SODA ASH ~ To change colour (PH indicator) and scouring cellulose fibres

No natural Dye Studio can do without Soda Ash. It may be used in small amounts to alter PH or used for scouring cellulose fibres. Soda Ash is alkaline and used to increase the PH in a dye bath as well as in an Indigo Vat. It also brightens yellows, especially Reseda and Sage.

Instructions:

In general Soda Ash can be dissolved in the  hot dye bath at 3-10%. It helps to increase the PH of the bath.

CREAM OF TARTAR ~ To change colour (PH indicator) and soften fibre

Cream of Tartar, also known as potassium bitartrate, is produced by fermenting grape juice. It is used to acidify the dye bath to effect a colour change, and in mordanting to soften wool fibers as well as slowing down the mordant uptake in a hot mordant bath.

Instructions:

In general Cream of tartar can be dissolved in the dye bath. It helps to lower the PH of the bath.
PH of Cream of tartar is 5.

Tartaric Acid, a byproduct of wine making, is a stronger alternative to Citric Acid. It is commonly used in natural dyeing to lower the pH to 1+ and intensify and brighten cochineal reds. Additionally, it serves as an antioxidant (E334) and is naturally present in grapes and bananas.

A small amount of Citric Acid can make a big difference in adjusting the PH levels of various substances. It falls between lemon juice and Tartaric Acid in terms of strength and is a valuable tool in achieving desired levels of acidity in natural Dyeing.