Pipettor accessories and pipette supplies are used with electronic and manual pipettes to extend functionality or replace lost or worn-out parts. Manual models use a pipette bulb, sometimes spelled pipet bulb, to aspirate and dispense liquids manually, while electronic models often require replacement chargers. Filters and filter kits remove contaminants from solutions before dispensing, and tip covers prevent damage while the pipettor is not in use. A pipette stand is used on lab benches to store single-channel, multichannel, and electronic pipettors in an upright position, which prevents solution from reaching and damaging the dispensing mechanism. Other pipettor accessories include pumps for use with multi-well receptacles, sterilization tips, storage containers, eight-well and 12-well adapters, reagent reservoirs, safety labels, and manual fillers. Brands include Pipet-Aid.