Oakton pH buffer pouches; pH 4.01, 20/pk
Standardized against NIST standards, premixed, and ready to use. Pouch contains 4.01 pH water used as a calibration solution. "Singles" are convenient for high-precision calibration on-the-go.All Oakton pH buffer solutions are freshness dated, and standardized against NIST-certified references to ensure quality. ¯¿½0.01 pH at 25¯¿½C.Specifications Ideal for field calibration. NIST traceable materials. ¯¿½1% accuracy at 25¯¿½C.
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