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Silica-related terminology
Abstract:
Surface area: is that per gram of silica gel with surface area, including internal and external surface area of ​​porous and 
Unit: square meters / gram (m2 / g) 
Pore ​​volume: silica gel per gram of the total pore volume. 
Unit: mg / g (ml / g) 
Aperture: refers to the internal pore diameter of silica gel. 
Unit: Egypt (A 0) or nano (nm) 1nm = 10A 0 
 
Adsorption: silica gel adsorption of some water vapor relative humidity reaches saturation, then the amount of adsorbed water vapor adsorption, said. 
Unit:% 
 
Bulk density: the quality of silica gel and its volume ratio heap space 
Unit: g / l (g / l) 
 
PH: hydrogen ion concentration itself is defined as the negative logarithm. PH value of the silica gel after a certain condition is treated with a certain proportion of silica in aqueous solution PH value. 
 
Specific resistance: is that an indicator of purity silica gel. Solution than the resistance itself is defined as resistance at 1cm distance. Specific resistance of silica gel is treated by certain conditions, the dissolution of silica in the water-soluble electrolyte, electric conductivity for the Determination of specific resistance. Higher than the resistance reflects the lower quality silica contained in the water-soluble electrolyte. 
Unit: ohm. Cm (Ω.cm) 
 
Wear rate: It is an indicator of the strength of silicone wear. Under certain conditions is Wear loss of silica
Unit:% 
 
Water do not burst rate: water-resistant silicone is a water level indicator. 
Unit:%