UNFAIRZQ ORP Buffer Solution Powder Fitting For Tester Meter Measure Calibration Liquid 256mV Correction Practical

Please note: The product does not include the test pen in the picture, this is a mold to show the powder function. ORP Buffer Calibration Powder Redox Potential Analyzer Test Pen Calibration 256. This powder can be configured with 256mv ORP calibration liquid. ORP correction powder buffer powder is a newly developed, convenient to transport and carry, solves the problem of inconvenience and expensive transportation of ORP correction liquid, and makes ORP correction more convenient and easy. It is recommended to buy in large quantities, with greater discounts and faster logistics!