Hanna Instruments

Scientific Equipment

Safety Data Sheets

SDS search & quick download

Free Delivery

Most of mainland GB for orders over £50. Other charges may apply - see more

Hanna Care

We take the long view, looking after existing customers as much as delighting new ones!

Certificates of Analysis

Download a copy of the certificate of analysis for your solution

PRIMO3 Pocket TDS/Temperature Tester (0 to 1999ppm)

PRIMO3 Pocket TDS/Temperature Tester (0 to 1999ppm)

PRIMO3 Pocket TDS/Temperature Tester (0 to 1999ppm)

PRIMO3 Pocket TDS/Temperature Tester (0 to 1999ppm)

Complete with EC probe
1 year manufacturer warranty
In Stock
£85.30 (exc. VAT) £102.36 (inc. VAT)

The pocket-sized Total Dissolved Solids (TDS) tester measures both TDS and temperature using a remote probe fitted with a 1m cable.

Primo TDS tester is a rugged and reliable tester that offers quick and accurate readings, Primo is used for testing total dissolved solids in applications such as hydroponics, drinking water, reverse osmosis systems, and aquariums.

PRIMO3 Pocket TDS/Temperature Tester (0 to 1999ppm) information

Hanna's extended description

The pocket sized PRIMO3 tester provides a fast and dependable way to measure the total dissolved solids in water samples.

The PRIMO3 is ideally suited to the rigorous demands of water quality professionals who will appreciate the practicality of the clear, easy to read LCD for demonstrating the before and after results of conditioning and filtration systems.

Temperature is compensated automatically to ensure the readings are consistent to the standard or reference temperature.

Operating and routine maintenance has never been easier. Primo 3 uses a single button at the top of the meter. Press it once and the meter is powered and ready for use. Press and hold the button for a few seconds and Primo 3 automatically enters calibration mode. Simply open a sachet of calibration solution, dip the probe in, and within seconds the meter recognises the calibration solution and calibrates itself!

Ideal for

  • Water quality testing

Main benefits

  • Robust pocket-sized tester
  • Fast and dependable

Key features

  • 1m cable probe connection
  • Automatic calibration
  • Automatic Temperature Compensation
  • Easy to read LCD

Battery powered – Allows use away from a power source. Batteries are included with all battery operated products.

Water Resistant – Can withstand temporary exposure to water, but should not be submerged or washed under running water.


Specifications list


Range 0 to 1999 ppm (mg/L); 0.0 to 60.0°C
Resolution 1 ppm (mg/L); 0.1°C
Accuracy ±2% F.S.; ±0.5°C
Calibration Solution HI 70032P
Calibration automatic, at 1382 ppm
Temperature Compensation Automatic, 0 to 60°C (32 to 140°F), ß=2%/°C
Battery Type / Life 2 x 1.5V / approx. 200 hours; auto-off after 5 minutes of non-use
Environment 0 to 50°C (32 to 122°F); RH max 95%
Dimensions 66 x 50 x 25 mm (2.6 x 2.0 x 1.0") - meter only
Weight 115 g (4.1 oz.)

Questions & Answers

Got a question to ask? Use this form to submit your question.
Question will be displayed after moderation.
Name* Product Question*
No questions yet?
Don 't be shy, be the first to ask.