Premium Natural rubber latex guarantee the condom quality Natural rubber latex is the main material in producing the condoms. Each lot of raw materials is quarantined upon arrival and sampled for incoming inspection. The tests performed on these samples range from infrared and ultraviolet chemical analysis to visual and physical tests. Certificates of analysis from the vendors are reviewed against purchase specifications. A written specification exists for each raw material used in the product. When the raw material is accepted, it is released from quarantine for use. If it fails to meet the specification, it is rejected and returned to the vendor or reviewed by the Material Review Board for final disposition.