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

In agriculture applications, monitoring the quality of the soil is extremely important for the healthy growth of crops. The pH level is an excellent guide as to which plants may thrive in a particular terrain, as well as indicating which conditioners and fertilizers to use. This combination test kit allows you to test not only for pH, but for nitrogen, phosphorous and potassium as well, which are all important for the quality of soil.

Product code: HI3895

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

DiST series feature a rugged and ergonomically enhanced casing that fits comfortably in your hand and a larger LCD which makes it easier to read at any angle. With the latest innovation of a non-clogging fiber junction, the new DiST meters last much longer.

Product code: HI98300

Range: 0-1999 ppm (mg/L) by 1 ppm (mg/L)

pHep series feature a rugged and ergonomically enhanced casing that fits comfortably in your hand and a larger LCD which makes it easier to read at any angle. With the latest innovation of a non-clogging fiber junction, the new pHep meters last much longer.

Product code: HI98107

Range: 0.0 to 14.0 pH by 0.1

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

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 pH. Calibration is easy and completely automatic.

Product code: HI981408

Range: 0.0 to 14.0 pH by 0.1

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

Hanna Instruments is the market leader in agriculture meters and probes. Humboldt Wholesale has a complete line of Hanna products for the indoor and outdoor gardener. Hanna makes everything, from simple pH pens to industrial Lux, ORP, TDS and EC meters.