● 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; large white writing area for easy marking
● Double threaded design reduces cross-threading; caps are easily opened and closed
● Flat-top caps are available upon request
● Gamma radiation sterilized, non-pyrogenic
● No heavy metals
● Available in racked package (sterile) or bulk package (sterile & non-sterile)
● RNase & DNase free