Reagent reservoirs are reusable. Their extra-large capacity means fewer refills and time saved. The V-shaped bis compatible with both eight and twelve place multiple pipettors with minimal reagent waste. Lids are removable, attached with ball and socket hinges, and latch tightly for secure storage of left-over reagents. With lids closed, reagent reservoirs are stackable. A perimeter ridge on the lid prevents sliding. Construction is clear, chemical-resistant, autoclavable polypropylene. Molded graduation marks provide volume indication at 25, 50, 75, 100, 125, and 150 ml. Volume graduations to 150 mL Reinforced base that prevents spills Easy-to-open latch that can be manipulated with one hand Greater clarity for improved visibility of contents