Plastic and glass containers and closures hold and store liquid and solid samples, media, and chemicals. Plastic is impact resistant and lighter than glass, making large plastic bottles and jugs easier and safer to handle than glass. Glass is chemical and scratch resistant and doesn't absorb odors. It can be sterilized between uses and withstands higher temperatures than plastic, making it a good choice for applications where substances will be heated. Bottle dispensers attach to large bottles to dispense small quantities of liquid without lifting the bottle. Caps, stoppers, and lids keep contents contained and prevent cross-contamination. Crimper and decrimpers secure aluminum caps to vials. Flask stabilizers and pour rings ensure contents don't spill. Lab adapters and joints extend flask capabilities and ensure supporting equipment (such as thermometers) can be used effectively.