One gallon of concentrate makes up to 21 gallons diluted, and that’s the math that matters on a job site. Simple Green’s industrial-strength formula delivers legitimate cleaning power while maintaining 0 g/L VOC content — critical when you’re working in enclosed spaces or around occupied buildings.
The lemon-scented version solves the industrial cleaner smell problem without sacrificing performance. pH runs 8.5-9.5 (mildly alkaline), strong enough to cut through grease but not so caustic it’ll damage surfaces or require special handling. Non-flammable with a flash point above 212°F means you can store it anywhere on site without worrying about fire codes.
Dilution Economics and Real-World Use
The concentration flexibility sets this apart from ready-to-use cleaners. Heavy cleaning calls for full strength up to 1:10 dilution for thick grease, oil, carbon, and porous surfaces. Most construction cleanup lands in the 1:10 to 1:30 range for metal-working fluids, dirt, grime, and food residue. Daily maintenance? 1:30+ dilution handles dust, particulates, and light oils.
At 8.34-8.42 pounds per gallon, it’s essentially the weight of water — no surprise given its 100% water solubility. That matters when you’re hauling cleaning supplies up scaffolding or loading trucks for remote sites. The concentrated formula means fewer trips to resupply.
For pressure washers and steam cleaners, run 1:20 to 1:30 dilution. The formula won’t foam excessively in mechanical systems, and the boiling point of 213.8°F handles heated pressure washers without breaking down — useful for Montana winters when hot water is the only thing that cuts through frozen grime.
Safety Specs That Actually Matter
NFPA ratings all zeros — Health: 0, Flammability: 0, Stability: 0. That’s as safe as industrial cleaners get. Non-hazardous under OSHA HCS 2012 means no special training requirements for crews, no PPE mandates beyond basic sense.
The orally non-toxic and biodegradable formula matters for Montana’s septic-dependent rural properties. Won’t kill the bacteria in septic systems, won’t poison groundwater if spilled. U.S. EPA Safer Choice Certified backs up the safety claims with third-party verification.
Free of butyl, solvents, and phosphates eliminates the harsh chemical smell that drives workers off job sites. The lemon scent is added fragrance, not masking agent — the base formula doesn’t stink to begin with.
Material Compatibility
Safe on stainless steel, metals, plastic, wood, fabric, carpet, concrete, and finished floors. That’s a contractor’s entire material list covered. The non-corrosive and non-abrasive formula won’t etch aluminum window frames, won’t cloud acrylic fixtures, won’t strip floor finishes.
Avoid highly sensitive electronic components and surfaces not tolerant of water-based cleaners — standard precautions for any aqueous cleaner. Always test inconspicuous areas on questionable surfaces, but the compatibility list covers 95% of construction materials.
Rinses residue-free, eliminating the re-cleaning problem common with soap-based products. Critical for final cleanup before inspections or client walkthroughs — no streaks on windows, no film on floors.
Professional Feedback
4.5/5.0 stars across major retailers reflects consistent contractor satisfaction. Users cite effective grease-cutting without harsh fumes, fresh lemon scent that’s not overpowering, and good value due to high concentration.
Contractor Talk forum discussions show professionals using Simple Green for various cleaning tasks, confirming its versatility beyond marketing claims. The non-toxic, environmentally friendly formula gets mentioned repeatedly as important for work environments.
The main limitation? Some contractors find it less effective than specialized industrial cleaners on the toughest stains, potentially requiring multiple applications for heavy grime. Fair trade-off for a cleaner that won’t send crews home with headaches.
Key Specifications
| Specification | Value |
|---|---|
| pH | 8.5-9.5 (mildly alkaline) |
| Flash Point | >212°F (100°C) |
| VOC Content | 0 g/L (EPA 24) |
| Specific Gravity | 1.01-1.03 |
| Weight | 8.34-8.42 lb/gal |
| Boiling Point | 213.8°F |
| Water Solubility | 100% |
| Container Size | 1 Gallon (3.78L) |
Simple Green delivers on its core promise — industrial cleaning power without the industrial hazards. The gallon jug handles everything from degreasing equipment to final surface prep, with dilution ratios that make economic sense. Skip the specialized cleaners that require training videos and respirators. This handles 90% of job site cleaning needs while keeping crews healthy and sites compliant.
Frequently Asked Questions
What dilution ratio works best for cleaning construction equipment? Use 1:10 dilution for heavy grease and oil on equipment. For routine maintenance cleaning of tools and machinery, 1:30 dilution works fine. Start stronger and dilute further if the cleaning power exceeds your needs.
Is this safe to use in food service areas under construction? Yes. The formula is orally non-toxic and biodegradable, with NFPA health rating of 0. Reviews specifically mention it’s safe for use in food preparation areas.
Will this damage aluminum window frames or metal siding? No. The non-corrosive formula is safe on all metals including aluminum and stainless steel. The mild alkaline pH won’t cause oxidation or etching.
Can this run through a pressure washer in winter? Yes. With a boiling point of 213.8°F, it handles heated pressure washers without breaking down. Use 1:20 to 1:30 dilution for pressure washing applications.
How does the lemon version differ from regular Simple Green? The lemon version adds fragrance to the same industrial-strength formula. Performance is comparable to Simple Green Crystal (fragrance and dye-free version) — choose based on scent preference, not cleaning power.
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