Furthermore, the accuracy of wetassay of gold in experimental sample was studied by means of new reduction sampling formula.
用新的缩分取样公式研究了提金工艺实验样品湿法分析金的准确性。
2
In the forty years in China, a great advance of gold assay was made in four aspects, namely, fire assay, wetassay, phase analysis and sampling and preparation of sample.