pH Meters (7)

Bluelab PH Pen A hardy, compact pH and temperature pen. Teamed with our Bluelab ppm or EC Pen, you have a handy, convenient and accurate system for ensuring optimum plant...

pH Test Kit (Wide Spectrum) Measures 3-10 pH. The Hydroponic pH test kit is good for 150 tests. At the rate of 3 tests per week it will last one...

Bluelab pH Probe Dependable double-junction pH probe technology that's built to last Double-junction probe reduces reference contamination, extending longevity Fully waterproof - not just water resistant  BNC connector allows use...

Accurate, Reliable pH Testing for Hydroponics, Pools, Aquariums, and More The PH-80 pH HydroTester by HM Digital is a cost-effective yet highly precise tool designed to maintain optimal water quality....

Alfred Digital pH / Temperature Water Resistant Tester The pH-1 is an economically priced, reliable pH meter that is ideal for testing applications such as hydroponics & gardening, pools &...

Nutradip Growboss NEW and Improved Features Include: PPM Probe is now manufactured and assembled in Canada. Standardized epoxy grade increased = increased water proofing capabilities. New robust power supply provides...

HANNA HI 98107 PHEP PH / T° TESTER pHep pH Tester• Waterproof• Extractable cloth junction to extend pH electrode life• Built in temperature sensor for Automatic Temperature Compensated measurements• Automatic...