California Proposition 65 Support

  • Overview
  • Benefits of Testing
  • How the Process Works
  • Why Work With NSF

California Proposition 65 is a “right to know” law passed in the mid‐1980s to address growing consumer concerns about exposure to chemicals that may be present in consumer products. The law requires California to publish a list of chemicals known to cause cancer, birth defects or other reproductive harm. Businesses are given 12 months to comply with the Proposition 65 warning requirements after a new chemical is added to the list or be subject to risk of litigation from California’s enforcement community.

NSF offers full Proposition 65 services, from analytical capabilities to generating the required data to full dossier assembly.

We may be able to leverage client data (such as product types and product formulations, which are useful for exposure calculation) from testing already completed in support of NSF certification or registration.

Benefits of Testing

NSF’s risk assessment team is uniquely poised to offer a variety of Prop 65 services, including:

  • Proactive and reactive unbiased, third-party toxicology reviews
  • Detailed exposure assessments
  • Customized analytical testing services
  • Secure storage of confidential formulary and testing information
  • Expert opinion letters that can support or refute the need for a warning label to be in compliance with the law

How the Process Works

Customized to your project requirements, our Prop 65 projects typically follow these steps:

  1. Formulation review: NSF toxicologists perform a comprehensive review of formulary information and raw material composition disclosures for the presence of Proposition 65 listed chemicals.
  2. Exposure assessment: NSF toxicologists conduct an exposure assessment and determine whether exposure under specified use conditions is anticipated to exceed safe harbor levels.
  3. Safe harbor levels development: If safe harbor levels are not established for a listed chemical, NSF toxicologists can derive them according to the guidelines established by the California Environmental Protection Agency’s Office of Environmental Health Hazard Assessment.

Why Work With NSF

NSF is an expert in the field, providing toxicology and chemical risk assessment services to evaluate ingredients, materials and products for nearly 30 years. NSF toxicologists have prepared more than 170 externally peer-reviewed chemical risk assessments and have populated a wide internal database of risk-based action levels for roughly 2,000 chemical contaminants.

If you are a currently listed NSF client, we can utilize the formulation information and analytical testing results already on file at NSF to expedite your review.

Our toxicologists employ chemical hazard, exposure and risk assessment methodologies for evaluating the safety of food ingredients, drinking water products, food contact materials, dietary supplement ingredients/products and cosmetic and personal care products, and in support of safer chemistry and sustainability program initiatives.

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