容量瓶和滴定管的绝对校准方法及水的密度数据表
发布时间：2017-12-04
容量仪器的绝对校正方法
(不考虑玻璃材料的体热膨胀引起的系统误差和称量时空气密度引起的系统误差)：
一、容量瓶的校正
1、测定并记录纯水的温度tw ℃
2、将洗净的容量瓶倒置凉干；
3、将干净干燥的容量瓶在灵敏度为0.01g的电子台秤上称取并记录其质量mv1；
3、向容量瓶中加纯水至出厂刻度处，再称取并记录盛水容量瓶的质量mv2。
二、滴定管的校正
1、将洗净的酸式滴定管装入纯水，赶气泡，调节液面至0.00mL；
2、将外壁干净干燥的锥形瓶在灵敏度为0.01g的电子台秤上称取并记录其质量mte；
3、从滴定管中按正常的滴定速度每次放出5mL纯水至锥形瓶中，然后在灵敏度为0.01g的电子台秤上称取盛水锥形瓶的质量，并记录滴定管体积体积读数(vt1,vt2,vt3,vt4,vt5,vt6,vt7)及对应的盛水锥形瓶的质量(mt1, mt2, mt3, mt4, mt5, mt6,mt7)（为减小误差，此操作过程中应保持锥形瓶外壁干净干燥，外壁有水时应用干棉布擦干水份）。
附：数据记录表
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附：水温与水的密度对应关系表
| 水温 /℃ | 密度 /g.L-1 | 水温 /℃ | 密度 /g.L- | 水温 /℃ | 密度 /g.L-1 |
| 1.0 | 999.921 | 10.8 | 999.612 | 20.6 | 998.082 |
| 1.2 | 999.928 | 11.0 | 999.592 | 20.8 | 998.040 |
| 1.4 | 999.935 | 11.2 | 999.572 | 21.0 | 997.997 |
| 1.6 | 999.941 | 11.4 | 999.551 | 21.2 | 997.953 |
| 1.8 | 999.947 | 11.6 | 999.530 | 21.4 | 997.910 |
| 2.0 | 999.952 | 11.8 | 999.508 | 21.6 | 997.865 |
| 2.2 | 999.956 | 12.0 | 999.486 | 21.8 | 997.821 |
| 2.4 | 999.960 | 12.2 | 999.463 | 22.0 | 997.776 |
| 2.6 | 999.963 | 12.4 | 999.440 | 22.2 | 997.730 |
| 2.8 | 999.966 | 12.6 | 999.416 | 22.4 | 997.685 |
| 3.0 | 999.968 | 12.8 | 999.392 | 22.6 | 997.638 |
| 3.2 | 999.969 | 13.0 | 999.367 | 22.8 | 997.592 |
| 3.4 | 999.970 | 13.2 | 999.342 | 23.0 | 997.545 |
| 3.6 | 999.970 | 13.4 | 999.316 | 23.2 | 997.497 |
| 3.8 | 999.970 | 13.6 | 999.290 | 23.4 | 997.450 |
| 4.0 | 999.969 | 13.8 | 999.263 | 23.6 | 997.401 |
| 4.2 | 999.968 | 14.0 | 999.236 | 23.8 | 997.353 |
| 4.4 | 999.966 | 14.2 | 999.208 | 24.0 | 997.304 |
| 4.6 | 999.963 | 14.4 | 999.180 | 24.2 | 997.254 |
| 4.8 | 999.960 | 14.6 | 999.152 | 24.4 | 997.204 |
| 5.0 | 999.956 | 14.8 | 999.123 | 24.6 | 997.154 |
| 5.2 | 999.952 | 15.0 | 999.093 | 24.8 | 997.103 |
| 5.4 | 999.947 | 15.2 | 999.063 | 25.0 | 997.052 |
| 5.6 | 999.942 | 15.4 | 999.033 | 25.2 | 997.001 |
| 5.8 | 999.936 | 15.6 | 999.002 | 25.4 | 996.949 |
| 6.0 | 999.929 | 15.8 | 998.970 | 25.6 | 996.897 |
| 6.2 | 999.922 | 16.0 | 998.939 | 25.8 | 996.844 |
| 6.4 | 999.915 | 16.2 | 998.906 | 26.0 | 996.792 |
| 6.6 | 999.907 | 16.4 | 998.873 | 26.2 | 996.738 |
| 6.8 | 999.898 | 16.6 | 998.840 | 26.4 | 996.684 |
| 7.0 | 999.889 | 16.8 | 998.807 | 26.6 | 996.630 |
| 7.2 | 999.879 | 17.0 | 998.772 | 26.8 | 996.576 |
| 7.4 | 999.868 | 17.2 | 998.738 | 27.0 | 996.521 |
| 7.6 | 999.858 | 17.4 | 998.703 | 27.2 | 996.466 |
| 7.8 | 999.846 | 17.6 | 998.667 | 27.4 | 996.410 |
| 8.0 | 999.834 | 17.8 | 998.631 | 27.6 | 996.354 |
| 8.2 | 999.822 | 18.0 | 998.595 | 27.8 | 996.298 |
| 8.4 | 999.809 | 18.2 | 998.558 | 28.0 | 996.241 |
| 8.6 | 999.795 | 18.4 | 998.521 | 28.2 | 996.184 |
| 8.8 | 999.781 | 18.6 | 998.483 | 28.4 | 996.126 |
| 9.0 | 999.767 | 18.8 | 998.445 | 28.6 | 996.069 |
| 9.2 | 999.751 | 19.0 | 998.406 | 28.8 | 996.010 |
| 9.4 | 999.736 | 19.2 | 998.367 | 29.0 | 995.952 |
| 9.6 | 999.720 | 19.4 | 998.328 | 29.2 | 995.893 |
| 9.8 | 999.703 | 19.6 | 998.288 | 29.4 | 995.834 |
| 10.0 | 999.686 | 19.8 | 998.248 | 29.6 | 995.774 |
| 10.2 | 999.668 | 20.0 | 998.207 | 29.8 | 995.714 |
| 10.4 | 999.650 | 20.2 | 998.166 | 30.0 | 995.654 |
| 10.6 | 999.631 | 20.4 | 998.124 | 30.2 | 995.593 |