Produced in an ISO 9001:2015 certified facility using high-purity reagents, deionized water and certified analytical balances in a temperature controlled environment
Multiple colors,easy to distinguish
Different volume, meet different application
Long lifetime, 2-year expiration from manufacture for an unopened bottle
وصف
ONiLAB Instruments pH Calibration Buffer Solution Kit for pH/ORP Electrodes, 4.00 & 7.00 pH, 250ml Each