MIXING RATIOS The degree of softness/density is determined by Therm-O-Flex® Pink's powder to liquid ratio by volume. For the average sized denture use the following ratios: Firm: 20 cc Powder to 9 cc Liquid Soft: 20 cc Powder to 12 cc Liquid Softest: 20 cc Powder to 15 cc Liquid Higher powder to liquid ratios […]