Natural molded polypropylene closures are a convenient alternative when a resealable closure is not required. The thin membrane allows for easy needle penetration and the purchase and assembly of septa are not required with this easy-to-use one-piece closure.

Pre-assembled caps and septa reduce the chance of contamination of the septum during sample preparation Assembled closures and septa save sample preparation time Caps are manufactured of high quality polypropylene Plastic Microsampling Vials