This airtight chamber has been proven safe and reliable for in vitro fertilization, HIV isolation, creation of hypoxic / hyperoxic / normoxic environmental conditions, organ culture and the culturing of a host of cell lines. Each unit is a self-contained incubator enabling you to create the desired tissue culture environment (gas concentrations and humidity). Manufactured from high test polycarbonate and individually tested for o-ring seal leakage. Clear polycarbonate allows visual observation of cultures without breaking the incubator's seal. Chambers can be stacked and interlocked for agitation, storage and to conserve space in war. Multiple-purpose trays hold petri dishes, test tubes, tissue culture flasks, microculture plates, etc. Lid and Marman clamp design allow easy access to experiments. All components are nontoxic and can be alcohol-sterilized. Inside chamber offers a seamless, crevice-free interior with rolled corners to ensure easy cleaning and decontamination.