How to make glass milk.

glass milk production method is as follows:
1, glass powder purchase, the literature said 325 items, but can not buy, there is no condition to grind themselves, sell 400 purposes
can also be,
because the need for glass powder fineness is much lower than 4
00 eyes;
3, sedimentation 90min; take the clear (industrial glass powder surface may have impurities floating, pour off not), centrifugal 3000rpm 3min (experimented the centrifugal force is sufficient), generally divided into 3 to 4 tubes 50 ml
centrifugal tube
in;
4, as far as possible poured up clear, each tube added 1 ml distilled water, vortex, heavy precipitation;
5, each tube added 3 ml analysis pure nitric acid (concentration of about 65%, mixed, overnight;
6, 3000rpm centrifugal 3min, poured over the clear;
7, Each tube adds 30ml of pure water, fully re-suspended, 3000rpm centrifugal 3min, poured over the clear;
8, each tube added 1.5 ml of water, vortex shock after the transfer to 2 ml centrifuge tube (the reason for doing so, is to weigh, 50 ml centrifuge tube error is large, 2 ml centrifuge tube after repeated weighing, tube error within 0.03g, can be ignored), said poor quality after obtaining glass powder quality, calculate the total quality of each tube glass powder.
9, each tube added 1.5 ml of pure water, remember how much volume of water added;
10, rehang, and then transfer each tube heavy suspension to 50 ml centrifuge tube, according to the total quality according to 20% concentration, fill the volume of pure water, mix well;
11, according to the need to be divided and stored in -70 degrees.
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