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Biological parts washers are often promoted as a greener alternative to conventional solvent cleaning. However, their reliance on a living microbial system can introduce operational, hygiene and maintenance considerations that are worth understanding before choosing a parts cleaning method.
Biological or biodegradation fountains use microorganisms in a surfactant bath to break down grease and other organic contaminants. The process relies on a carefully maintained biological environment, including appropriate temperature and oxygen levels.
Because the system is biological, changes in temperature, power supply or contamination can affect the balance of the bath. Contaminants are not necessarily removed from the fluid; some remain in the bath and accumulate over time.
Safetykleen’s source article highlights studies reporting that introduced bacterial cultures can be displaced by microorganisms from the surrounding environment. It also reports fungal contamination and the potential generation of bioaerosols when compressed air is used to dry contaminated parts.
The exact composition and potential hazards of the microbial strains used may also not always be transparent, making risk assessment more difficult for health, safety and environmental teams.
Water-based parts cleaning solutions can provide a controlled alternative without relying on a living microbial bath. Safetykleen’s aqueous cleaning solutions are designed to be non-flammable and free from VOCs and microorganisms, with enclosed automatic and ultrasonic systems available for different applications.
The right cleaning method depends on the contaminants, components, required cleanliness and working environment. Evaluating the whole process — including operator exposure, fluid management, maintenance and waste — can help businesses choose a solution that is both effective and appropriate for their site.
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