FastColours LLP How to Dissolve Dyes
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How to Dissolve Dyes.

The best way to use water soluble dyes is to make a solution.  Dyes can be messy to handle so it is recommended that you use disposable gloves, wear googles and use an area that can be easily cleaned.  If handling could be a concern, the granular dyes are recommended.

To make a solution:

  1. Weigh out the required quantity of dye
  2. Make a paste using cold water
  3. Add hot water to this paste whilst stirring
  4. Continue to stir until the dye is dissolved
  5. Allow to cool or add cold water
  6. The dye is now ready to use
  7. The stability of solutions are good provided they are kept in a cool place and not exposed to direct sunlight.

Note that the some of the dyes have varying solubility. ie. they can be very soluble at high temperatures but on cooling they can come out of solution.  Please refer to the table in Info:  Water-Soluble & Food Dyes  to ensure that you don't try to dissolve too much dye into insufficient water.

Please note that our dyes are extremely powerful and a small variation in weight can lead a big change in colour, especially when using small amounts and when using a mixture of 2 or more dyes.

It is recommended that the accuracy in weighing of the dye is to two decimal points
for small volumes and 1 decimal point for large volumes.

If you can only weigh to one decimal point and the volume is small, then it is better to make a concentrate solution.

A good starting point is a 1% solution (i.e. 10 g/l) and then add it by volume to your mix..  1 ml of this concentrate will contain 0.01 g/l, giving the 2 decimal point accuracy).

For blends, you can produce concentrates of each dye and then mix them in your specific ratio to have your own concentrate mixture.  This can the be added as a single component thus minimising any inaccuracies.