Scientific products delivered with precision.
Get the tools your looking for, advice that makes sense, and none of the usual hold-ups. Just straightforward support from people who understand science and know what you need.
Our Suppliers
Having high quality products allows you to focus on what's important. That's why we carefully select the suppliers we work with and maintain excellent relationships with them to ensure that we only provide you with the best products and services.
Become a Caltag supplier. Contact us here.
Product Categories
The right tools to fuel your research and diagnostic needs, all in one place.
We partner with trusted suppliers to bring you a wide range of high-quality RUO, GMP and IVD reagents, from antibodies and assays to recombinant proteins, biological samples and molecular tools.
Simple sourcing, expert support, and a UK-based team ready to help.
Antibodies
Wide range of antibodies for a wide range of applications from a wide range of suppliers!
Assays and Kits
Immunoassay kits such as ELISAs but also PCR kits, cell-based assays, enzymatic activity assay kits and more!
Biological Samples
Primary Cells, Cell lines, skin and other tissues, as well as blood-derived products such as leukopaks and PBMCs.
DNA and RNA
A wide range of clones, viral vectors, transfection reagents, genome editing tools and more!
Proteins, Peptides and other Macromolecules
Recombinant proteins, cytokines, growth factors but also peptides and other biomolecules such as lipids!
Biochemicals, Buffers and Chemical Substrates
Inhibitors, activators, natural products, compound libraries, nanoparticles, buffers, agarose resins, adjuvants for vaccine development and more. You will also be able to find TransFix® here
Labware and Consumables
A selection of lab consumables such as cell culture plates and columns for column chromatography.
Special Offers
Sign up for our newsletter
Be the first to know about releases and industry news and insights.
We care about your data in our privacy policy.
Why Caltag?
At Caltag, we connect scientists with specialist life science reagents reliably and with expert support. Founded in 2001 and based in Buckingham, we support researchers in the UK and Ireland, across academia, pharma and biotech with a plethora of high-quality life science products.
But we do more than that. As the manufacturer of TransFix®, an IVD flow cytometry stabilisation reagent that is trusted worldwide, we understand the scientific, regulatory and logistical challenges our customers and suppliers face.
As an independent, employee-owned business, we take pride in being approachable, responsive, and easy to work with. Our team are always happy to assist with technical queries, aid in sourcing the correct product, and support with any logistical issues. No automated replies, no sales pressure, just a knowledgeable team bridging science and supply, removing barriers to scientific discovery.
We also hold all the necessary ethical documentation, are ISO 13485 certified & HTA Licensed, and maintain strict oversight of reagents entering and leaving our premises. In turn, not only can you trust the quality of our products, but the integrity of our service too.
Whether you’re sourcing a hard-to-find reagent or need guidance on the best tool for your work, we’re here to support your next step.
Catarina Pratas
UEA
Sonal Varsani
Achilles Therapeutics
BUPA Purchasing and Business Support Specialist
Dr S.Weidlich
University of Dundee
Simona Jogaudaite
Imperial College London
Dr Mona Shehata
Cambridge University
Dr Angela Sheerin
University of Brighton
Elliot Jokl
University of Manchester
University of Manchester