Clean Operation
Formulations designed for clean-running machining systems.
Water Diluted Machining Coolants
GTL & Vegetable Emulsions
Advanced base stocks. Application-focused performance.
Explore QualiChem GEOCOOL GTL-based semi-synthetics and EQO-PURE vegetable-derived micro-emulsions for cutting and grinding.
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Two formulation families
Choose around the material and operation.
GEOCOOL 860 and 890 use Gas-to-Liquid base stocks and dilute to milky-white coolants. EQO-PURE 450 and 451 use synthesized vegetable base stocks and form semi-translucent micro-emulsions.
Review the alloy, cutting severity, water quality, concentration and sump condition with QA. Both families offer options for central systems and individual sumps.
Tramp-Oil Rejection
Helps separate unwanted oil for removal from the sump.
Foam Control
Review water quality and operating conditions for the application.
Material Fit
Choose multi-metal performance or a fluid for severe alloy machining.
QualiChem Metalworking Fluids
GTL Emulsions
GEOCOOL combines GTL base stocks with multi-metal machining performance. The supplied sheets describe boron-free and chlorine-free formulas without formaldehyde-releasing biocides.
GTL-based multi-metal semi-synthetic
QualiChem GEOCOOL 860
A Gas-to-Liquid (GTL) based coolant for a broad range of applications and system sizes. Suitable for yellow metals, aluminum alloys, cast iron, carbon steel, stainless steel, heat-resistant alloys and most plastics. Designed for clean operation, low consumption, tramp-oil rejection and foam control in hard, soft and treated water.
Selection focus: Broad multi-metal machining requirements.
Typical dilution: Machining 6–12%; grinding 3–5%.
Concentration control: 1.3 × Brix reading.
Availability and pricingGTL-based multi-metal semi-synthetic
QualiChem GEOCOOL 890
A premium GTL-based coolant for difficult machining, including titanium, nickel alloys and aerospace aluminums. The sheet specifically identifies Ti-6Al-4V and Inconel 718. Supports machining, milling, turning, drilling, boring, threading and tapping, plus selected grinding and light-to-medium-duty broaching, forming and stamping.
Selection focus: Demanding alloys and aerospace machining.
Typical dilution: Machining 6–12%; grinding 3–5%.
Concentration control: 1.2 × Brix reading.
Availability and pricingQualiChem Metalworking Fluids
Vegetable Emulsions
EQO-PURE uses synthesized vegetable base stocks for machining lubricity with stable, clean-running micro-emulsions. The key distinction is 450’s chlorine-free additive approach versus 451’s chlorinated EP additive.
Vegetable-derived heavy-duty micro-emulsion
QualiChem EQO-PURE 450
A synthesized vegetable-base-stock cutting and grinding fluid for severe machining of aluminum and exotic alloys such as titanium, Hastelloy and Waspaloy. Suitable for central systems and individual sumps. Typical operations include boring, deep-hole drilling, gun drilling, reaming, roll forming, tapping and threading. Provides ferrous and non-ferrous corrosion protection without chlorine, sulfur or phosphorus EP additives.
Selection focus: Severe machining with a chlorine-free formulation.
Typical dilution: Machining 4–12%; grinding 3–5%.
Concentration control: Use supplied concentration table.
Availability and pricingVegetable-derived micro-emulsion with chlorinated EP
QualiChem EQO-PURE 451
A heavy-duty synthesized vegetable-base-stock fluid with a chlorinated extreme-pressure additive for the most rigorous machining. Intended for hardened steels, stainless steels and exotic alloys including titanium, Inconel, Hastelloy and Waspaloy. Non-staining to aluminum, with clean running, low-foam performance and tramp-oil rejection in central systems and individual sumps.
Selection focus: Most severe machining with chlorinated EP.
Typical dilution: Machining 4–12%; grinding 3–5%.
Concentration control: Use supplied concentration table.
Availability and pricingProduct comparison
Critical information at a glance.
| Product | Concentrate | Diluted appearance | pH at 5% | Machining | Grinding | Concentration measurement |
|---|---|---|---|---|---|---|
| QualiChem GEOCOOL 860 | Clear to slightly yellow | Milky white | 9.5 | 6–12% | 3–5% | 1.3 × Brix reading |
| QualiChem GEOCOOL 890 | Clear to slightly yellow | Milky white | 9.4 | 6–12% | 3–5% | 1.2 × Brix reading |
| QualiChem EQO-PURE 450 | Clear amber liquid | Semi-translucent | 8.8–9.2 | 4–12% | 3–5% | Use supplied concentration table |
| QualiChem EQO-PURE 451 | Amber liquid | Semi-translucent | 8.7–9.1 | 4–12% | 3–5% | Use supplied concentration table |
Typical values and recommended dilutions from the supplied QualiChem product data sheets, not specification limits. Confirm application recommendations with QA. The GEOCOOL sheets give an overall range of 3–12%.
Mixing & concentration control
Use the correct factor for the product.
When mixing by hand, always add concentrate to water. A correctly sized proportioner can provide consistent mixing. For GEOCOOL, avoid very hot or cold mixing water and review water quality and treatment with QA.
Calibrate the refractometer before measuring the mixture and follow its operating instructions. GEOCOOL concentration equals Brix reading × the product factor: 1.3 for GEOCOOL 860 and 1.2 for GEOCOOL 890. For example, a reading of 5 gives 6.5% for 860 or 6.0% for 890.
EQO-PURE 450 & 451 concentration table
Both supplied sheets use the following table, prepared with an Atago Master M refractometer and distilled water. Readings can vary with water and instrument; use product-specific guidance rather than borrowing a GEOCOOL factor.
| Actual concentration | 3% | 4% | 5% | 6% | 7% | 8% | 10% | 12% |
|---|---|---|---|---|---|---|---|---|
| Refractometer reading | 2.8 | 3.7 | 4.6 | 5.5 | 6.4 | 7.4 | 9.2 | 11.0 |
Technical support
Match the fluid to your machining needs.
Share your alloy, operation, tooling, water quality and current coolant. Contact QA at 1.877.877.6221 or info@qalube.com for selection and concentration guidance. Pails, drums and totes are available; confirm packaging and availability when requesting pricing.
Explore GEOCOOL and EQO-PURE.
Review the four products in our online store.