£56.57

Apera Instruments Apera AI209 pH Pocket Tester - 0-14.0 Range, 0.1 Accuracy

Regular Kit, AI209

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About as cheap as it gets. The only time it was cheaper was 2 months ago.

£57 today · all-time low £56 (Jul 2026) · usually £56

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Price History & Forecast

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Last 91 days · 91 data points

Historical
Generating forecast…
£59.63 £55.37 £56.30 £57.23 £58.16 £59.09 £60.02 04 July 2026 26 July 2026 18 August 2026 09 September 2026 02 October 2026

Price Distribution

Price distribution over 91 days • 5 price levels

Days at Price
Current Price
65 days · current 1 day · current 5 days 19 days 1 day 0 16 33 49 65 £56 £57 £58 £59 £60 Days at Price

Price Analysis

Most common price: £56 (65 days, 71.4%)

Price range: £56 - £60

Price levels: 5 different prices over 91 days

Description

The Apera Instruments AI209 pH Pocket Tester is a waterproof pH meter designed for home brewing, wine making, and aquarium testing. This complete kit includes calibration solutions, AAA batteries, and a carrying case for portable convenience. The AI209 features automatic temperature compensation (ATC) that maintains accuracy across temperatures from 0 to 50.0C, ensuring reliable results in varying conditions. Auto calibration with buffer recognition simplifies setup, whilst auto stable-value detection removes guesswork from taking measurements - the metre recognises when readings stabilise and notifies you. The ultra-clear 180-degree viewing angle display simultaneously shows pH and temperature values, along with calibration status and reading stability indicators. With 0.1 accuracy across a 0-14.0 pH range, this tester delivers precision for professional and hobbyist applications. Powered by AAA batteries, the AI209 offers up to 2000 hours of continuous operation, making it reliable for frequent use.

Key Features

The AI209 pocket tester delivers 0.1 accuracy across a 0-14.0 pH range for precise measurements in brewing, wine making, and aquarium applications.

Auto temperature compensation (ATC) adjusts readings across 0-50.0C to ensure consistent accuracy regardless of environmental conditions.

Auto calibration with buffer recognition and auto stable-value detection eliminate manual guessing and improve measurement consistency.

The waterproof design with 180-degree viewing angle display simultaneously shows pH, temperature, calibration status, and reading stability.

Complete kit includes ready-to-use calibration solutions, AAA batteries, lanyard, and portable carrying case for transport and storage.

Apera AI209 achieves up to 2000 hours of continuous battery operation, providing extended reliability for regular testing needs.

Product Specifications

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