The HI981504 bas been designed for continuous and simultaneous monitoring of pH, TDs, and temperature. Simply install the meter above the sample to be tested, plug the instrument to the mains and immerse the probes. pH, TDS, and temperature measurements will be simultaneously displayed on the three backlit LCDs.

Range: pH 0.0 to 14.0 by 0.1

TDS: 0 to 1999 ppm by 10 ppm

Temperature -10.0 to 60.00 °C by 0.1 °C

Aquadip provides simple and fast measurements for EC/TDS and temperature in places with high relative humidity. Hanna Instruments offers convenience & accuracy in this tester. With only two operation buttons, Aquadip allows immediate and precise response in a concise design. This is a rugged unit that can be used again and again. The probe is even durable enough to be used as a stirrer.

Product code: HI983311

Range: 0 to 3999 μS/cm by 1 μS/cm - 0 to 2000 ppm by 1 ppm

The Combo HI 991404 and HI 991405 series meters from HANNA Instruments are designed for continuous, high accuracy pH, EC/TDS and temperature measurements. These microprocessor indicators continuously monitor the three most important nutrient parameters in hydroponics, greenhouses and horticultural applications with a single instrument. These indicators feature a large, dual-level, backlit LCD to give you instantaneous readings of pH, EC or TDS and temperature, even from a distance.

Wall Mountable and powered using AC 120V

These meters have the same specs as the waterproof pens, but have been specifically designed to address the needs of operators in hydroponics, greenhouses and nurseries. The meter employs the latest in custom-built application specific microchips together with a purpose built rugged housing to measure EC/TDS. Calibration is easy and completely automatic.

Product code: HI981410

Range: 0.00 to 10.00 ms/cm by 0.01 ms/cm

The HI98129 Combo Waterproof tester offers high accuracy pH, EC/TDS and temperature measurements in a single tester! No more switching between meters for your routine measurements. The waterproof Combo has a large easy-to-read, dual level LCD and automatic shut-off. pH and EC/TDS readings are automatically compensated for the effects of temperature (ATC).

Product code: HI98129

Range: pH 0.00 to 14.00 pH by 0.01 pH

EC: 0 to 3999 μS/cm TDS 0 to 2000 ppm by 1 ppm

Replacement pH probe: HI73127

Conductivity and Total Dissolved Solids measurements have never been easier. DiST's ease-of-use, in combination with its affordability, make it the standard in EC and TDS measurement.

This pen is waterproof and has a replaceable probe.

Data Ranges and product codes:

HI98311: EC 0 to 3999 μS/cm --- TDS 0 to 2000 ppm by 1ppm

HI98312: EC 0.00 to 20.00 mS/cm --- TDS 0.00 to 10.00 ppt