Expression Systems Insect Cell Culture Media

We are pleased to offer Expression Systems LLC tried and tested range of insect cell culture media and reagents. We offer the popular serum-free ESF 921™ media in convenient 1 L bottles and can provide significant discounts for purchases of 3 x 1L, 5 x 1L, 10 x 1L and bulk (20L or above) orders. During our extensive in-house testing, we found that the ESF 921™ medium performed well in the culture of Sf21, Sf9 and a range of cells for protein production, and Sf21 and Sf9 cells for virus amplification. OET also offers a range of of Expression Systems supplementary reagents and additives designed to help improve virus infection and protein production. If you would like to discuss discounts for bulk orders or are interested in the custom media option available from Expression Systems,  please contact



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As you are aware the UK is due to leave the EU. Negotiations are still ongoing so it is yet unclear how this will affect trade going in and out of the UK. OET will be preparing for all possible outcomes as best we can to ensure that customer orders can still be fulfilled.

However, we recommend that if you know you will require OET products in the initial months following the  departure date, you should consider placing additional orders now to ensure you have sufficient kits and reagents if potential delays in shipping do arise. At present this applies more significantly to customers within the EU.

If you have any concerns or questions relating to this please do not hesitate to contact us.

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