Super Clean (Base-Plate Design) Gas Purifier enables the GC user to purify and manage the gas streams. It provides gas at the proper purity level, and at the correct pressure, based on its intended use. In this design, the purifiers connect into a base plate in such a manner that gas supply is not interrupted during purifier change-out. Therefore, the purifier can be replaced without shutting down the entire system. Additionally, the risk of forcing a ′slug′ of air into the instrument after purifier change-out is eliminated.