1, first weigh a certain amount of borax and record the weight.

2, and then weigh about 0.3 grams of borax benchmark, this time also record the weight, and the two items can not be confused.

3, next we have to use to the beaker, which to 1:1000 ratio of water, because borax is not easy to dissolve, so we need to heat.

4, such as borax all dissolved, we can transfer to the container, borax water is also configured.