meters for pH & TDS/EC testing

The Accurate pH 8 is a professional pH and Moisture Meter with 12” Probe. Now You can check soil pH at multiple depths!! The probe is 12”...

With this direct soil pre-amplified pH and temperature probe, you can test both the pH of soil directly or after preparation of a diluted...

Soil Test™ Direct Soil EC Tester - HI98331 The Soil Test™ Direct Soil EC Tester - HI98331 is a rugged and reliable pocket-sized tester...

Hanna 1413 μS/cm Solution, 230 ml   HI7031-023 is a GroLine 1,413 µS/cm conductivity standard that is prepared against a NIST...

  HI 993310 Direct Soil Activity and Solution Conductivity Measurement Kit       Supplied with two probes Automatic...

GroLine Hydroponic Waterproof pH/EC/TDS/Temperature Portable Meter - HI9814 The HI9814 is a slim, lightweight, and waterproof portable meter that...

Accurate pH measurements in a few seconds, from a single drop.* Water pH varies in different environments, and a slight change can often have a major...

Horiba LAQUAtwin B-731 potassium ion meter Potassium Ion Only compact meter for a quick and reliable measurement of potassium ion at the scene...

Horiba LaquaTwin B-741, Nitrate meter for crops $594.00 100-9,900 ppm measurement range for plant sap analysis The compact LAQUAtwin B-74X series...

Horiba LaquaTwin B-751 Calcium Ion meter For analaysis of nutrient solutions and plant sap. The compact LAQUAtwin B-751 is the only meter for quick...

general Hydroponics brand pH 4 and pH 7 calibration solution. 8 ounces of each