Glass Lactometer Milk Purity Tester Meter Check Water in Milk At Home for Measuring 1000 ul micropipette com s files 1 2407 1409 products double beam spectrophotometer uv vis laboratory equipment manufacturer supplier laboratorydeal technology electronic device_233 com s files 1 2407 1409 products double beam spectrophotometer uv vis laboratory equipment manufacturer supplier laboratorydeal technology electronic device_233 "category":"Inertia disc" If the milk is mixed in water then it would sink higher then marked ‘M’ # Step 2 If it sinks up to the mark ‘M’ which mentioned at lactometer that means milk is pure or if not that means milk is impure