ISO 17034 Accredited Producer
Reference Standards You Can Trust
Over 1,000,000+ certified reference materials for pharmaceutical, food safety, environmental and semiconductor analysis. COA available. Worldwide shipping.
Product Categories
Pharmaceutical Impurity Reference Standards
59,706 productsPharmaceutical Reference Standards
950,805 productsDeuterated Reagent Standards
104 productsFood Safety Reference Standards
203 productsEnvironmental Reference Standards
169 productsNatural Product Reference Standards
411 productsSemiconductor Materials Standards
2 productsCosmetic Ingredient Standards
10 productsWhy 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.