{"product_id":"heavy-duty-step-one","title":"HD-S1 Heavy Duty Step One – Industrial Acid Pre-Soak \u0026 Inorganic Soil Remover","description":"\u003cp\u003e**Overview**  \u003cbr\u003eHD-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.\u003c\/p\u003e\n\u003cp\u003e**Key Benefits**  \u003cbr\u003e- Aggressive cleaning action for severe inorganic soils and oxidation  \u003cbr\u003e- Breaks down bonded film, mineral deposits, and weathered buildup  \u003cbr\u003e- Prepares surfaces for the Step Two alkaline wash  \u003cbr\u003e- Helps restore dull or neglected fleet surfaces  \u003cbr\u003e- Performs extremely well with pressure washers and hot water units  \u003cbr\u003e- Designed for industrial, commercial, and municipal fleets  \u003c\/p\u003e\n\u003cp\u003e**Dilution Instructions**  \u003cbr\u003e- General cleaning: 50 mL per 4 L  \u003cbr\u003e- Normal soil: 100 mL per 4 L  \u003cbr\u003e- Heavy soil: 200 mL per 4 L  \u003cbr\u003e- Severe inorganic buildup: 500 mL per 4 L  \u003c\/p\u003e\n\u003cp\u003e**Application \/ Use**  \u003cbr\u003e1. Apply bottom-to-top or evenly across all surfaces.  \u003cbr\u003e2. Do not allow the product to dry on the surface.  \u003cbr\u003e3. Follow immediately with HD-S2 Heavy Duty Step Two while the surface is still wet.  \u003cbr\u003e4. Rinse thoroughly using a pressure washer.\u003c\/p\u003e\n\u003cp\u003e**Ideal For**  \u003cbr\u003e- Construction trucks and industrial equipment  \u003cbr\u003e- Waste vehicles and municipal fleets  \u003cbr\u003e- Tankers, transport trucks, and high-mileage units  \u003cbr\u003e- Equipment with heavy oxidation and neglected finishes  \u003cbr\u003e- Operations requiring strong restoration power  \u003c\/p\u003e\n\u003cp\u003e**Professional Use Warning**  \u003cbr\u003eHD-S1 is an acid-based industrial cleaner for trained professionals only.  \u003cbr\u003eAvoid polished metals, chrome, or sensitive surfaces. Always wear proper PPE.\u003c\/p\u003e\n\u003cp\u003e**Safety \u0026amp; SDS**  \u003cbr\u003eUse appropriate PPE when handling chemical products. \u003ca href=\"https:\/\/canadawashchemicals.com\/pages\/sds-library\" title=\"SDS\"\u003eSDS\u003c\/a\u003e documents are available in our library.\u003cbr\u003e\u003c\/p\u003e","brand":"Canada Wash Chemicals","offers":[{"title":"4L","offer_id":52283041480888,"sku":"HD-S1-4L","price":44.23,"currency_code":"CAD","in_stock":true},{"title":"20L","offer_id":52283041513656,"sku":"HD-S1-20L","price":172.09,"currency_code":"CAD","in_stock":true},{"title":"205L","offer_id":52283041546424,"sku":"HD-S1-205L","price":900.0,"currency_code":"CAD","in_stock":true},{"title":"1000L","offer_id":52283041579192,"sku":"HD-S1-1000L","price":2666.67,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/8862\/2776\/files\/HD-S1-4L.png?v=1763418911","url":"https:\/\/canadawashchemicals.com\/products\/heavy-duty-step-one","provider":"Canada Wash Chemicals ","version":"1.0","type":"link"}