Understanding the cost, compliance and operational drivers behind co-solvent replacement.
For many electronics manufacturers, co-solvent cleaning has been a trusted method for removing flux residues, oils and particulate contamination from complex assemblies.
It remains a proven process.
However, rising solvent costs, increasing environmental pressures and changing regulations are prompting manufacturers to ask an important question:
Is it still the most cost-effective way to achieve the required cleaning standard?
No – many modern cleaning technologies can now deliver comparable cleanliness levels while reducing operating costs and improving process efficiency.
Why Manufacturers Are Re-Evaluating Co-Solvent Cleaning
The biggest challenge is often no longer cleaning performance. It is cost.
Older open-top vapour degreasing systems can lose significant volumes of solvent through fugitive emissions.
Combined with the high cost of fluorinated solvents, this can create a substantial ongoing expense.
Manufacturers must also consider evolving environmental requirements, workplace considerations and increasing demands for process efficiency.
At the same time, electronic assemblies are becoming more complex and cleanliness specifications more demanding.
The challenge is not simply finding a replacement chemistry. It is selecting the right technology and process for the application.
Key Drivers for Change:
- Rising operating costs associated with fluorinated solvents.
- Increasing environmental and emissions requirements.
- More demanding cleanliness standards.
- Pressure to improve efficiency and reduce waste.
- The need to future-proof production against regulatory and supply chain changes.
Evaluating the Technology Options
There is no universal replacement for co-solvent cleaning. The best solution depends on the application, cleanliness requirements and production goals.
Three proven alternatives dominate the market:
Modified Alcohol (Hermetically Sealed): Vacuum-sealed solvent performance. Best for complex geometries and blind holes. This means emissions are virtually eliminated, which results in significantly lower operating costs.
Aqueous Spray-in-Air: Combination of detergents, temperature, and high-pressure mechanical action. This means a flexible, easily integrated line, which results in reduced consumable costs versus fluorinated solvents.
Multi-Stage Aqueous: Dedicated, isolated cleaning, rinsing, and drying stages. This offers process control and repeatable, ultra-low contamination levels for high-reliability applications.
The Business Case for Change
A successful transition can deliver:
- Lower total cost of ownership.
- Reduced consumable and operating costs.
- Improved process efficiency.
- Reduced environmental impact.
- Simplified compliance.
- Greater control over emissions and workplace exposure considerations.
- Reliable, repeatable cleaning performance.
The Importance of Process Selection
The most successful replacement projects begin with a detailed assessment of the application, supported by laboratory trials and technical evaluation.
The goal is not simply to replace an existing process. It is to identify the technology that delivers the required cleanliness standard at the lowest long-term operating cost.
Ready to Protect Your Production?
Legacy co-solvent systems are a financial and a regulatory liability. Upgrading your process isn’t about buying new equipment or chemistry, it is about engineered risk mitigation.
Schedule a Technical Consultation with Fraser Technologies that guarantees compliance, slashes consumption and waste – ensuring product reliability.
Get in Touch
As experts in the field, Fraser Technologies have a deep understanding of the challenges and opportunities facing our clients’ industries and sectors. Our insights and independent recommendations are based on over 55 years experience, and rigorous analysis of the options available to you.
