3/15/30 pH Buffer Powder 4.00/6.86/9.18 Calibration Sachets for pH Meter Tester

3 Following inhalation: Move victim into fresh air. If breathing is difficult, give oxygen. pH 4 contains Potassium hydrogen phthalate 100% CAS number: 877-24-7. pH 6.86 contains Disodium phosphate, Monopotassium phosphate 100% CAS numbers: 7778-77-0; 7558-79-4.

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