r-0871 REFILL test problem

[bullet20]

ordered refill's for dpd fas kit and wife used the 2 oz. bottle to do test and came out with FC- 23.5 and CC-2
so i retested using the .75OZ bottle that came with kit 6 hours later and had FC-19.5 CC-1
should i continue using .75 oz bottle? thats what i started with.

 

[Richard320]

With that CC level to start, and the retest 6 hours later, I'm not sure there's a discrepancy. The only way to know for sure is to run two tests back-to-back (or side by side) and see if they are within a drop of each other.

 

[JamesW]

You also want to be sure to get the water level in the tube as close to the same exact level each time. Just being a little bit off can make a measurable difference.