My advice would be to follow that of A.K Best. He first makes a ":working"
solution in which he dissolves the whole amount of dye ( or a known amount)
in a cup or two of water. This is the working solution. Then, he takes this
and uses it as liquid dye with 1-2 TBS to a standard 2 cups of water with
vinegar and salt. ( do this with RIT dye..mix the box in 250 cc of water. (I
get the bottles with the tight rubber caps that anesthesia agents come in).
Using this as my working solution, my standard amount of dye is 1 TBS of the
working solution to 1 tbs vinegar and 1 tsp salt and 2 cups of water. This
will immerse a whole neck or saddle in a Rubbermaid long shoe box container.
Then I watch and see how it works..heating the solution in the microwave and
removing the neck/saddle each time I reheat the dye. It usually takes over
night for a deep dark dye and 2 -4 hours for a lighter one. HOpe this helps.
Joyce