These dispensers feature a graduated measuring cup that slides up and down on the vertical tube for adjustment. The variation in height determines the volume to be dispensed. The cup is filled by squeezing the bottle and forcing the liquid up the tube. When the bottle pressure is released, the excess will be drawn back into the bottle, and only the desired volume will remain.
- LDPE bottle
- PMP cup
- HDPE tube
- Cup measures volumes from 5mL to 25mL