Features ● Biologix 15ml,Website: , 50ml conical bottom centrifuge tubes: made of strong, highly transparent medical grade polypropylene ● Flat-top caps: made of medical grade polyethylene ● Plug-seal screw on caps: made of medical grade polypropylene ● 15ml and 50ml conical tubes available; ● Biologix writing area graduation conical bottom centrifuge tubes ● Double threaded design reduces cross-threading; caps are easily opened and closed ● Flat-top caps can be written on ● Gamma radiation sterilized, non-pyrogenic ● Available in sterile, non-sterile conical bottom centrifuge tubesSpecifications ● Working temperature: stable from -20°C to 121°C (except flat-top cap) ● 15ml and 50ml tubes can withstand centrifugation of 8,400 and 9,400 RCF respectively ● Sealing test: complies with the International Air Transport Association (IATA) Safety Standards    Cat#VolumeCapsSterilePackageUnit10-915115mlFlat TopYesRack50 /Rack, 10 Racks/Case10-915215mlFlat TopYesBulk25 /Pack, 20 Packs/Case10-950150mlFlat TopYesRack25 /Rack, 20 Racks/Case10-950250mlFlat TopYesBulk25 /Pack, 10 Packs/Case10-981515mlFlat TopNoBulk500 /Case10-985050mlFlat TopNoBulk500 /Case10-015115mlPlug SealYesRack50 /Rack, 10 Racks/Case10-015215mlPlug SealYesBulk25 /Pack, 20 Packs/Case10-050150mlPlug SealYesRack25 /Rack, 20 Racks/Case10-050250mlPlug SealYesBulk25 /Pack, 20 Packs/Case10-081515mlPlug SealNoBulk500 /Case10-085050mlPlug SealNoBulk500 /Case1.Our Company    2.CE/ FDA /ISO CERTIFICATE 3.Ordering Information a.Free Product Samples Let us send you a FREE sample package of our great products. Contact us today if you are interested in trying out Biologix products before you buy. b.Returned Products Any return request must be authorized before credit is provided. Please provide the product, invoice number, and reason for return.A restocking fee may apply. Products returned 30 days after delivery and special order/custom products are subject to review prior to issuing credit. c.Distribution If interested in distribution opportunities, please contact us for distributor terms and pricing. We are accepting distribution opportunities worldwide. Please contact us at order@biologixgroup.com