HI70004P pH 4.01 Calibration Buffer Sachets (25 x 20 mL)

HI70004P is a quality pH 4.01 calibration buffer produced in accordance with ISO 3696/BS3978 standards using high purity salts, deionized water, certified weight-checked balances, and Class A glassware in a temperature controlled environment monitored with certified thermometers. Reported values are accurate to +/- 0.01 pH @ 25C and are traceable to NIST Standard Reference Materials (SRMs).Features:– Ideal for users that do not calibrate frequently- Ideal for field use due to portability- Every sachet is as fresh as the day it was packaged – Light block packaging prevents oxidation from UV light that could alter the buffer value- Hanna buffers are specially formulated to have an expiration of 5 years from manufacture for an unopened sachet.- Easy to identify different buffer values- Solution does not contain any dyes that may stain the reference cell of a pH electrode

Specifications

– Description: standard calibration buffer- Certificate of Analysis: no- pH Accuracy: 0.01 pH- pH Value at 25C: 4.01- Package: sachets- Quantity: 25- Size: 20 mL