The Oxoid CampyGen and CampyGen Compact are simple to use systems for the rapid generation of a microaerophilic environment necessary to cultivate Campylobacter species. Like the AnaeroGen, the CampyGen also requires no catalyst and no water activation steps. No dangerous gas is produced. The final atmosphere is reduced to 6% oxygen, and supplemented with 14% carbon dioxide which is ideal for growth of Campylobacter and other microaerophilic organisms.

A larger envelope for the larger 3.5 liter jar, one envelope is suitable for the large Oxoid 3.5L jar, or use two envelopes in the BBL GasPak 150 jar (7L).