本法是依据虹吸作用,在测定时,把蜡封矿石直接放在一个自由表面不大的盛有水的容器中,矿石所排开的等体积水即通过虹吸管全部转入另一个精确的量器.这时,从量器壁上的刻度读出该蜡封矿石的体积.此方法操作简便,容易掌握,而且避免了很多繁杂的加减数字,质量也能满足要求.因该方法与水的密度无关,所以测定时可不考虑用水类型. This law is based on the role of siphon, in the determination of the wax seal ore directly on a free surface is not large container with water, the ore is discharged by the same volume of water that is siphoned into another precise amount In this case, the volume of the wax seal ore is read out from the scale on the wall of the measuring device, which is easy to operate and easy to handle and avoids many complicated addition and subtraction figures, and the quality can meet the requirement. The density has nothing to do, so the determination may not consider the type of water.