Blue silica gel,is also called self-indicating silica gel. Blue silica gel sachet.

Allochroic silica gel (blue to light pink)

Characteristics:Shape: 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.

Use: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 % ≥	8.0	----	----	8.5
	RH=35 % ≥	13.0	----	----	13.6
	RH=50 % ≥	20.0	20.0	18.0	22.5
	RH=90 % ≥	----	----	28.0	31.4
Rattler loss, % ≤		10.0	10.0	10.0	0.5
Qualified size ratio, % ≥		96	90	90	97
Loss on heating, % ≤		5.0	5.0	5.0	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, 2-4mm, 3-5mm,4-8mm

[Packing]  Carton(20bottles,500g/bottle),bag,as custom's request.

[Notes] Packing and size may be customized per your specific requirements.  

allochroic silica gel self-indicating