If you re a screen printer looking for practical environmental management and pollution prevention information, this booklet is for you. Screen printers across the state regularly generate wastes that are of concern to the environment. Film developing, printing and cleanup operations in your shop generate wastes such as used fixer, waste ink, ink cleanup sludges and shop towels, not to mention a steady stream of air emissions from ink removers and spot degreasers. These wastes may pose solid waste, hazardous waste, water quality or air quality concerns.
Silver has a very high aquatic toxicity and accumulates in the tissue of aquatic organisms.
Because of concerns with silver, fixer is a state and federal hazardous waste. Many local sewer authorities have strict silver discharge limits. With thousands of businesses in Washington State generating used fixer, it s important that each one do their part to manage these wastes correctly and keep them out of the soils and waters of the state.