pH12.46, etc., should be packed in a polyethylene bottle) with a tight cap. It should be stored at a low temperature (5-10°C) in the refrigerator. Generally, it can be used for about two months. If there is turbidity, mildew, or precipitation, it cannot be used. When using, you should prepare several 50ml polyethylene vials, pour the buffer solution in the large bottle into the vial, and place it at ambient temperature for 1 to 2 hours, and wait for the temperature to equilibrate before use. Do not pour back into the big bottle after use to avoid contamination. The buffer solution in the small bottle can be used for 2~3 days under environmental conditions of >10 grados Generalmente, se puede utilizar el tiempo de uso de las tres soluciones de pH7.00, pH6.86 y pH4.00. Las soluciones de pH 9,18 y pH 10,01 absorben CO2 en el aire durante más tiempo y sus valores de pH son relativamente fáciles de cambiar.
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