Blood Density Is Nearly Equal to Water Density: A Validation Study of the Gravimetric Method of Measuring Intraoperative Blood Loss

Table 2

Masses of the eighteen deionized water controls.

50 L deionized water controls
Control number	Mass (g)
1	0.0495
2	0.0495
3	0.0494
4	0.0496
5	0.0496
6	0.0487
7	0.0494
8	0.0495
9	0.0490
10	0.0489
11	0.0491
12	0.0492
13	0.0489
14	0.0490
15	0.0492
16	0.0491
17	0.0493
18	0.0487
Average	0.0492
Max	0.0496
Min	0.0487
Range	0.0009
SD	0.0003