[Paul Evans]

Hi All

Is it the food grade stuff everyone uses

http://www.ebay.co.uk/itm/500g-Sodium-Metabisulphite-food-grade-high-purity-/320732894619?pt=UK_BOI_Medical_Lab_Equipment_Lab_Supplies_ET&hash=item4aad2b959b#ht_3526wt_1139

Or is there something else. Gonna get me self some for a practise at home.

Cheers Paul

[AshWhite]

That's the one. Just to warn you, it STINKS! It's like a 100 stray dogs took turns peeing on your carpet, not pleasant!

[Paul Evans]

Cheers Ash

[PaulKing]

someone must have worked it out is it that much cheaper to buy it in that coffee stain remover form chemspec or such?

[Buckland]

In the listing on ebay it says:

Sodium metabisulfite exists in both food-grade and non-food-grade forms. The non-food-grade form is an industrial bleaching and reducing agent; it is also used to remove excess chlorine from drinking water and as a photographic developing and fixing bath agent.

Pure-domestic-chemistry are offering food grade so it would appear from this it is not the real mccoy - is there a chemist in da house...

no not presently but I have a feeling one will be along shortly

[Paul Evans]

So

Is it the food grade sod met 

Or the non food grade sod met. 

That the CCs are using

Cheers Paul

[Doug Holloway]

Hi guys

Food grade will be more pure which won't make any difference to us but will be more expensive.

remember adding citric acid will speed up reaction.

Cheers

Doug

[Paul Evans]

Cheers Doug,

Got some on order.

Paul