Atago 2351 MASTER-53 (Alpha) Hand-Held Refractometer, Automatic Temperature Compensation, Brix 0.0 to 53.0%

Atago 2351 MASTER-53 (Alpha) Hand-Held Refractometer, Automatic Temperature Compensation, Brix 0.0 to 53.0%

Apera Instruments Premium-Series PH60S Food pH Pocket Tester Kit, Swiss Spear pH Electrode, ±0.01 pH Accuracy, -2.00-16.00 pH Range (AI313)

MILWAUKEE'S Instruments MA871 Digital Brix Refractometer, Range 0-85%