Alkatronic ph calibration solution 4.01

HI70004C is a premium quality pH 4.01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring freshness each time one is opened. 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 sachet. The HI70004C is for 25 sachets containing 20 mL of buffer.

• Supplied with Certificate of Analysis
• Accuracy of +/- 0.01 pH @ 25^°C
• Temperature chart of the actual pH value at various temperatures printed on each bottle