G FLUID™
Get more heat out of the loop you already have. G FLUID™ goes into your existing water-based coolant and helps it carry heat away faster.
Patent pending.
Heat transfer
Graphene improves heat transfer in your coolant, so the fluid carries more heat away.
Coolant loops
G FLUID™ is water-based and made for existing coolant loops. No redesign, no new hardware.
Handling and shipping
Not classified as hazardous under the Globally Harmonised System as adopted in Australia. Not a dangerous good for transport.
Graphene supply
We’re vertically integrated. We make our own graphene from methane gas and formulate our own graphene-enhanced products, so we control quality and supply.
Microbial reduction
Tested to EN 1276, G FLUID™ reduces microbial growth in your coolant loop, so systems stay cleaner for longer.
Our graphene cooling system: G FLUID™ + THERMAL-XR®
See how G FLUID™ and THERMAL-XR® work together across the cooling loop, pairing coolant-side heat transfer with surface-side thermal performance.
Cooling additive for data centre infrastructure
When your heat load climbs, your usual options get expensive fast – bigger pumps, more coils, another chiller. G FLUID™ gives you a simpler place to start. Add it to your water-based coolant and it gets better at moving heat – up to 20% faster – so you get more from the equipment you already run.
~20% faster heat transfer
Graphene improves heat transfer in your coolant, so the fluid carries more heat away.
Works with what you have
G FLUID™ is water-based and made for existing coolant loops. No redesign, no new hardware.
Safe to handle and ship
Not classified as hazardous under the Globally Harmonised System as adopted in Australia. Not a dangerous good for transport.
Made end to end by us
We’re vertically integrated. We make our own graphene from methane gas and formulate our own graphene-enhanced products, so we control quality and supply.
Visible leak detection
Black colour doubles as a visual dose and leak indicator, so you can spot issues at a glance.
Speak to GMG about G FLUID™
Talk to us about your data centre cooling, closed-loop systems, and whether G FLUID™ is a fit.
Where it fits
Designed for water-based cooling systems, including:
Data centre liquid cooling
Industrial process cooling loops
Electronics and power cooling
Closed water-based coolant systems
Vehicle radiator cooling systems
Technical specifications
Tested against untreated PG25 coolant
| Parameter | Test method / standard | PG25 baseline (current) | GMG G FLUID™ additive (result) |
|---|---|---|---|
| Base fluid type | — | 75% water + 25% propylene glycol | PG25 + 1% G FLUID™ |
| Colour | Visual assessment | — | Black – visual dose / leak indicator |
| Thermal conductivity (k) | ASTM D7896 (Transient Hot Wire) | 0.64 W/m·K | 0.69 W/m·K (7% improvement) |
| Heat transfer COEFFICIENT | Lab test using DI water | N/A | ~20% higher heat transfer coef. |
| Viscosity @ 40°C | ASTM D445 | ~1.5 cSt | ~1.5 cSt (comparable) |
| pH of solution | ASTM E70 | 6.5-7.5 | 6.5-7.5 |
| Flash point | ASTM D92/D93 | N/A (water-based) | N/A (water-based) |
| Graphene / nano loading | Gravimetric / TGA | N/A | 0.01% in final mix |
| Colloidal stability (24h) | Visual / centrifuge | N/A (no particles) | Stable – no visible agglomeration |
| Clogging risk | — | None (dissolved) | None (dissolved) |
| Loop applicability | — | Primary / Secondary | Both |
| Acute oral toxicity | OECD 423 or equiv.* | Low (food-grade PG) | Low (water-based system) |
| Long-term sedimentation (30 days / 6 months / 1 year) | Centrifugal test | N/A | Stable at 1790xG for 10 mins (@ 4000 rpm) |
ANTIMICROBIAL - EN 1276 tested
| Organism | Test standard | Microbial Reduction |
|---|---|---|
| Staphylococcus aureus (ATCC 6538) | EN 1276 | 84.2% |
| Escherichia coli (ATCC 10538) | EN 1276 | 60.2% |
| Pseudomonas aeruginosa (ATCC 15442) | EN 1276 | 87.4% |
| Enterococcus hirae (ATCC 10541) | EN 1276 | 50.1% |
| Microbacterium sp. | EN 1276 | 50.0% |
| Legionella pneumophila bactericidal activity | EN 1276 | 50.0% |
How much do you need?
Dose rate is 1% by volume. Shake well before use – settling may occur. One bottle treats a lot of loop.
| Cooling system volume | 5 L | 15 L | 25 L | 50 L | 75 L | 100 L |
|---|---|---|---|---|---|---|
| G FLUID™ dose | 50 ml | 150 ml | 250 ml | 500 ml | 750 ml | 1000 ml |
Application steps
From bottle to loop in under a minute
