I tested my calcium with the TF-100 kit, and they say to multiply the drop counts by 25.
First test 475. Dropped pool about 8-10 inches at a time and refilled - 6 times with fresh water.
Should have but don't have home test results for that.
Pool store said calcium at 140.
Added 10 lbs calcium chloride
Home test said 525 on June 29, 2016.
July 1, 2016, two pool stores say 200 - 225. And I notice they are multiplying drop counts by 10. Both are using Taylor reagents 10, 11, and 12. (I'm assuming there is only an 11L, that is used for the calcium test and if not, that could be a big variable).
Home test July 3, 2016, calcium at 425.
Can anyone help me understand why the variance in the multiplier and any other factors I may be missing?