Apera Instruments PHB-3 Economic Waterproof pH Pocket Tester, ±0.1 pH Accuracy, 0-14.0 pH Range industrial scanning range is large

scanning range is large

Tomorotec Ultra Thin Cell Phone Ring Stand Magnetic Car Mount Hook Matte Center Compatible for iPhone X 8 7 Plus 6S 6 5s 5 SE

Also great for removing weld scale

NexStar 8 SE

Working Pressure: 0-1MPa

Apera Instruments PHB-3 Economic Waterproof pH Pocket Tester, ±0.1 pH Accuracy, 0-14.0 pH Range industrial scanning range is largeApera Instruments PHB 3 Economic Waterproof pH Pocket Tester, 0. 1 pH Accuracy, 0 14. 0 pH Range Apera Instruments PHB 3 Pocket pH Tester is the most economic choice of a reliable pocket pH tester for your regular water solution's pH measurement, including hydroponics, aquaculture, pools& spas, education, tap drinking water, etc. Easy single button operation for 1 point Auto Calibration (pH 7. 0) and 0 to 50C Auto Temperature Compensation (ATC); 0. 1