I bought this for my niece and her friends to teach them about acidity and alkalinity. Demonstration directly on a liquid gives a deeper impression of which color is acidic and which is alkaline. Excellent learning material
TDS water quality tester - TDS water hardness meter (portable digital salt meter for water analysis)
9 Review
Portable digital multimeter with sound continuity and thermocouple (electric tester) LTX DT-838
7 Review
π― Honey Refractometer with Automatic Temperature Compensation (ATC) - Tiaoyeer Moisture, Brix, and Baume Refractometer for Honey, 58-90% Brix Scale Range - Honey Moisture Tester
31 Review
80 Pieces Water Test Litmus Strips Litmus ph Paper Soil Acidity Meter Liquid pH Tester 1-14
10 Review
Accurate Formaldehyde Multifunctional Detector Recording
3 Review
π BIAOLING Accurate Formaldehyde Multifunctional Test: Record, Measure, and Inspect with Confidence
3 Review
0-5000ppm Relative Humidity Detector Temperature
3 Review
π Unveiling Fluke 107: A Cutting-Edge Handheld Multimeter for Accurate Current Measurements
3 Review