Safegrade Casestudy: Bio-based vs. Conventional

Safegrade Field Report - Railroad: Bio-based vs. Conventional


A distributor of Sorbent Green introduced Sorbent Green’s products to their client.

The following is a demonstration of Safegrade 320 and Greensorb, cleaning an oil stain on concrete surface outside the main facility building at one location. 

There was no excess use of water and/or pressure washing involved.

Greensorb™ material was developed to solve a need for individuals, companies, as well as Environmental Health & Safety (EH&S) teams to safely and responsibly mitigate a variety of liquids spilled in commercial or industrial facilities.  The product is being used in a variety of applications and is in widespread distribution.

Safegrade™ is a line of powerful industrial cleaners and solvents designed to care for and extend the life of equipment and tools.

Safegrade-320 Features:

  • Ideal for heavy-duty vehicle-equipment cleaning, and parts washing
  • Concentrated – dilute with water up to 50%
  • 85% biobased, sustainable ingredients
  • Readily biodegradable – biodegrades ≥ 60% within 28 days
  • Non-flammable
  • Neutral pH solvent, US EPA DFe Certified, and Zero VOCs


STEP 1: Safegrade 320 is applied to a 14-year-old diesel fuel & oily residue on concrete, where a tractor is generally parked at the Repair Center. The Safegrade 320 is spread evenly with a pump sprayer over the entire residue footprint.

STEP 2: Safegrade 320 is spread around the residue and agitated with a firm nylon brush. Once the entire residue has been worked, the Safegrade 320 is left to soak further into the concrete for three minutes. 

STEP 3: After the three minute soak time, Greensorb is applied to the entire residue area. 

STEP 4: Greensorb is spread evenly around the entire residue area with a standard medium cleaning broom and allowed a soak time of three minutes.

STEP 5: After the three minute soak time, the Greensorb is worked over the entire residue area with the reverse side of the firm brush for another three minutes.

STEP 6: The Greensorb is removed from the residue area with the medium cleaning broom revealing clean concrete.

STEP 7: The Greensorb absorbs and encapsulates contaminants causing the residue, and 100% of the used Greensorb is returned to the Greensorb Caddy for reuse. Please note that the Greensorb is still a light beige color, indicating substantial absorbent capacity is remaining. The process requires no water, and this diesel oily residue was removed in approximately 15 minutes.

Learn more about Safeegrade

Learn more about Greensorb