【Bottle Top Dispensers】Allow you to safely dispense a fixed amount of liquid directly from a bottle to a receiving container. Bottle top dispensers help reduce the loss of reagents, save time, and reduce risk 【Smooth, Drip-free Dispensing】Featuring a PTFE piston and ETP O-ring, the dispenser ensures smooth, drip-free operation. The lubrication provided by these components enhances dispensing reliability 【Professional Piston Design】Designed for low-intensity operation and smooth plunger movement; when the dispenser is not in use for a short period of time, the discharge tube cap prevents leakage 【Product Accessories】Five common adapters meet 99.9% of dispensing needs (40mm), (38mm), (32mm), (28mm), (25mm), two lengths of dispensing tubes (14cm/46cm), flexibly compatible with shallow and deep bottles 【Application】Our bottle top dispensers can be used to dispense precise amounts of chemicals, reagents, organic and inorganic solvents, oils and more from bottles or other containers