8100 Plus pH temperature meter / 8100 Plus kit


8100 Plus pH and temperature meter  - and optional Kit package

  • robust waterproof case gives IP66/67 protection
  • manual / automatic temperature compensation
  • simple pH re-calibration
  • 2 year guarantee
  • optional kit price includes electrode and probe


More details

in stock

£100.00 ex VAT

  £120.00 inc VAT

The 8100 Plus pH meter is a three-in-one instrument that features a large easy to read, LCD display that indicates pH over the range of -2 to 16 pH with a resolution of 0.01 pH, mV over the range of -1000 to 1000 mV and temperature over the range of -39.9 to 149.9 °C with a resolution of 0.1 °C. The LCD display features both low battery indication and an user selectable backlight.

The pH readings are either manually or automatically temperature compensated over the operating range of 0 to 80°C. To automatically compensate, it is necessary to utilise a thermistor temperature probe. Each unit incorporates an auto-power off facility that automatically turns the instrument off after ten minutes, maximising battery life.

The 8100 Plus has an integrated rubber seal to ensure complete water resistance and helps to reduce the possibility of damage in harsh environments.

At the touch of a button, the instrument will automatically re-calibrate (2-point autocal) itself when used in conjunction with pH buffer solutions. For pH buffer solutions, click here.

Each unit incorporates an easy to use BNC connector and waterproof Lumberg screw-locking type connector, allowing a wide range of interchangeable thermistor probes to be used. The 8100 Plus pH price excludes electrode & probe. 

In order to calibrate this 8100 Plus meter before use, pH7 buffer solution or capsules must be purchased alongside this instrument, plus either a pH4 or pH10 buffer solution or capsules depending on your application. Solutions not required for kit option as supplied with kit. 

To add recommended probes and other accessories select your choices from the 'Add Accessories' dropdowns, then click 'Buy Now! button.

The 8100 Plus pH meter is available as a meter only or as a complete kit which includes:

  • 8100 Plus pH meter (225-085)
  • temperature probe (170-100)
  • general purpose pH electrode (823-501)
  • 4.01 pH buffer solution (816-050)
  • 7.00 pH buffer solution (816-051)
  • carrying case (830-080) 


range:pH: -2 to 16 pH, mV: ± 1000mV, temperature: -39.9 to 149.9°C
resolution:pH: 0.01pH, mV: 1mV, temperature: 0.1°C
accuracy:pH: ±0.02pH, mV: ±1mV, temperature: ±0.4°C (-9.9 to 69.9°C)
battery:3 x 1.5 volt AAA
battery life:maximum 5 years - 2500 hours
sensor type:combination electrode / thermistor
display: 12mm LCD
dimensions:32 x 71 x 141mm
weight:230 grams
case material: ABS plastic
country of manufacture: United Kingdom
guarantee: two years
water/dust resistance: IP66/67 protection
measurement scale: pH mV and temperature

Biomaster protection

Biomaster antimicrobial technology is incorporated in the majority of ETI products during the manufacturing process, reducing the risk of bacterial cross contamination. As well as being harmful to health, outbreaks of food poisoning can damage brands, and the reputation of stores, food producers and restaurants. This protection lasts for the useful lifetime of the product.

The risk of food-borne contamination is widespread, existing in restaurants, bars, hotels, supermarkets, hospitals, schools, aircraft, cruise ships and your home. Anywhere where food is made, prepared or eaten.

Biomaster treated products have been proven to reduce the growth of food borne bacteria such as E.Coli, Salmonella and Campylobacter by up to 99.99%, so by choosing an ETI product with Biomaster additive, your product is protected 24 hours a day, every day.

What is Biomaster?

Biomaster is the leading brand of Antimicrobial Technology providing safe, effective and long-lasting protection against the growth of harmful bacteria, making any surface cleaner and more hygienic for its entire lifetime.

Proven to quickly reduce bacteria by up to 99.99% Biomaster is an effective means of reducing the growth of MRSA, E.Coli, Salmonella Campylobacter and Legionella and over 50 other species.

Incorporated into the body material of your ETI product, Biomaster becomes an integral part of it, providing durable, lifelong protection against the threat of cross contamination. 

How does it work?

The active ingredient in Biomaster is silver. Silver has been used in its pure form for many centuries to prevent the growth of bacteria.

Incredibly durable, long lasting and highly active, when Biomaster is added during manufacture it is dispersed throughout the product casing, will not wash off and will last for its entire lifetime. Biomaster provides antimicrobial protection without allowing bacteria to develop resistance.


Biomaster has 3 different modes of action:





8100 Plus ph meter manual

ETI 8100 Plus pH meter instruction manual

Download (660.99k)

pH Care Guide

Handy guide for caring for your pH meter or tester

Download (917.69k)

225-085 C of C

225-085 8100 Plus pH Meter certificate of conformity

Download (237.27k)

860-820 C of C

860-820 8100 pH Meter Kit certificate of conformity

Download (229.25k)

pH Electrode Care

Guide to caring for your pH electrodes

Download (158.44k)


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