COLOR CAPS: 5 colors in each packing and easy for group testing and sample identify. MEDICAL GRADE : Made from Virgin USP VI grade Polypropylene， free of heavy metal, non cytotoxicity. HIGH SPEED: MAX RCF up to 12,000xg LEAK-PROOF & CHEMICAL RESISTANCE: Excellent sealing performance even in -90Kpa, suitable for liquid short storage and air transportaion. E-BEAM STERILE: More Eco-friendly and Safety compare with EO/ Gamma Sterile, SAL<10-6. Item Weight 18.06 pounds Manufacturer Zhejiang A-GEN Biotech Co., Ltd. Item model number CT-50-S Package Dimensions 21.5 x 18.25 x 13.25 inches