Product style: ZPG        

Specifications：It meets HB/Z139 standard and military specifications. The characteristic parameters of Oxygen Indicator are in table 1.

Table 1

item	characteristic parameter
shape	round, sizeΦ7×2mm
colour change	oxygen concentration ≥1%：blue oxygen concentration≈0.5%：purple oxygen concentration ≤0.1%：pink
colour sensitivity T：25±2℃ RH：60%-90%	The Oxygen Indicator is turning blue in 30 minutes when oxygen is present and turning pink in 4 hours when in an oxygen free environment.
reversible times	≥ten times

Precautions: when the temperature is below ten centigrade, characteristic of colour changes is still applicable but the colour sensitivity. The container must be well-sealed and made of a high enough gas barrier packing material.

Application:Associated with oxygen absorbers, the indicator is usually for testing purposes, it is adaptable to many applications such as tea industry, food industry, vegetables industry and so on.