ph6.8的pbs溶液配制要具体的药品名称及质量,不要两种液体配起来的,直接称取药品配制的,是磷酸盐缓冲溶液PBS,不是磷酸缓冲溶液PB

1* PBS Buffer
1 Dissolve the following in 800ml distilled H2O.
8g of NaCl
0.2g of KCl
1.44g of Na2HPO4
0.24g of KH2PO4
2 Adjust pH to 6.8.
3 Adjust volume to 1L with additional distilled H2O.
4 Sterilize by autoclaving

如果配制1升0.06mol/L,PH=6.8的缓冲溶液,那么
称取无水磷酸二氢钠（NaH2PO4）7.2克,火碱（NaOH）0.68克,加水搅拌溶解,最后定容1升即可.