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度。 一般的に、pH7。00、pH6。86、pH4。00の3つの溶液の使用時間を使用できます。 より長く、pH9.18およびpH10.01の溶液は、空気中のCO2を吸収し、それらのpH値は比較的簡単に変更できます。
写真の下のPlsクリックとこのPHメーターPH818の詳細をお読みください？
PH818製品リンク：
