£17.40 £20.88 (Inc. VAT)
HI-7004-023 is a 230 mL bottle of 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 2 years from the date of manufacture for an unopened bottle.
€¢Specially formulated to have an expiration of 2 years from manufacture for an unopened bottle
€¢Accuracy of ±0.02 pH @ 25°C
€¢Supplied with a Certificate of Analysis
€¢Temperature chart of the actual pH value at various temperatures printed on each bottle