ph /tds /ec pen testing

pH, TDS and EC Water Testing Pens

Monitor water parameters with pen-style testing options for your aquarium maintenance routine. Select the tester suited to the measurement you need and check the selected model's functions before ordering.

• pH: measures how acidic or alkaline the water is
• TDS: estimates total dissolved solids, not a direct measurement of waste or specific pollutants
• EC: measures electrical conductivity, not stray voltage or electrical faults
• Temperature: check whether your selected model includes this function

Follow the manufacturer's calibration, cleaning and storage instructions for reliable readings. These testers do not replace dedicated ammonia, nitrite or nitrate tests. An EC pen must not be used to determine whether a heater, pump or light is electrically safe.