|Ferric Ammonium Citrate||17||g|
|Hydrochloric Acid (concentrated)||40||ml|
|Hydrochloric Acid (concentrated)||10||ml|
|Mixing Instructions: Add chemicals in specified sequence. Always add Hydrochloric Acid to the water, never add water to acid. Do not add Hydrochloric Acid to Solution C until immediately before use. Prepare all solutions within 24 hours of use.|
|Dilution: Use undiluted.|
|Usage: Prints should be darker and softer than normal, approximately 25% overexposed and on one grade softer, fully fixed, thoroughly washed and dried. Soak print in cold water until limp, then place in Solution A until bleached (typically about 60 secs or less). Transfer immediately to running water and wash for at least 30 mins. Place bleached print in Solution B for 45-60 secs until deepest shadows are toned. Wash print briefly (about 4-6 mins). Avoid overwashing or alkaline water as either will weaken the blue tone. Acidify wash water with small amount of acetic acid if required. Immerse blue-toned prints in Solution C until green tone is sufficiently strong (typically about 30 secs). Wash 20-30 mins in neutral or acidied water. Dry without heat.|
NotesDue to risk by inhalation, Solution C must be mixed and used in a well-ventilated space, preferably next to an open window or exhaust fan.
WARNING: Hydrochloric Acid is hazardous. Wear gloves at all time to avoid skin contact. Ensure respiratory safety when handling.