For Type B silica gel, its appearance is semitransparent particle，classified as two categories, i.e. spherical item and granular(lumpy) item, this item is mainly used for modulation of air humidity and used as catalyst, carrier and pet padding，can also be used as the raw material for column chromatography and fragrant silica gel, The key technological specifications of its premium quality item as follows:
Item |
specifications |
High-class product |
First-rate product |
Adsorption capacity%（25℃）≥ % |
RH=20% |
4 |
3 |
RH=50% |
11 |
10 |
RH=90% |
70 |
50 |
Loss on heating ≤ % |
4 |
5 |
The qualified ratio of spherical particles ≥ % |
82 |
---- |
SiO2 content ≥ % |
98 |
98 |
Particle size mm |
1-3mm、 2-4mm、 4-8mm, etc. |
Packing |
20kg/bag 15kg/bag, etc. |
Note：Made as per the agreement if any special request |
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