Table of Contents

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

  1. Prepare a working solution; either from ready-mixed powder of mix from scratch (see above).
  2. 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.