Look at the color. High-quality calcium sulfate is grayish white and loose powdery and no variegated color. If the color is very mixed, it is the choice of material, acidification process is incomplete or mixed with other fillers.
Smell the smell. The standard calcium carbonate contains 3.5% to 5% of free acid and can smell a faint sour gas. If the odor is too light, it indicates insufficient acidification; if the odor is too strong, it indicates that the acidification is excessive; if there is a very pungent smell and sour taste, it means that waste sulfuric acid is added to the production, which is a poor quality calcium sulphate and is toxic.
Touch it. The quality of standard calcium superfluous water does not exceed 14%, and the hand feels a cool feeling, but the hand is water-free. Super wet calcium will stick to the hand, and the quality of the overdrying will be rough. The quality of these two kinds of normal calcium is low and the efficiency of the fertilizer is poor.
Observing the stomata. High-grade calcium chloride can see many tiny pores on larger particles. Handkerchiefs are fragile and a little creaminess is added. Adulterated, there are few pores, and the handkerchief is not brittle, and the creamy feel is poor.
Color rendering. Put some calcium in the carrot juice, such as from purple to red, put some calcium in the leek juice, if changed from red to dark red, then the quality of calcium is good, and vice versa.
Canned Oyster Mushromms,Oyster Mushromms Canned,Oyster Mushromms Tin,Canned Mushroom Whole
ZHANGZHOU TAN CO. LTD. , https://www.zztancan.com