磷化層的晶體構造能用電子顯微鏡或者高清放大鏡判斷磷化的好壞，也能把磷化層從零件上剝落下來然后測量，而且還可以用蠟塊等做成模型后測量。
The crystal structure of phosphating layer can be judged by electron microscope or high-definition magnifying glass. The phosphating layer can also be peeled off from the parts and measured. Moreover, wax block can be used to make model for measurement.
把磷化層剝落的辦法有：用鐵的零件把磷化層劃個口子，再拿稀鹽把磷化層融化，蠟模就是磷化層的一模一樣的復制，通過清洗，烘干后拿顯示鏡，用關照檢查。
The as like as two peas for the phosphating layer are: iron parts are used to draw phosphating layer and then the thin phosphating layer is melted. The phosphating layer is melted. Wax pattern is a duplicate copy of phosphating layer. After cleaning, the display mirror is used for drying and the examination is conducted with care.
小樣稱量之后，放到120度的烤爐里面烘烤1小時，把小樣拿出后，放到烘干的地方干了再稱量。平均的質量拿磷化層的厚度來表示。
After weighing the sample, put it into a 120 degree oven to bake for 1 hour. After taking out the sample, put it in the drying place and weigh it again. The average mass is expressed by the thickness of the phosphating layer.
兩塊已經知道的水分的樣品放到稀鹽里，5分鐘之后拿出來，靜候幾分鐘等都干了。試塊底面拿紙巾吸干，再放到小瓶子里稱量。測算出一個單位面積的增大的重量。通過測量水的兩個試塊，吊在很大的燒瓶里面。把試塊底部距離表面10厘米，蓋上蓋子把燒瓶密閉好，放進恒溫箱內24小時，立刻把試塊拿出來放到燒瓶里稱量重量。增大的重量拿膜重量的百分數衡量。
Put two known water samples into dilute hydrochloric acid, take them out after 5 minutes, wait for a few minutes, and then completely dry. The bottom surface of the test block is dried with a paper towel, and then weighed in a small bottle. Calculate the increase in weight per unit area. By measuring two test blocks of water, they are suspended in a large flask. Put the bottom of the test block 10 cm away from the surface, cover the flask, put it into the incubator for 24 hours, and immediately take out the test block and put it into the flask to weigh. The increased weight is measured as a percentage of the membrane weight.
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