Knowledge
Kaiser Mixture, Synthetic Complete Drop-Out Mixture, (SC)
Saccharomyces Cerevisiae Drop-Out Supplements Synthetic Complete Amino Acid
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Ref.: Kaiser, C. et al., Methods in Yeast Genetics, Cold Spring harbour (New York : 1994).
Drop-Out supplements are based upon a standard mixture of Amino Acids, Vitamins and other components to supplement encountered auxothropies. In each of the Drop-Out mixtures provided by Formedium™ each of these components is provided except one to five supplements of interest, i.e. the “dropped out” supplements.
Drop-Out mixtures are often used in combination with Yeast Nitrogen Base without Amino Acids to test for auxothropies and transformants.
Each of the Drop-Out mixtures, without one or more essential nutrients, is useful for the selection of auxotrophic requirements and transformants.
Synthetic Complete Amino Acid supplements are available in 20 gram and 100 gram pack sizes. Please contact us if you would like to order or get a quotation for a larger pack size.
Please enquire about custom made formulations.
Why choose Formedium?
Bespoke culture 
solutions
Whether you’re using industry standard media or producing your own formulation, our technical team works closely with you to deliver a consistent, reliable and cost-effective solution.
Fast, reliable

fulfilment
With UK-based production, global distribution and streamlined processes, we’re able to respond quickly to urgent timelines without compromising on quality.
Certified 
Quality
We hold ISO 9001 certification and have ISO 14001 environmental accreditation. Every batch of powdered media and every ingredient is fully traceable.
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responsibility
We take sustainability seriously – from solar panels and rainwater collection at our facility to recyclable packaging and responsible procurement.
Testimonials
What our customers say
"Formedium provide not only excellent products but also a level of personal service that truly sets them apart. They take the time to understand their customers’ needs and consistently go above and beyond, all while maintaining a highly professional approach. I look forward to continuing to work with Formedium and the team for many years to come."
Michael Hannan
University of Dundee
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“Formedium's technical support assisted us to make ready-made Aspergillus medium, saving us countless hours in preparation and have consistency across experiments going forwards. Their cost-effectiveness impressed us so much that we've now switched all our medium consumables to them!”


Norman Van Rhijn
University of Manchester
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“Formedium has been a long-term supplier of media products to our fermentation facility. From day one, their product quality and customer service has been second to none. Impressively, their outstanding service has always been delivered alongside competitive pricing and a sense of that personal touch. Formedium have even formulated and packaged media, specifically for our needs, and their technical support has always been on hand when needed.”
Dr Shane Palmer
Cambridge Biomedical Campus
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