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A selection of mordants for use with natural dyes to vary the final colour results when dyeing.
There is no substantiated evidence of a causal link between exposure to these dyes and any chronic or fatal illnesses. Both the acid and fibre reactive dye families have a considerable track record, of use in industry in considerable quantities and in a less well controlled environment in the crafts.
Sensible precautions to be taken when handling dyes and chemicals, particularly as powders.
Before dyeing, it is important to check whether the item is 'Prepared for Dyeing' (PFD) or requires scouring to remove any grease, oil or starch. Run a few droplets of cold water onto the fabric. If they soak in quickly, no scour is necessary. To remove starches, size and oils, add 5mls of Synthrapol (a non-ionic detergent) along with 2-3 litres of water for each 100gms of material. Stir gently over a 15 min period, and then rinse thoroughly in warm water. It is possible to use household detergent, but the alkaline residue may affect the final colour or wash fastness.
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George Weil & Sons is a limited company registered in England and Wales. Registered number: 00321890.
Registered office: Old Portsmouth Road, Peasmarsh, Guildford, GU3 1LZ