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0% O2 Calibration Capsules 

OXCAL

For recommended 0% O2 calibration of optical oxygen sensors. Each capsule results in 50mL calibration solution (PU=10).

Calibration Buffer Capsules (pH 4.0)

PHCAL4

For obligatory acid calibration of optical pH sensors. Each capsule results in 100mL calibration buffer solution (PU=10).

Calibration Buffer Capsules (pH 10.0)

PHCAL10

For recommended basic calibration of optical pH sensors. Each capsule results in 100mL calibration buffer solution (PU=10).