Test Paper Ph 9.0-12.0 15', Case Of 50

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.