Skip to main content
v2026.11,772 entries · CC-BY 4.0
Dictionary termTrack EStablev2026.2

LEAF (Laboratory Efficiency Assessment Framework)

A standards-based assessment framework developed by University College London that scores wet and dry laboratories on energy, waste, water, procurement, and research-quality practices, awarding Bronze, Silver, or Gold accreditation.

ByCASRAI Editorial Board
· Last updated 15 Aug 2026
Share this

Ask CASRAI · included with Regulatory Radar

Ask about LEAF (Laboratory Efficiency Assessment Framework)

Ask CASRAI answers research-administration questions and cites the passages behind every claim — and says so when the corpus does not cover something, instead of guessing. It comes with a Regulatory Radar subscription at $29 a month, alongside the daily digest of regulatory changes and the dashboard of what changed.

150 questions a day, on this site, over the API, or inside your own tools through the CASRAI MCP server.

Everything CASRAI publishes — this page, the dictionary, the guides and the news — stays free to read, with no account and no card.

Examples

Worked examples

  • Is an instance

    A molecular biology lab achieves Bronze LEAF by labelling -80 degC freezers, running an annual sample audit, and posting waste-segregation signage.

  • Is an instance

    A chemistry department uses aggregated LEAF dashboard data to report scope-3 procurement reductions to its sustainability office.

Counter-examples

Looks similar, but isn't

  • Not an instance

    A general-purpose office building energy audit is not LEAF; LEAF is laboratory-specific.

  • Not an instance

    ISO 14001 certification at the organisational level is not LEAF, which operates at the individual lab unit.

Editorial commentary

LEAF was launched in 2018 to give laboratories a structured, low-burden way to improve sustainability while also reducing operational cost. Each criterion is mapped to a measurable behaviour (for example, closing fume-cupboard sashes, warming -80 degC freezers to -70 degC, consolidating supplier deliveries) and submitted through an online dashboard that estimates annual carbon and financial savings. LEAF is now adopted across more than 80 institutions internationally and is often used as the entry-level scheme before pursuing My Green Lab certification. It is referenced in funder sustainability guidance (UKRI, Wellcome) as evidence of laboratory environmental stewardship.

References

  • University College London: LEAF Sustainable Laboratories Programme; UKRI Environmental Sustainability Strategy 2023.

Frequently Asked Questions

What does LEAF stand for?

LEAF stands for Laboratory Efficiency Assessment Framework, a sustainability accreditation scheme for laboratories launched in 2018.

Who runs the LEAF scheme?

LEAF is run by University College London (UCL) as part of its Sustainable Laboratories Programme.

What accreditation levels does LEAF award?

Labs that complete a LEAF assessment can achieve Bronze, Silver, or Gold accreditation, scored across categories including energy, waste, water, and procurement.

What does a LEAF assessment actually measure?

Each LEAF criterion is tied to a specific, measurable lab behaviour, such as keeping fume-cupboard sashes closed, running ultra-low freezers at -70 degC instead of -80 degC, and consolidating supplier deliveries. Labs log this through an online dashboard that estimates the resulting carbon and financial savings.

How does LEAF relate to My Green Lab certification?

LEAF is commonly used as a lower-burden, entry-level sustainability scheme that labs complete before pursuing the more rigorous My Green Lab certification.

Is LEAF accreditation recognized by research funders?

Yes. LEAF is referenced in funder sustainability guidance, including from UKRI and Wellcome, as evidence of a laboratory’s environmental stewardship.

Also known as

LEAF · Laboratory Efficiency Assessment Framework · UCL LEAF

Machine-readable encodings

Use in your systems

JATS XML <role> element
xml
<role vocab="credit"
      vocab-identifier="https://casrai.org/dictionary/"
      vocab-term="LEAF (Laboratory Efficiency Assessment Framework)"
      vocab-term-identifier="https://casrai.org/dictionary/term/leaf-laboratory-efficiency-assessment-framework" />
Schema.org DefinedTerm (JSON-LD)
json
{
  "@context": "https://schema.org",
  "@type": "DefinedTerm",
  "@id": "https://casrai.org/dictionary/term/leaf-laboratory-efficiency-assessment-framework",
  "name": "LEAF (Laboratory Efficiency Assessment Framework)",
  "identifier": "https://casrai.org/dictionary/term/leaf-laboratory-efficiency-assessment-framework",
  "description": "A standards-based assessment framework developed by University College London that scores wet and dry laboratories on energy, waste, water, procurement, and research-quality practices, awarding Bronze, Silver, or Gold accreditation.",
  "inDefinedTermSet": "https://casrai.org/dictionary/domain/sustainable-research#set",
  "url": "https://casrai.org/dictionary/term/leaf-laboratory-efficiency-assessment-framework",
  "sameAs": [
    "LEAF",
    "Laboratory Efficiency Assessment Framework",
    "UCL LEAF"
  ],
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "publisher": {
    "@id": "https://casrai.org/#organization"
  },
  "author": {
    "@id": "https://casrai.org/#editorial-team"
  },
  "datePublished": "2026-05-21T02:23:01",
  "dateModified": "2026-08-15T04:35:49",
  "inLanguage": "en-GB",
  "isAccessibleForFree": true
}

Referenced across the research world

University of Cambridge logoColumbia University logoCrossref logoUniversity of Edinburgh logoHarvard University logoUniversity of Oxford logoPrinceton University logoStanford School of Medicine logoUniversity College London logoORCID logoUniversity of Cambridge logoColumbia University logoCrossref logoUniversity of Edinburgh logoHarvard University logoUniversity of Oxford logoPrinceton University logoStanford School of Medicine logoUniversity College London logoORCID logo
  • University of Cambridge logo
  • Columbia University logo
  • Crossref logo
  • University of Edinburgh logo
  • Harvard University logo
  • University of Oxford logo
  • Princeton University logo
  • Stanford School of Medicine logo
  • University College London logo
  • ORCID logo

View CASRAI adoption →

Regulatory Radar

Stop finding out after the fact

$29/month, cancel anytime. Daily digest updates from our analysis, a dashboard holding the same items, and a cited assistant for everything they raise.

  • Federal Register, Federal Register+, Grants.gov, Regulations.gov, NSF News, UKRI, plus CASRAI’s own published content.
  • 72,264 indexed passages, and every answer cites the ones it drew on.