What Is Green Seal Certification?
In plain English: Green Seal is an independent nonprofit that certifies products against science-based sustainability standards. Its GS-37 standard for cleaning products means a cleaner met strict limits on harmful ingredients, VOCs and packaging while still cleaning effectively.
Also listed as: Green Seal, GS-37, Green Seal certified
The honest science
Green Seal is a global nonprofit that writes science-based standards and certifies products that meet them. For cleaners the key standard is GS-37, covering all-purpose, glass, bathroom, carpet and enzymatic cleaners used in offices, institutions and industrial settings 1.
GS-37 is a "leadership" standard, meaning it's meant to go beyond minimum regulatory compliance. To earn it, a product must clean as well as conventional options while meeting requirements that protect water, air and health: being sold in concentrated form, limiting VOCs, using more sustainable packaging, and excluding a long list of harmful chemicals 1. That prohibited list includes heavy metals, phthalates, formaldehyde donors, known carcinogens and mutagens, reproductive toxins, asthmagens and ozone-depleting compounds 1.
For a label-reader, Green Seal is a credible third-party seal: an outside nonprofit verified the formula against a published, performance-plus-safety standard rather than the brand grading itself. The honest framing is that GS-37 was built largely around institutional and janitorial cleaning, and, like any certification, it certifies against a specific standard, so it's strong evidence of a safer, better-formulated product without being a blanket promise for every individual sensitivity.
Where you'll find it
- all-purpose and glass cleaners
- bathroom and carpet cleaners
- institutional and janitorial products
- enzymatic cleaners
The safer-swap angle: A Green Seal mark tells a label-reader an independent nonprofit checked the formula against real ingredient bans and performance tests, not just marketing. It's a trustworthy shortcut, especially since it explicitly excludes ingredients like formaldehyde donors and phthalates.
Frequently asked questions
Who is Green Seal and are they independent?
Green Seal is an independent global nonprofit that develops science-based sustainability standards and certifies products against them. Because it's third-party, its seal carries more weight than a brand's own 'green' claims.
What does GS-37 certification require?
That a cleaner performs as well as conventional products while meeting limits on VOCs, using sustainable packaging, coming in concentrated form, and excluding harmful chemicals like heavy metals, phthalates, formaldehyde donors, carcinogens, reproductive toxins and asthmagens.
Is Green Seal the same as EPA Safer Choice?
They're similar in spirit but separate. Safer Choice is run by the federal EPA; Green Seal is an independent nonprofit standard. Both screen ingredients and require real cleaning performance, so either seal is a strong signal for a label-reader.
Sources
Ingredient safety data changes as new research is published, and product formulas change over time. Always read the current label and check primary sources.
Related terms
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