Germa-Tech Premium 2K Reducer is a high quality reducer specially developed for primer, basecoat & top coats. Available with fast, standard, slow, extra slow and ultra slow drying speeds…
| Notes | No addition ratio is stated on this sheet - the addition rate comes from the TDS of the product being reduced. 'To reduce the application viscosity, increase the smoothness of paint film. Good solubility. Standard for 1K basecoat and 2K products, with medium evaporation speed, suitable for spot repair or application between 15-25˚C.' Directions For Use: 'In high heat (over 30 °C ambient) or high humidity, 10-30% Retarder Solvent can be added.' |
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No drying schedule is printed on the source sheet.
| Density | approx. 0.84-0.90 (relative density, water = 1) — estimated from the Safety Data Sheet; not separately measured |
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| Equipment cleaning | Clean guns and equipment immediately after use with gun wash or a solvent cleaner. Never let mixed 2K product start to cure in the gun — once it kicks, no solvent will save it. |
| Storage life (unopened) | Up to 36 months unopened — SUBJECT TO correct storage: a cool, dry place below 20 °C, out of direct sun. Heat is the biggest killer of paint in the tin: stock stored or transported in hot vehicles, tin sheds, shipping containers or direct sunlight loses life fast whatever the date on the tin, and that is where most premature failures start. Storage life is an optimal guide, not a promise that survives a hot shed. |
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| Once the seal is broken | Once the seal is broken the clock starts, and how you store it sets the pace. This product: 90 days once the seal is broken, resealed tight — then discard. |
| Storage | Store indoors in a cool, dry place below 20 °C, out of direct sunlight, with the lid sealed tight after every use. Never store or transport in heat — not in a tin shed, a shipping container, a hot van or a sunlit rack. |
| Pack sizes | 1LT (GP5108-1 / GP5108-2 slow) · 5LT (GP5108 / GP5108SL slow / GP5108-5XS / GP5108-5XXS) · 20LT (GP5107) |
| CODE | WHAT IT IS | PACK SIZE |
|---|---|---|
| GP5107 | Product · Standard Thinner (20lt | 20LT |
| GP5108 | Product · Standard Thinner (5lt | 5LT |
| GP5108-1 | Product · Standard Thinner (1lt | 1LT |
| GP5108SL | Product · Slow Thinner (5lt | 5LT |
| GP5108-2 | Product · Slow Thinner (1lt | 1LT |
| GP5108-5XS | Product · Extra Slow (5LT | 5LT |
| GP5108-5XXS | Product · Extra Extra Slow (5LT | 5LT |
This is an ancillary — it supports the steps above rather than forming a layer of its own.
Standard inclusions are controlled: each note applies to every product in its named set, enforced at build. They cannot drift onto some sheets and off others.
| DEFECT | WHAT YOU SEE | WHY IT HAPPENED | FIX |
|---|---|---|---|
Solvent pop | small open craters or burst blisters through the film, usually only obvious after the bake or once the panel has cooled | solvent trapped under a skinned-over film - flash time cut short, coats laid on too heavy, too many coats, or the panel put into the bake before the final flash was done | let the film cure right out, then sand the popped area back to a sound film and refinish; if it has gone through to the undercoat, sand back to the undercoat, re-prime and refinish |
Dry spray | a rough, dusty, low-gloss patch - usually on the far side of a long panel or around the edge of a blend | the atomised paint dries before it lands - gun too far off, air pressure too high, reducer too fast, or the shop running hot; on big panels the mist dries in flight | on 2K solids and clear, lay Thinner SRA over the overspray area straight after the coat to melt it in; once cured, sand the dry area back and refinish |
Orange peel | an even, bumpy, dimpled surface like the skin of an orange - the film has not levelled out | material too thick or under-reduced for the conditions, air pressure too low, fan too wide, gun held too far off, reducer or hardener too fast for the day, or shop temperature too high | while still wet, an extra full wet coat with a proper flash will flow it out; once cured, de-nib P1500 through P3000 and polish, or sand and respray if it is heavy |
Blushing | a milky, hazy or white cast through the film, worst in hot or humid weather and on fast-drying work | solvent flashing off so fast it chills the film and pulls moisture out of the air into it - hot shop, high humidity, or a reducer or hardener that is too fast for the day | while wet, a coat with retarder in it will often pull it back; once cured, sand the affected film back and refinish with the correct reducer speed |
Runs and sags | the wet film slides down the panel and leaves a drip, tear or curtain, worst on vertical panels and around edges | too much material in one coat, gun too close or moved too slowly, air pressure too low, flash between coats skipped, reducer or hardener too slow, or a cold panel | if it is still wet, do not touch it - let it cure fully, block the run flat with P1500 working to P3000, then polish; heavy runs get sanded flat and resprayed |
Die-back and gloss loss | the finish looks right coming out of the booth and then dulls off over the next hours or days | polished or handled before the film had cured, film built too heavy, flash between coats too short, wrong reducer or hardener for conditions, or poor booth air movement | let it cure, then compound and polish; if the gloss will not come up, sand and respray |
| VERSION | DATE | CHANGE |
|---|---|---|
| v2.3 | 02.09.2026 | Reissued on the current Germa-Tech technical data sheet format. New in this issue: a quick-reference card, the hardener and reducer selection gauge, the coating thickness stack, the recoat-window recovery procedure, and a product-specific troubleshooting table. Bake schedules are now stated as metal temperature. |
This sheet is read together with the GERMA-TECH APPLICATION STANDARD (terms, conditions of application and warranty) and the Coating Thickness Guide — both hosted with the data sheets and at germatech.com.au. Warranty is conditional on correct use of the product as described on this sheet, including the sanding steps and grits in its sanding guide, within the Germa-Tech system. The information in this data sheet is given in good faith and is based on laboratory and field testing. Ampro Australia has no control over the conditions under which this product is used, so the end user must satisfy themselves that the product is suitable for the intended application and conditions. All times are quoted at 20 °C and 50% relative humidity unless stated otherwise. This sheet supersedes all previous issues.
