Apera Instruments AI1114 pH calibration Solution Kit (700, 400), 16 oz for Each, Plus Apera calPod Solution Holder, NIST traceab

Apera Instruments AI1114 pH calibration Solution Kit (700, 400), 16 oz for Each, Plus Apera calPod Solution Holder Apera pH calibration buffers are produced in an ISO 9001:2015 facility with ISO 17025:2017 accreditation using high-purity reagents, deionized water and certified analytical balances in a temperature controlled environment Reported values are accurate to - 001 pH at 25Ac and are traceable to NIST Standard Reference Materials (SRMs) MSDS documents are downloadable certificate of analysis can be achieved by request All pH buffers have a 2-year expiration from manufacture for an unopened bottle