Stable and repeatable solid state standard for RFU calibration and checks on the Aqua TROLL FDOM sensor.

NIST-traceable conductivity solutions for low-range, high-range, or full-range calibrations.

NIST-traceable calibration solution. Available in pH 4, 7, or 10 in various volumes.

NIST-traceable conductivity solutions for low-range, high-range, or full-range calibrations.

pH/ORP Calibration Kit – Includes 1 Liter each: 4, 7, 10 pH, Zobell’s Solution

pH Calibration Kit – Includes 1 Liter each: 4, 7, 10 pH, DI Water