====== Wash Aid (HCA) ====== Hypo Clear Agent (HCA) to accelerate the removal of fixer salts and decrease washing times. ===== Preparations ===== ==== Kodak HCA ==== To mix from pre-mixed powder (provided by Kodak) **Kodak HCA**\\ To prepare working solution from powder. | Kodak HCA, | 26.5 gr | | Water, | to make 1000ml | Note: it is not recommended by Kodak to mix parts of the bag of powder, but this practice seems to work fine. ==== Hypo Clearing Agent ==== Mix your own HCA from raw chemicals. **Hypo Clearing Agent -- stock** | Water (@52°C) | 750 ml | | Sodiumsulfite | 200 gr | | Sodiumbisulfite | 50 gr | | Water | to make 1000ml | Note: The sodiumbisulfite is to lower pH and prevent emulsion softening; may be excluded if the intended use is to treat prints.\\ To make a working solution, dilute stock solution 1+9. ===== Instructions for use ===== - Prepare a working solution; either from ready-mixed powder of mix from scratch (see above). - Pre-rinse, treat in HCA and then make a final wash as specified below (minimum). ^ ^ Pre-rinse ^ HCA ^ Final wash ^ |**Film** | 1 min | 1-2 min | 5 min | |**Print** | 1 min | 3 min | 20 min | ==== Capacity ==== Capacity is approx 35 sheets of paper (24x30cm) per liter working solution. ===== Notes ===== This is the place to write down notes, tips etc.\\