#refrectometer

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Refractometer - Users Guide

What is a refractometer?

A refractometer measures the index of refraction for a material, which might be a gas, a liquid, or a transparent solid like glass. They achieve this by passing light through the sample and measuring the refraction — the quantity that the rays bend.

https://analytical-instrumentation-australia.blogspot.com/2021/07/refractometer-users-guide.html

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Basic concepts of pH Meter

What are a pH Meter and the way does it Work?

                        A pH meter is a device used to measure the acidity or alkalinity of a liquid solution - also called pH. pH is the unit that describes the degree of acidity or alkalinity. It's measured on a scale of 0 to 14.A pH meter consists of three different parts: an internal electrode, a reference electrode, and a high input impedance meter.

https://analytical-instrumentation-australia.blogspot.com/2021/07/basic-concepts-of-ph-meter.html