pH / EC / TDS Meters & Solutions

The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable cond...

The Sure Test® Commercial Multi-Meter allows for easy measurement of pH and conductivity (EC or TDS) and temperature (ºF or ºC) in one versatile un...

The Sure Test® Commercial Multi-Meter DO Probe allows for easy measurement of dissolved oxygen. For use with the Sure Test® Commercial Mult...

The Sure Test® Commercial Lab Meter offers the ultimate in precision and accuracy. Dependably measure pH and conductivity (EC or TDS or Sal...

Track, plot, log and create PDFs or Excel reports with the Sure Test® Temperature and Relative Humidity Data-Logger. Easy-to-use—plug and p...

HydroMaster Digital tester makes monitoring water easier than ever by reading the levels that matter most and providing accurate readings t...

The COM-80 is an economically priced, reliable EC/TDS meter that is ideal for testing applications such as hydroponics, gardening, pools, s...

Measures pH and temperature. Auto-ranging three point calibration with digital fine tuning. pH buffer 4 solution is in a sponge embedded in...

Resolution: pH 0.1 pH, 0.00–14.0 pH. Accurate to +/-0.1 pH. Hold button and auto shut-off. Automatic calibration: Auto-ranging to 4, 7 or 1...

Ideal for commercial use. Includes a carrying case with belt clip. Highly efficient and accurate due to its advanced microprocessor technol...

The COM-300 is an advanced waterproof combo meter with superior accuracy. The meter measures four parameters: pH, electrical conductivity (...

Soil Testing Simplified! Soil Savvy™ is a teady-to-use professional-grade soil test kit available to the general public that provides an ea...

Alchemist pH Down is comprised of very pure, food-safe ingredients. This unique buffer is non-toxic, non-corrosive and non-hazardous, makin...

Alchemist pH Up is comprised of very pure, food-safe ingredients. This unique buffer is non-toxic, non-caustic and non-hazardous, making it...

General Hydroponics pH Test Kits make pH testing easy. Simply fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator ...

General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial.

This Base solution is formulated using potassium hydroxide and potassium carbonate. Add a little at a time when your nutrient pH is too low...

The acid formulation uses food-grade phosphoric acid to lower the pH to the proper level.

General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS mete...

Keep your nutrient solution in the sweet spot with Emerald Harvest® pH Up. A pH reading below 5.5 is considered too acidic for mos...

Keep your nutrient solution in the sweet spot with Emerald Harvest® pH Down. A pH reading above 6.5 is considered too alkaline for most hyd...

The most common reasons for pH meter error is dry storage of the electrode and electrode contamination. These cause loss of accuracy, reduc...

CYCO pH Down lowers the total pH value of the made nutrient solution.

CYCO pH Up raises the total pH value of the made nutrient solution.