Look at the color. The high-quality calcium is grayish white and loose powder with no mottling. If the color is very mixed, it is poor material selection, incomplete acidification process or other fillers.
Smell the smell. The standard calcium is 3.5% to 5% free of acid, which can smell a touch of acid. If the smell is too light, it means that the acidification is insufficient; if the smell is too thick, it means excessive acidification; if there is a very pungent smell and sourness, it means that the waste sulfuric acid is added in the production, which is inferior calcium and is toxic.
Touch by hand. The standard calcium content of the high-quality calcium is not more than 14%. It has a cool feeling when touched by hand, but there is no trace on the hand. The excessively wet calcium will stick to the hand, and the dry quality will be rough. The two kinds of calcium are low in quality and poor in fertilizer efficiency.
Observing the pores. High-quality calcium can see a lot of tiny pores on the larger particles, the handcuffs are brittle, and the water is slightly slippery. Adulterated, there are fewer stomata, the handcuffs are not easy to break, and the slipperiness is poor.
Color method. Put some calcium in the carrot juice, such as from purple to red, put a little calcium in the leek juice, such as from red to deep red, it means that the quality of calcium is good, and vice versa.
Soil and fertilizer room of Agricultural Technology Extension Station, Tongzhou District, Beijing
Smell the smell. The standard calcium is 3.5% to 5% free of acid, which can smell a touch of acid. If the smell is too light, it means that the acidification is insufficient; if the smell is too thick, it means excessive acidification; if there is a very pungent smell and sourness, it means that the waste sulfuric acid is added in the production, which is inferior calcium and is toxic.
Touch by hand. The standard calcium content of the high-quality calcium is not more than 14%. It has a cool feeling when touched by hand, but there is no trace on the hand. The excessively wet calcium will stick to the hand, and the dry quality will be rough. The two kinds of calcium are low in quality and poor in fertilizer efficiency.
Observing the pores. High-quality calcium can see a lot of tiny pores on the larger particles, the handcuffs are brittle, and the water is slightly slippery. Adulterated, there are fewer stomata, the handcuffs are not easy to break, and the slipperiness is poor.
Color method. Put some calcium in the carrot juice, such as from purple to red, put a little calcium in the leek juice, such as from red to deep red, it means that the quality of calcium is good, and vice versa.
Soil and fertilizer room of Agricultural Technology Extension Station, Tongzhou District, Beijing
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
Slip-On flanges or SO flanges are commonly lower in price than weld-neck flanges, and to this effect are a popular choice for our customers. It is welded both inside and out to provide suffcient strength and prevent leakage. Slip-On Pipe Flanges. As made obvious by their name, these pipe flanges slip over the pipe. They're manufactured with an inside diameter that is slightly bigger than the pipe's outside diameter. These attachments are connected to the pipe via fillet weld at the top and bottom of the flange.
Slip On Plate Flanges,Slip On Flange,Class 150 Flanges,Carbon Steel Slip On Flanges
Shandong Zhongnuo Heavy Industry Co.,Ltd. , https://www.zhongnuoflanges.com