As you can see in the table, the type of fabric did make a difference. I use Kona White or Kona PFD every time I dye. Other Supplies Purchase powdered dyes and soda ash from Pro Chemical and Dye or Dharma Trading Company . Both companies also carry useful measuring devices and bottles for concentrated liquid dye as well as fabric. Purchase disposable plastic tumblers, salt, measuring tools, and plastic gloves from any local store.
Safety Be safe when dyeing fabric.
Use a good quality dust mask when mixing powdered dyes. Wear gloves at all times. Don't use any utensil that you use for dyeing for cooking ever again. Cover your work area and clean up spills. There are quite a few wonderful books out there about fabric dyeing.