Wash in soap and warm water. The final color depends on the time in the dye bath, concentration of the dye and temperature of the dye bath. For professional silk painters who steam set, liquid acid dyes provide and brightest, most intense colors in the world. Stir until dissolved. This will yield a very concentrated dye solution.
Most colors require further dilution.
Some colors are difficult to dissolve such as 605 and 618, but most are easily dissolved. Start by adding 4 oz. Keep in mind that the color intensity really develops in the steam setting process. Most colors will remain stable in solution for a long period of time. However, some colors will fall out of solution upon cooling or from sitting for a matter of weeks.