This is a replacement Taylor Calcium Buffer #10 reagent. This replacement reagent has a bottle size of 2 ounce.
Used to test Calcium Hardness test with Taylor Kits.
Genuine Taylor Replacement Reagent
Reagent Size: 2 Ounces
Our 15 yr old pool likes to eat calcium, so we test every month. Each test uses 20 drops & we go thru reagents fast. This is a good price.