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Frequently Asked Questions

Do you offer work placements or internships?

We don’t have an internship programme at the moment but do offer occasional work placements to university students who are interested in animal-free test methods. If you would like to apply, please send your CV and a covering email explaining what our values mean to you to info@x-cellr8.com.

What happens if I can’t provide a molecular weight for my test item?

This request only applies to the DPRA test. If you aren’t able to provide the molecular weight, you can detail the list of constituents with percentage compositions and we can approximate it using the guidance in the Test Guideline. As a last resort, the test item may be run neat (liquids) or dissolved at the highest soluble concentration (solids) then combined at a 1:10 or 1:50 ratio using the Cysteine and Lysine containing peptides respectively.

Can we interview someone from XCellR8 for a project we are working on?

Please send any media or study requests to info@x-cellr8.com for the attention of our Marketing Director, Susie Lee-Kilgariff.

Why do you need to know the purity of my test item?

Noting the purity of the item being tested is part of our GLP (Good Laboratory Practice) compliance. For certain tests, it allows us to ensure the correct concentration is being tested. It’s also another piece of key information that we check to make sure we have the right test item, and you get the right result.

How much of my product or material will you need to start a study?

10 ml if it’s a liquid or 10g if it’s a solid. This makes sure we’ve got enough of the item if you order more than one test. Please ensure your samples are clearly labelled, and match any documentation you send with them. If you don’t have this amount of your test item available, please call us to discuss your options.

What do you need from me to start a test?

Firstly, we ask you to approve our quote and send us a PO number. We’ll then ask you to fill in an information sheet about your product or ingredient which includes some information such as the lot number, expiry date, purity and storage conditions required. We’ll ask for a description of the item (its name, colour and physical state) which will need to match the sample you supply. For some tests, we’ll also ask you to supply the molecular weight. If you have a Material Safety Data Sheet (MSDS), please also send us that. And last but definitely not least, we’ll need a sample of the item(s) you want to test sent to our laboratory in Cheshire, UK. 10ml if it’s a liquid or 10g if it’s a solid.