TEST PAPER PH 9.0-12.0 15' , Pack of 5.

Details

Hydrion Ph 9.0-12.0 Paper Refills 5Rolls/Pk^ Short range ph (9.0-12.0) paper showing a sharp color change for each half ph unit. 15 foot rolls of ph paper with 2 color charts. For standard single and double roll dispensers. Packed in heat sealed aluminum foil and tightly secured in a plastic case.