Chem C3000 requires but does not contain Sodium Hydroxide (4%), Hydrochloric Acid (7%) and Silver Nitrate (1%). We've mixed up the chemicals you need in the percentages required for the kit.
These chemicals are not strong, but should be used with caution and according to all advisories for handling & disposal included in your C3000 manual.
C3000 Supplementary Chemical Set (required for the kit but not included): 2 ounces each of Hydrochloric Acid, Sodium Hydroxide and Silver Nitrate, pre-mixed to the proper percentage. Set of 3: $10.00