Hanna (HI7004-M) Ph 4.01 Buffer Caliberation Solution; 230ML Micron Rating1669 Compatible with standard 3/4" threaded

Compatible with standard 3/4" threaded fittings

and residential applications where arsenic contamination is present

whole-house sediment stages

Seamless rotationally molded construction resists corrosion

Hanna (HI7004-M) Ph 4.01 Buffer Caliberation Solution; 230ML Micron Rating1669 Compatible with standard 3/4" threadedHanna Instruments HI7004 M pH 4. 01 Calibration Buffer Solution NIST traceable precision buffer for accurate pH meter calibration in acidic range applications 230mL Bottle pH 4. 01 Standard NIST Traceable Batch Certified The Hanna HI7004 M is a laboratory grade pH 4. 01 buffer solution prepared to precise formulas and standardized against NIST calibrated reference meters. Each 230mL bottle includes batch number, expiration date, and a temperature