For pH meter standardization. Color-coded for easy identification. Contains: 10 pillows of pH 4.01 buffer （red） and 10 pillows of pH 7.00 buffer （yellow）.
Fresh and reliable
Fresh and reliable
Unit-dose powder pillows assure buffer freshness and eliminate the possibility of contamination.
Specifications
Concentration:4.01 pH and 7.00 pH
Description :Buffer PP （color-coded Red and Yellow）
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