Biocides & Preservatives
- Broad-Spectrum Bactericides
- Dual-Action Bactericide/Fungicide
- Targeted Fungicides
- System Cleaners
Inhibitors
- Corrosion & Rust Inhibitors
- Oxidation Inhibitors
Types & Application Guidelines
- Broad-Spectrum Bactericides
- Dual-Action Bactericide/Fungicide
- Targeted Fungicides
- System Cleaners
Broad-Spectrum Bactericides
- Function: Controls bacterial contamination in emulsions
- Dosage: 0.01% – 0.025%
- Usage Tips:
- Regular microbial testing (e.g., dip-slides)
- Add during fluid makeup or maintenance
Dual-Action Bactericide/Fungicide
- Function: Protects against bacteria and fungi
- Dosage: 0.1% – 0.2%
- Usage Tips:
- Best for systems with mixed contamination
- Use with preventive treatment schedules
Targeted Fungicides
- Function: Eliminates fungi and yeasts
- Dosage: 0.03% – 0.06%
- Usage Tips:
- Recommended for humid environments
- Monitor growth trends to adjust frequency
System Cleaners
- Type: Biocidal cleaner and disinfectant
- Application Areas:
- Centralized coolant systems
- Lathes, mills, machining centers
- Concentration: 2–3% in used fluid
- Functions:
- Removes sludge, microbial residues, and biofilm
- Prepares system for new fluid or emulsion
- Benefit: Prevents cross-contamination and enhances fluid performance
Inhibitors in Metalworking Fluids
Inhibitors protect metals and fluid systems from internal and external chemical threats, mainly corrosion, rust, and oxidation.
- Corrosion & Rust Inhibitors
- Oxidation Inhibitors
Corrosion & Rust Inhibitors
- Form a barrier to block moisture and chemicals
- Common Chemistries:
- Amine-based (for water-based MWFs)
- Phosphates/Organic acids (for semi-synthetics)
- Chlorides/Sulfonates (for neat oils)
Oxidation Inhibitors
- Prevent breakdown of oils in high heat/pressure
- Types:
- Phenolic antioxidants (scavenge free radicals)
- Amines & Sulfides (stabilize fluid molecules)
Types of Biocidal Compounds
| Biocide Type | Target | Application Notes |
|---|---|---|
| Formaldehyde-releasing | Bacteria, fungi | Gradual release; effective in water-soluble fluids |
| Isothiazolinones | Broad-spectrum | Widely used, effective at low concentrations |
| Glutaraldehyde | Bacteria, fungi, spores | Fast-acting; suitable for heavily contaminated systems |
| Phenolic compounds (e.g., 2-phenylphenol) | Bacteria, fungi | High-load systems; stable under various conditions |
Best Practices for Application
- Regular microbial testing (dip-slide, ATP test)
- PH and concentration monitoring
- Scheduled system cleanouts using products like CLEAN S SUPER
- Operator training on safe and accurate handling
- Avoid underdosing to reduce resistance development
- Ensure compatibility with other formulation components
Key Benefits of Biocides & Inhibitors
| Benefit | Description |
|---|---|
| Extended Fluid Life | Reduced degradation through microbial or oxidative mechanisms |
| Improved System Hygiene | Less biofilm, sludge, and harmful emissions |
| Equipment Protection | Minimized rust and corrosion on machine parts |
| Enhanced Operational Efficiency | Stable emulsion properties maintain cutting, cooling, and lubricating function |
| Cost Savings | Fewer fluid changes and equipment breakdowns |
| Workplace Safety | Reduced microbial exposure for workers |
Industrial Applications
- Metalworking (cutting, grinding, turning, milling)
- Sheet metal processing and forming
- Automotive part production and maintenance
- Centralized coolant systems
- Glassware manufacturing (shearing operations)
- Fluid management and recycling systems
Auxiliary chemicals like biocides and inhibitors are indispensable in modern metalworking operations. They enable fluid longevity, control microbial contamination, and protect both equipment and personnel. With proper use and monitoring, they not only maintain fluid integrity but also drive cost efficiency, safety, and sustainable production practices. This comprehensive suite of products supports industries operating under continuous, high-demand conditions—ensuring metalworking processes remain precise, hygienic, and productive.