磷酸氢二钠—磷酸二氢钾缓冲液（1/15mol/L）
pH 1/15mol/L
Na2HPO4/ml 1/15mol/L
KH2PO4/ml pH 1/15mol/L
Na2HPO4/ml 1/15mol/L
KH2PO4/ml
4.92 0.10 9.90 7.17 7.00 3.00
5.29 0.50 9.50 7.38 8.00 2.00
5.91 1.00 9.00 7.73 9.00 1.00
6.24 2.00 8.00 8.04 9.50 0.50
6.47 3.00 7.00 8.34 9.75 0.25
6.64 4.00 6.00 8.67 9.90 0.10
6.81 5.00 5.00 8.18 10.00 0
6.98 6.00 4.00
Na2HPO4•2H2O,Mr = 178.05,1/15mol/L溶液为11.876g/L
KH2PO4,Mr = 136.09,1/15mol/L溶液为9.078g/L
硼酸—硼砂缓冲液（0.2mol/L硼酸根）
pH 0.05mol/L
硼砂/ml 0.2mol/L
硼酸/ml pH 0.05mol/L
硼砂/ml 0.2mol/L
硼酸/ml
7.4 1.0 9.0 8.2 3.5 6.5
7.6 1.5 8.5 8.4 4.5 5.5
7.8 2.0 8.0 8.7 6.0 4.0
8.0 3.0 7.0 9.0 8.0 2.0
硼砂Na2B4O7•10H2O,Mr = 381.43,0.05mol/L溶液（=0.2 mol/L硼酸根）为19.07g/L,硼砂易失去结晶水,必须密闭保存
硼酸H3BO3,Mr = 61.84,0.2mol/L溶液为12.37g/L