Internal CapInnovative bi-injection system. Plastic and Silicon parts are melted in a single body. No leaking No contamination Excellent screwing grip Printing a clear and defined printingexcellent clarity of tube makes sample easy to see BarCode ? Provided with a serial/consecutive Bar-code 128 printed on each tube. ? Readable with the most common barcode readers ? Double decoding readable by both sides Bottom with locking system interlocks to workstation Human DNA, DNase, RNase, Pyrogen, ATP, PCR inibhitors free certified Non Cytotoxic Non Hemolytic ? The material has passed the United States Pharmacopeia testing including Class VI tests. ? Material has successfully passed the biological tests according to ISO 10993 external com-municating devices for indirect blood contact for a prolonged period.