the second time to bring the total volume up to 10 ml or should you add the reagent to 10ml of test water, having the sample go over the white line?


