Maximum: 1

Always calibrate after cleaning the probe or when readings seem inaccurate

The Milwaukee DO Meter is popular with everyone from field biologists and educators to fish farmers and koi pond owners

Set Point: On-screen buttons

Digital automatic calibration (one point)

GroLine 1413 µS/cm Conductivity Calibration Standard Sachets (25 x 20mL) made in usa water filter Maximum: 1HI70031G Premium 1413 S cm Conductivity Calibration Standard Professional grade conductivity solution designed for hydroponics, aquaponics, greenhouses, and laboratory applications. Single use sachets deliver convenience, accuracy, and portability for on the go testing. Key Features & Benefits NIST Traceable Accuracy: Standardized with potassium chloride NIST 2202 SRM in deionized water per ISO 3696 BS3978 Certificate of Analysis Included: Each lot