Closures are for use with amber PPCO micro packaging vials to provide barrier for light-sensitive reagents
Permanently attached, color-coded inserts are free of toxic heavy metals
Inserts do not come in contact with vial contents
Threaded, screw closure are sterile to 10-6 SAL, RNase/DNase Free, Non-cytotoxic, non-pyrogenic and leakproof when used with Nalgene Micro Packaging Vials
