Plastic container with a vacuum pump is ideal for drying, preserving, storing, and even shipping samples. Vacuum pump built into the top removes air with manual strokes. Rubber O-ring-sealed cover maintains vacuum. Achieves a vacuum of better than 200 inches of water. A release button on top allows air into the container to remove the lid. Ideal for storing chemicals, powders, sample tissues, plant sections, and for weighing samples. Desiccants keep material dry. Diameter of all three sizes is 4-1/8 inches.
