This Industrial and Scientific reader is unreliable and often gives incorrect readings .The compact size makes it easy to TRANSPORT, but that advantage is negated by the product's unreliability. The product is not worth the cost, as it often requires recalibration and repairs..
TDS water quality tester - TDS water hardness meter (portable digital salt meter for water analysis)
9 Review
Efficiently Test Your Antifreeze And Battery Acid With A 3-In-1 Refractometer
18 Review
80 Pieces Water Test Litmus Strips Litmus ph Paper Soil Acidity Meter Liquid pH Tester 1-14
10 Review
Portable digital multimeter with sound continuity and thermocouple (electric tester) LTX DT-838
7 Review