Novol 35856 Protect Hardener H5910 (1.0L) – The Acid-Etch Activator
The Novol H5910 is the mandatory reactive activator for Novol Protect 340 Wash Primer. This 1.0-litre unit contains the phosphoric acid and specialized solvents necessary to trigger the "etching" process, allowing the primer to chemically bond to smooth, non-porous metals.
Without this specific activator, the Wash Primer will not cure and will fail to adhere to the substrate.
The Perfect Mix: 1:1 Ratio
This system is designed for high-precision chemical balancing.
- Mixing Ratio: 1:1 (1 part Wash Primer : 1 part H5910 Hardener).
- Direct Match: This 1.0L hardener is the exact partner for the 1.0L tin of Protect 340 (37211), creating a total of 2.0 Litres of ready-to-spray material.
- No Thinner Needed: The 1:1 mixture naturally reaches the ideal spraying viscosity
Key Features & Benefits
- Chemical Etching: Contains active acid components that microscopically "bite" into the metal surface, neutralizing oxidation and creating a permanent bond.
- Total Metal Compatibility: Enables the Wash Primer to stick to Aluminum, Galvanized Steel, Zinc-coated Steel, and Stainless Steel.
- Anti-Corrosive Synergy: Works with the primer resins to create a thin, moisture-resistant barrier that prevents rust creep.
- Fast Processing: Contributes to a very rapid drying time, allowing you to overcoat with an acrylic filler in as little as 10–15 minutes.
- Excellent Stability: Once mixed, the product has a generous 12-hour pot life, allowing you to work on large projects throughout the day.
Expert Insight: H5910 is highly sensitive to moisture. Ensure the cap is wiped clean of any drips and tightened immediately after use. If the liquid becomes cloudy or contains crystals, it has been contaminated by humidity and should not be used.
