Millipore's ZHE (Zero Head Space Extractor) system has been designated by the USEPA as a suitable apparatus for Toxicity Characteristic Leaching Procedure (TCLP).
Dispensing pressure vessels hold liquid for filtration through Millipore pressure-operated filter holders, if connected to an external pressure source. Vessels meet ASME-UM Code requirements. Closures are secured by cam-lock handle. Vessels are autoclavable when vented. Accessory code-complying relief valve, pressure gauge and hose connectors are available. Accessory closure adapts vessels for vacuum use.