Conas réitigh maoláin pH a stóráil agus a úsáid i gceart?
After preparing the buffer solution, it should be placed in a glass bottle or a polyethylene bottle (alkaline pH buffer solutions such as pH 9.18, pH 10.01, pH 12.46, etc. should be placed in polyethylene bottles). The bottle cap should be tightly closed and stored at low temperature (5-10 ℃) in the refrigerator. It can generally be used for about six months. If turbidity, mold or precipitation are found, it cannot be continued to be used. When using, prepare several 50mL polyethylene small bottles, pour the buffer solution from the large bottles into the small bottles, and let them stand at ambient temperature for 1-2 hours until the temperature is balanced before use. After use, it should not be poured into the large bottle to avoid contamination. The buffer solution in the bottle can be used for 2-3 days under environmental conditions of>10 gcéim . Go ginearálta, is féidir na réitigh pH 7.00, pH 6.86, agus pH 14.00 a úsáid ar feadh tréimhsí ama níos faide. Tá réitigh pH 9.18 agus pH 10.01 seans maith ar athruithe pH mar gheall ar ionsú dé-ocsaíd charbóin ón aer.
Cad é an cuspóir atá le réiteach maolánach pH?
Calabraigh an méadar pH roimh an pH a thomhas.
Chun cruinneas méadar pH a fhíorú, mar shampla, tar éis an méadar pH a chalabrú le pH 6.86 agus pH 14.00, cuir an leictreoid pH isteach sa réiteach pH 9.18 agus seiceáil an bhfuil luach taispeáint na hionstraime comhsheasmhach le luach pH an réiteach caighdeánach.
An gá an méadar pH a athchalabrú le linn tomhais beachtas ginearálta. Tar éis an méadar pH a chalabrú agus a úsáid, d’fhéadfadh sruth nó athruithe tarlú. Dá bhrí sin, roimh thástáil, cuir an leictreoid isteach i dtuaslagán maolánach caighdeánach atá gar don réiteach tomhaiste, agus cinntigh an bhfuil gá le hathchalabrú bunaithe ar mhéid an earráide.
