Redox Bio-Nutrients has achieved a major regulatory milestone with its product Mainstay® Si receiving top certification from The Fertilizer Institute (TFI). This makes Redox one of the few companies in the industry to hold two TFI Biostimulant Certifications, reinforcing its commitment to verified efficacy and safety.
Redox Bio-Nutrients Product Mainstay® Si Receives TFI Biostimulant Certification
Burley, Idaho
Redox Bio-Nutrients, LLC today announced that its biostimulant product Mainstay® Si received a top certification from The Fertilizer Institute (TFI), indicating that the product meets industry recognized standards for efficacy, safety, and composition.
Mainstay® Si joins Mainstay® Calcium 2.0 with TFI certification. Having two such certifications is an unprecedented accomplishment among the vast field of biostimulant companies.
Mainstay® Si is a unique combination of calcium and silicon nutrition designed to:
- Increase cell wall strength in the plant.
- Improve crop quality.
- Bolster stress defense mechanisms.
“These certifications further validate our all-in commitment to providing growers with technology that consistently delivers positive results,” said Colton Moon, Redox President. The TFI Biostimulant Certification Program prioritizes efficacy, safety, and composition, providing confidence to retailers and growers in a crowded market.
Redox Bio-Nutrients is also ISO 9001 certified, ensuring their processes remain controlled and consistent to deliver reliable, high-quality products.

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