Peak Instruments Mini And Ultra-Thin Pocket pH Meter Model P-310 With Size 180x50x20mm, A mini or ultra-thin pocket pH meter is a small and portable device used to measure the pH level of a liquid or a semi-solid sample. It is a compact and handy tool that can easily fit in your pocket, making it convenient to carry around for on-the-go pH testing.Mini and ultra-thin pocket pH meters typically have a digital display that shows the pH level of the sample being tested. They also come with a probe that is immersed in the sample to measure its pH level. The probe contains a glass electrode that reacts with the sample and generates an electrical potential, which is then measured and converted into a pH value

• IP57 waterproof and easy-to-read LCD screen, replaceable electrode. There are calibration solution, electrode soak solution and backup batteries