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| Commonly asked questions on the subject of using oxygen absorbers in food applications. |
| 9.My company uses both gas flushing and vacuum packaging. Why do we need to use OxyFree? |
By using OxyFree sachets, you can extend the shelf life of your food products much longer than gas flushing or vacuum packaging.
When an OxyFree sachet is used with proper packaging and sealing, it can bring the oxygen level down to reliably 0.1% or less in a matter of one or two days. With a high barrier packaging film it can maintain an oxygen free level (<0.01%) throughout the product¡¯s shelf life.
Such results are impossible to achieve with either gas flushing or vacuum packaging. First, there is always some residual oxygen (0.3-5% depends on methods and equipment) left in the food package. Second, during the storage of food, oxygen from the air can enter the food package increasing the oxygen level. Over time, the oxygen level continually rises inside of the package. Also, the increased oxygen level limits the shelf life that such methods can achieve. |
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| 10.How do you apply OxyFree sachets? |
Select the appropriate formula type and size of the OxyFree sachet. The food container material must be of a high oxygen barrier. Put the OxyFree sachet inside the food container and seal the container completely. |
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| 11.What lab test do you use to know the level of oxygen inside the package without piercing the package with oxygen testing instruments? |
First you should select the appropriate type and size of an absorber sachet. The container¡¯s material should have a high oxygen barrier. Put food and absorber inside the container together, including one oxygen indicator tablet and position this indicator in a way so that it is easily observed inside the container. When exposed to air, the oxygen indicator tablet will show blue. When the environment contains no oxygen (oxygen concentration< 0.1%), the tablet color will be in pink. When exposed to air (with oxygen) again, the color will change back to blue. Once the indicator is properly placed inside, seal the container completely. |
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| 12.How do you handle sachets after the master bag has been opened? |
Absorber packets are vacuum packed inside large master bags. If the master bag loses its vacuum sealing, the packets can possibly slip or move around. If you shake the bag and the packets freely move around in the package, please do not use the packets in this bag.
After opening a master bag, you should spread out the needed quantity of sachets in a tray for usage. Please do not expose the sachets to air for more than 30 minutes. The remaining sachets should be resealed in the master bag after removing air from the bag, or using a vacuum heat sealer to seal it closed. |
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