ISO 17034 Accredited Producer

Reference Standards You Can Trust

Over 18,906 certified reference materials for pharmaceutical, food safety, environmental and semiconductor analysis. COA available. Worldwide shipping.

Why CATO?

ISO 17034

CNAS + ANAB dual-accredited reference material producer.

1,000,000+ Products

In-stock catalog with COA and SDS documentation.

Worldwide Shipping

DDP logistics support and HS code guidance for smooth customs clearance.

10,000+ Customers

Trusted by global pharma including AstraZeneca, Teva and Sun Pharma.