The Apax Lab TDS Meter is designed to measure mineral concentration in brewing water, helping you monitor Total Dissolved Solids (TDS) during coffee preparation. By converting conductivity into a PPM reading, it supports more consistent brewing when using custom water or mineral concentrates. Compact and simple to use, it features fast readings, a one-button interface and a hold function for easy recording. Ideal for checking dilution levels and refining water recipes for better flavour and extraction consistency. Apax Lab TDS Meter Features Fast TDS Readings – Measures Total Dissolved Solids to help analyse mineral concentration and verify water recipes. Designed for Brew Water – Useful for monitoring mineral concentration when using custom water or concentrates. Simple One-Button Operation – Straightforward interface makes daily testing fast and easy. Hold Function – Temporarily saves readings for easier comparison and recording. Automatic Range Scaling – Adjusts measurement sensitivity depending on concentration level for clearer readings. Compact Digital Format – Lightweight pen-style design fits easily into a brewing setup or travel kit. This Product Includes 1 x Apax Lab TDS Meter Specifications Measurement Type Total Dissolved Solids (TDS) Measurement Range 0–9990ppm Resolution 1ppm (0–999ppm) 10ppm (1000–9990ppm) Accuracy ±2% Calibration Factory calibrated Battery 2 x LR44 Batteries (0% HgPb) Dimensions (W) 30mm x (D) 20mm x (H) 155mm Weight 40g