Yeast Nitrogen Base without Amino Acids, without Ammonium sulphate and without Phosphate, supplemented with KCl

Name: Yeast Nitrogen Base without Amino Acids, without Ammonium sulphate and without Phosphate, supplemented with KCl
Brand: Formedium

Formedium

£235.6

We have not confirmed this price since it was first recorded. Check before buying.

The absence of phosphate (KH2PO4) provides the possibility to include alternative sources of phosphate, like P32 labeled components, or to select an optimal concentration of phosphate for certain yeast cell lines. By omitting Potassium DiHydrogen Phosphate (KH2PO4), not only Phosphate (PO4-3) but also Potassium (K ) is omitted. As a result yeasts are not only limited in Phosphate, but also in Potassium. This might cause problems in osmo-molarity and intercellular Potassium ion concentrations finally resulting in poor cell growth and low yields. To avoid this problem an extra 550 mg/l (7.35 mM)

Formedium's own words, read from their page.

Buy from FORMEDIUM LIMITEDPrice seen 2026-09-26. Not an affiliate link, we earn nothing from it.

Where this comes from

The part other shops don't tell you. Three separate questions, kept separate on purpose, each with its source.

UK company
Registered at Companies House as FORMEDIUM LIMITED, number 04351225. Checked 2026-08-29.
Means the business is a British legal entity, not a British-sounding name owned elsewhere. It says nothing about where anything is made.
UK operations
Not yet checked.
Means people employed here, or premises they actually work from. We keep this separate from the company badge because a registered office can be an accountant's spare room, and a company can be registered in Britain while everything it does happens somewhere else. Where we have not looked, we say so rather than assuming.
British-owned
No majority shareholding traced outside the UK. Companies House.
Read from the register of people with significant control, following the chain of holding companies. It does not gate anything: a firm can be made here and owned elsewhere, and that is worth telling you rather than hiding.
Where it is made
The maker doesn't say, so neither do we.
This is about the individual product, not the company. A British firm can sell things made abroad, which is normal and not a criticism. We would rather tell you which is which than average them into a score.

Yeast Nitrogen Base without Amino Acids, without Ammonium sulphate and without Phosphate, supplemented with KCl

Where this comes from

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