A bottle top dispenser is a laboratory instrument designed to accurately and safely dispense a specific volume of liquid directly from a reagent bottle. It screws onto the top of a bottle and allows users to repeatedly dispense the desired amount of liquid with precision. Here are some of the key uses and benefits of bottle top dispensers: * Accurate and Reproducible Dispensing: They deliver precise and consistent volumes, which is crucial for many laboratory procedures and experiments. * Enhanced Safety: By dispensing directly from the bottle, they minimize the risk of spills and exposure to hazardous chemicals compared to manual pouring or pipetting. * Reduced Waste: The controlled dispensing helps prevent the wastage of valuable reagents. Many models also feature a recirculation valve to redirect liquid back into the bottle during priming, preventing loss. * Improved Efficiency: They speed up the dispensing process, especially when multiple aliquots of the same volume are needed