Hanna Instruments HI7004L 4.01 pH Calibration Buffer Solution, 500mL Bottle HI7041L insert the cuvette

insert the cuvette

HI50036P is a quality quick calibration solution produced in accordance with ISO 3696/BS3978 standards using high purity salts

Unscrew the wing nut

Heavy metals — including cadmium and mercury

Whether you’re calibrating in a hydroponics grow room

Hanna Instruments HI7004L 4.01 pH Calibration Buffer Solution, 500mL Bottle HI7041L insert the cuvetteThis buffer value is widely used in water purification plants, in the food industry, and wherever the pH is expected to be slightly acidic. Traceable to NIST standards Available in bottles or sealed sachets, complete with or without a certificate of analysis. Multiple resolutions for better accuracy. NIST Traceability Standardized using a pH meter calibrated by means of two standard solutions prepared from NIST standard reference materials. Color