**Overview** HD-S1 Heavy Duty Step One is a powerful acid-based pre-soak engineered to dissolve severe inorganic buildup, oxidation, mineral deposits, and bonded road film on industrial fleets and heavily used equipment. This is the first stage in the heavy-duty two-step washing process and is designed for maximum cleaning power. **Key Benefits** - Aggressive cleaning action for severe inorganic soils and oxidation - Breaks down bonded film, mineral deposits, and weathered buildup - Prepares surfaces for the Step Two alkaline wash - Helps restore dull or neglected fleet surfaces - Performs extremely well with pressure washers and hot water units - Designed for industrial, commercial, and municipal fleets **Dilution Instructions** - General cleaning: 50 mL per 4 L - Normal soil: 100 mL per 4 L - Heavy soil: 200 mL per 4 L - Severe inorganic buildup: 500 mL per 4 L **Application / Use** 1. Apply bottom-to-top or evenly across all surfaces. 2. Do not allow the product to dry on the surface. 3. Follow immediately with HD-S2 Heavy Duty Step Two while the surface is still wet. 4. Rinse thoroughly using a pressure washer. **Ideal For** - Construction trucks and industrial equipment - Waste vehicles and municipal fleets - Tankers, transport trucks, and high-mileage units - Equipment with heavy oxidation and neglected finishes - Operations requiring strong restoration power **Professional Use Warning** HD-S1 is an acid-based industrial cleaner for trained professionals only. Avoid polished metals, chrome, or sensitive surfaces. Always wear proper PPE. **Safety & SDS** Use appropriate PPE when handling chemical products. SDS documents are available in our library.
Related
Related
Related
Related