巴比妥钠盐分子量=206.18;0.04M溶液为8.25克/升
10.Tris–盐酸缓冲液(0.05M,25℃)
50毫升0.1M三羟甲基氨基甲烷(Tris)溶液与X毫升0.1N盐酸混匀后,加水稀释至100毫升。
| pH | X(毫升) | pH | X(毫升) |
| 7.10 7.20 7.30 7.40 7.50 7.60 7.70 7.80 7.90 8.00 | 45.7 44.7 43.4 42.0 40.3 38.5 36.6 34.5 32.0 29.2 |
8.10 8.20 8.30 8.40 8.50 8.60 8.70 8.80 8.90 | 26.2 22.9 19.9 17.2 14.7 12.4 10.3 8.5 7.0 |
| pH | 0.05M硼砂(毫升) | 0.2M硼砂(毫升) | pH | 0.05M硼砂(毫升) | 0.2M硼酸(毫升) |
| 7.4 7.6 7.8 8.0 | 1.0 1.5 2.0 3.0 |
9.0 8.5 8.0 7.0 | 8.2 8.4 8.7 9.0 | 3.5 4.5 6.0 8.0 | 6.5 5.5 4.0 2.0 |
| pH | 0.05M硼砂(毫升) | 0.2M硼酸(毫升) | pH | 0.05M硼砂(毫升) | 0.2M硼酸(毫升) |
| 7.4 7.6 7.8 8.0 | 1.0 1.5 2.0 3.0 | 9.0 8.5 8.0 7.0 |
8.2 8.4 8.7 9.0 | 3.5 4.5 6.0 8.0 | 6.5 5.5 4.0 2.0 |
| pH | X | Y | pH | X | Y |
| 8.6 8.8 9.0 9.2 9.4 | 50 50 50 50 50 | 4.0 6.0 8.8 12.0 16.8 | 9.6 9.8 10.0 10.4 10.6 | 50 50 50 50 50 | 22.4 27.2 32.0 38.6 45.5 |
| pH | X | Y | pH | X | Y |
| 9.3 9.4 9.6 | 50 50 50 | 6.0 11.0 23.0 |
9.8 10.0 10.1 | 50 50 50 | 34.0 43.0 46.0 |
| pH | 0.1MNa2CO3(毫升) | 0.1MN2HCO3(毫升) | |
| 20℃ | 37℃ | ||
| 9.16 9.40 9.51 9.78 9.90 10.14 10.28 10.53 10.83 | 8.77 9.12 9.40 9.50 9.72 9.90 10.08 10.28 10.57 | 1 2 3 4 5 6 7 8 9 | 9 8 7 6 5 4 3 2 1 |
| PH | 7.6 | 7.4 | 7.2 | 7.0 |
| H2O NaCl Na2HPO4 NaH2PO4 | 1000 8.5 2.2 0.1 | 1000 8.5 2.2 0.2 | 1000 8.5 2.2 0.3 | 100ml 8.5g 2.2g 0.4g |


