Cleaning solution filled pipette jars soak the fragile glassware in between uses for contamination free testing. Models complete with a tight-fitting lid prevent solution evaporating and transform the jar into a protective storage and transportation unit. Autoclaving without a lid, the durable containers safely hold pipettes during the sterilization process and resist cracking caused by the application heat stress. Overall dimensions, capacities, and colouring may vary among the seamless pipette jars.