pH pen for standard test tubes 16x50 mm or larger. Comes with ATC, Range: 0 - 14, Accuracy: +/- 0.1, Designed for simple one-hand operation. Automatically calibrates to pH 4, 7 and 10 buffers, The case is IP65 waterproof, Probe: 120 mm Ă— 12 mm, Dimensions: 245 Ă— 35 Ă— 22 mm
VWR* Conductivity Meter Atc Hydroponics The P772 is a wide-range, pocket-sized conductivity meter perfect for use in field environments. With 10 uS/cm resolution and +/-2% FS accuracy, ATC adjusts for changes in conductivity due to temperature.
conductivity tester, handheld device provides a qualitative visual indicator of the conductivity of different solutions, acids or salts, Two brass probes can be touched to a solid substance, or immersed in a liquid, to show conductivity on green LEDs