Choosing a size
What does the cc rating on an oxygen absorber mean?
It is the volume of oxygen the sachet is intended to absorb. It is not the size of container it suits. A one-litre container full of air holds roughly 210cc of oxygen, because air is about 21% oxygen.
How many oxygen absorbers do I need?
As a conservative starting point, allow about 250cc of absorber capacity per litre of sealed container volume. See the oxygen absorber size guide for jars and pouches and the Mylar bag guide for bag sizes up to 20 litres.
Can I use two smaller sachets instead of one larger one?
Yes. The capacities add together, so two 500cc sachets give a combined nominal 1000cc. In a large bag, spread the sachets through the contents.
What size are the sachets?
| Size | Sachet (mm) | Weight per sachet |
|---|---|---|
| 20cc | 25 × 38 | 0.8–1.0 g |
| 30cc | 30 × 40 | 1.1–1.3 g |
| 50cc | 40 × 45 | 1.7–1.9 g |
| 100cc | 40 × 55 | 3.3–3.5 g |
| 200cc | 50 × 60 | 6.5–6.9 g |
| 300cc | 50 × 70 | 8.5–9.5 g |
| 400cc | 50 × 80 | 11–12 g |
| 500cc | 70 × 85 | 14–15 g |
| 1000cc | 70 × 110 | 28–30 g |
| 2000cc | 70 × 130 | 55–57 g |
Using oxygen absorbers
Do oxygen absorbers remove moisture?
No. Oxygen absorbers remove oxygen; desiccants such as silica gel or clay absorb moisture. They do different jobs. See oxygen absorber vs desiccant.
Which foods are suitable?
For home storage, use oxygen absorbers with suitably dry foods such as rice, flour, oats, grains, dried beans and pasta, packed in oxygen-barrier containers. Moist or semi-dry foods, including jerky and bakery goods, need a validated preservation process because removing oxygen can create conditions in which some dangerous bacteria grow.
What packaging should I use?
Use packaging that is a genuine oxygen barrier and can be sealed reliably, such as foil-laminate (Mylar) bags, suitable barrier pouches, or glass and metal containers with sound seals. An ordinary resealable plastic bag is not necessarily a barrier.
What should I do with unused sachets?
Open the pack only when your food and containers are ready, work promptly, then reseal unused sachets straight away in suitable oxygen-barrier packaging.
Can oxygen absorbers be reused?
No. Sachets are single-use. Do not open, eat, microwave or try to reactivate them, and keep them away from children and pets.
Why does my sealed bag look shrunken but not vacuum-packed?
The absorber removes oxygen, which is about a fifth of the air. Nitrogen, most of the remaining air, stays in the bag.
Ordering and delivery
Where do orders ship from?
Orders are picked and packed at our Melbourne warehouse, with an aim of 1–3 business days, and sent by Australia Post. PO Box delivery is available. There is no pickup. See Delivery.
Do you offer free shipping?
The site advertises free shipping on orders above $50. Check the shipping shown in your cart before you pay.
How can I pay?
See Secure payment for the payment methods available at checkout.
Can I buy in bulk?
Yes. Each size has several order quantities. For larger or repeat orders, see bulk and wholesale oxygen absorbers or contact us.
Who supplies OxySorb?
Wholesale Group International Pty Ltd, ABN 50 149 620 771. Read more about us, or book a one-hour packaging consultation for help with a commercial pack.