5-IN-1 Digital Water Quality Tester Waterproof pH TDS EC Temperature Meter Pool Outdoor Benches The 58 Coding Lie Detector

The 58 Coding Lie Detector is an exciting science kit that lets children learn about how lie detection technology works through coding and experiments

ideal for haircuts

it's a space where your child can grow

contributing to a comfortable and restful night's sleep

5-IN-1 Digital Water Quality Tester Waterproof pH TDS EC Temperature Meter Pool Outdoor Benches The 58 Coding Lie DetectorFeature: Multi functional water quality test pen, which can measure ph pH, solubility, EC conductivity, salinity and temperature. (Sea salt fresh water salt) It is a waterproof water quality test pen with five functions. It has high performance, pen design and fast numerical value. Parameters: Sea salt: Sea water salinity is the ratio of total dissolved solids to the weight of sea salt in sea water, usually expressed in grams per kilogram of sea