The Sugar/Brix Refractometer comes with an instruction manual and additional materials needed for its use such as: B. distilled water, a soft cloth, an eyedropper and a small screwdriver. My high school daughter used it for a science fair project. My only complaint is that the gauges are small and difficult to read.
π PH 1-14 Extensive Storage Testing Monitoring: Optimize Your Storage with Precise pH Level Monitoring
6 Review
Accurate And Versatile Digital PH Meters For Food, Brewing, Hydroponics, Pools And More!
7 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