Bonded caps from SeptaSource are made of polypropylene (PP) plastic and bonded to platinum-cured silicone septa that’s easy-to-pierce.
To ensure analytical purity, we use a proprietary bonding technology that maintains the septum’s analytical properties. In other words, our bonding process won’t add contaminants that can leach from the cap-and-septa assembly into your laboratory samples.
Choose bonded septa in the following polypropylene caps:
