GroLine pH 4.01 Calibration Buffer (230 mL) hiking water filter rugged design

rugged design

provides a measure of Total Dissolved Solids (ppm) reading

01 pH removing the inaccuracies involved with mixing calibration solutions from powder

Product Dimensions:11

GroLine pH 4.01 Calibration Buffer (230 mL) hiking water filter rugged designHI7004 023 is a high quality pH 4. 01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly marked on the label and are air tight with a tamper proof seal to ensure the quality of the solution. Hanna's line of technical calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened