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Store And Use PH Buffer Solution Of Ph Tester

- Feb 12, 2018 -

How to properly store and use pH buffer solution for the ph tester ?


After the buffer solution is formulated, it should be placed in a glass bottle or polyethylene bottle (alkaline pH buffer such as pH9.18, pH10.01, pH12.46, etc., should be installed in polyethylene bottles) Tight, in the refrigerator at low temperature (5-10 ℃) preservation, generally can be used for about two months, if found to be cloudy, moldy or sedimentation phenomenon, can not continue to use. 


When used, should be prepared in several 50ml polyethylene vials, the large bottle of the buffer solution into the vial and placed in an ambient temperature for 1 to 2 hours, wait until the temperature balance before use. After use can not be poured back into the big bottle, so as to avoid contamination, the buffer solution in the vial can be used under ambient conditions> 10 ℃ 2 to 3 days, the general pH7.00, pH6.86 and pH4.00 three kinds of solution can be used time The longer the pH9.18 and pH10.01 solutions are, the easier they will change in pH due to the absorption of CO2 in the air.


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