Apperance:

glass-like pellets or lumps. Color: blue or light blue. Including blue gel indicator, chromotropic silica gel and blue silica gel. Turning from blue to red after absorbing moistures.

Application

Mainly used for absorbing moisture, anti-rusting of instruments, gauges and equipment in the enclosed conditions. After absorbing moisture, it turns from blue to red, visually indicating the relative humidity of the given environments. When being used with ordinary silica gel or drier, it indicates to which extent the drier absorbs the moisture and judges the relative humidity of a given environment. It is widely used as silica gel drier for the packing of precision instruments, leathers, shoes, clothes, foodstuffs, medicines and household electric appliances,etc.

Technical Data：

ITEM

Blue gel indicator

Discoloring silica gel

Blue silica gel

Typical values

Adsorption capacity, %

RH=20 % ≥

8

----

----

8.5

RH=35 % ≥

13

----

----

13.6

RH=50 % ≥

20

20

18

22.5

RH=90 % ≥

----

----

28

31.4

Rattler loss, % ≤

10

10

10

0.5

Qualified size ratio, % ≥

96

90

90

97

Loss on heating, % ≤

5

5

5

0.9

Colour

RH=20 %

Blue or light blue

----

----

RH=35 %

Purple or purplish red

----

----

RH=90 %

Light red

Light red light

Purple or light red

[Size] 1-3mm, 2-5mm, 4-8mm.

[Packing] 25kg per plastic bag or compound bag or 170kg per drum.