The bleach bath converts metallic silver on film back to a silver halide through an oxidation reaction. An iron solution is commonly used to accomplish this. Used C-41 RA bleach may contain up to three parts per million (ppm) silver.
Most developers for black and white film contain a small percentage of hydroquinone. These developers, if disposed as an unused product will be dangerous due to hydroquinone levels. However, hydroquinone does not show up in used developer in concentrations that are considered dangerous waste because it is consumed during use.
Fixer and Bleach-Fixer Solution
Fixer allows silver to dissolve out of the film and paper into the solution. As a result, used fixer and bleach-fixer contain high concentrations of silver, usually between 3,000 and 8,000 ppm. Because of these high silver levels, used fixer is a dangerous waste.
Free Household Hazardous Waste Disposal
If you are a resident of Clark County or one of its cities, you may dispose of unwanted household hazardous waste products at any of the following HHW collection programs. Business-generated hazardous waste will not be accepted.
Eligible senior and citizens with disabilities who are unable to transport HHW to a collection site or event may call (360) 397-6118 ext. 4352 to see if they qualify for a free home pick up.
Fixed Collection Facilities
Satellite Collection Events