OXY-EYE Oxygen indicator

The self-adhesive oxygen indicator with the eye "Oxy-eye" turns pink below an oxygen concentration of 0.1% within 2-3 hours and turns over to above 0.5% oxygen within 3-15 minutes back to blue. According to the producer his procedure can be repeated at least 4 times, but we don't recommend to use it several times. Oxy-eye remains stable in the refrigerator for 6-12 months when stored in a low-oxygen environment. Thereafter, the color change is no longer reliable. If you do not use up all indicators at once, we recommend to dispose of the remaining ones. 

Due to it pressure-sensitive adhesive, Oxy-eye are not suitable for long-term storage.