Look for the mark and you'll find a safer product.
The NSF Certified for Sport program certifies that participating manufacturers and their products have met NSF’s stringent independent certification process guidelines. These guidelines include:
Like all NSF certification programs, ongoing monitoring will occur to ensure continued compliance with all requirements to maintain product certification. From extensive product testing and formulation/label review to unannounced plant inspections, NSF is the only third-party testing organization to conduct a complete evaluation of every aspect of a product’s production before it can earn certification.