Novol N-Range Hard 90-300 – Standard Hardener for EPO 3000, 800ml
The Novol 90-300 is a specialized activator designed exclusively for the N-Range EPO Primer 3000 (N91136). This 800ml unit is the essential reactive component required to initiate the cross-linking of the epoxy resins.
Because the EPO 3000 system utilizes a 1:1 mixing ratio, this 800ml bottle is the exact volume needed to activate one 800ml tin of primer, creating a total of 1.6 litres of high-performance, waterproof coating.
Key Features & Benefits
- Precise 1:1 Chemical Balance: Engineered to react perfectly with the multifunctional resins in the EPO 3000, ensuring maximum density and moisture-sealing capabilities.
- Standard Cure Speed: Optimized for typical workshop temperatures (18°C – 22°C), providing a comfortable application window and excellent flow.
- Enhanced Anticorrosive Synergy: Contains active agents that work with the primer’s pigments to create a passivating layer on bare steel and aluminium.
- Superior Solvent Resistance: Once fully cured with this hardener, the epoxy becomes virtually immune to "lifting" or "frying" when aggressive basecoats are applied over it.
Professional Mixing & Application Tips
- The 1:1 Rule: Epoxies are highly sensitive to ratios; an incorrect mix will result in a coating that either stays "chewy" or fails to provide a waterproof seal.
- The Induction Period: This is critical. After mixing the primer and the 90-300 hardener, stir thoroughly and let the mixture sit for 10–15 minutes before pouring it into your spray gun. This allows the chemical "pre-reaction" to start, improving the final finish.
- Thinning for Sealer Use: If you are using the 1:1 mix as a non-sanding (wet-on-wet) sealer, add 10–20% Novol N65521 Epoxy Thinner to achieve the necessary flow.
- Storage: Keep the cap tight. Epoxy hardeners are moisture-sensitive. If the liquid becomes very dark or develops a thick "skin" in the bottle, it has likely been compromised by air exposure.
- Safety: While isocyanate-free, epoxy hardeners are chemically aggressive. Always wear appropriate PPE, including gloves and a respirator, during mixing and application.
Why Is the 90-300 Hardener Essential?
The EPO 3000 system is widely considered the "ultimate" in rust prevention. However, its performance is entirely dependent on the 90-300 activator. Using a standard acrylic or 4:1 epoxy hardener will result in a chemical failure. By using this dedicated 1:1 hardener, you ensure that your restoration is protected by a non-porous, industrial-grade armor.
