Portable And Light Weight Hand Held Refractometer

High Sensitivity Pen-Type pH Meter - Range 0.0~14.0pH, 170x36x23 mm | Automatic Temperature Compensation, Portable Design, Easy Operation

KL-9806 Aquarium Digital Mini Thermometer - Plastic, 60×55×23 mm, Black | Durable Design, LCD Display, In/Out Temperature Measurement, -50 to 70°C

pH Standard Buffer Powder - 3-Pack Set of pH4.00, pH6.86, pH9.18 , Easy-to-Use Powdered Solutions with 99.5% Purity for Industrial Applications

PH6.86 Buffer Solutions 35 mL Bottle Pack

PH4.00 Buffer Solution 35 ML Bottle Pack

Light Weight and Durable 201W PH Electrode

Light Weight Portable KL-169-E ORP Redox Tester

KL-013 Portable pH mV Temperature Meter - Plastic, 180mm x 83mm x 46mm, Multiple Colors | 9V Power Supply, Easy Manual Calibration, 4-Digit LCD Display

Digital Display DDS-307 Laboratory Conductivity Meter

KL-16961 ORP Redox Tester - Plastic, 155mm x 31mm x 16mm, Multiple Colors | 1999mV Measuring Range, 5mV Accuracy, 1mV Resolution, 60g Weight, 4-Digital LCD Display