Our orange silica gel indicator not impregnated with cobalt chloride, it is the latest product which can replace the blue silica gel indicator. The composite dyeing agent without pollution to the environment has been successfully adopted during the manufacturing process of the orange silica gel indicator. In this way , it has prevent the cobalt chloride from polluting the environment from the very beginning.
It discolors from orange into light green when adsorbing moisture. Orange silica gel indicators have much more adsorption capacity than that of the blue Indicating silical gel. The orange silica gel Indicator has won unprecedented acknowledgement and praise from the clients since its introduction in European and American markets.
Comparison of specification for Orange silica gel indicator (enterprise standard) with Blue silica gel indicator (industrial standard)
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Item |
Specification |
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|
Blue gel indicator (industrial std.) |
Orange gel indicator (enterprise std.) |
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|
appearance |
Dark blue |
Orange |
|
|
qualified ratio of size%≥ |
96 |
96 |
|
|
absorption capacity |
RH=20% |
8 |
9 |
|
RH=35% |
13 |
15 |
|
|
RH=50% |
20 |
24 |
|
|
loss on heating,%≤ |
2 |
2 |
|
|
indicator |
RH=20% |
blue or light blue |
orange |
|
RH=35% |
purple or purplish red |
Light green |
|
|
RH=50% |
light red |
Light blue |
|
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Note: the different size of Silica gel can be processed to your requirement. (RH is relative humidity) |
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According to tests on six batches of samples, the adsorption to water vapor is markedly higher than the original blue gel at specified relative humidity, and the color change is apparent after equilibration. Hence the enterprise standard is higher in adsorbence by 1%,2% and 4%, which makes the orange silica gel indicator even more competitive in the world market.
