Dropper caps provide complete control for repeated and uniform sized droplets commonly needed in biotechnology, diagnostic, or pharmaceutical applications. Safely store reagents, stains, or dyes without until needed with these tops. Dropper caps are offered in different thread sizes and manufacturing materials for best compatibility matching bottle and desired liquid. With different colour options available, fluid identification is rapid. Converting models change serum bottles into a dropper bottle, eliminating the cost of buying additional containers.