The bottle-top dispenser makes liquid dosing easy and secure.Analog volume displayQuickly adjustable dosing volumeVolume selection with interior scalloped trackSimple calibration adjustment with a supplied toolValve system - tight sealing without additional sealing ringsFilling valve, olive-shapedAutoclavable at 121 °CScope of supply:Bottletop dispensers Dispensette® S, DE-M marked, performance certificate, telescope filling tube, mounting tool, adapters made of PPYellow color code. Ideal for dispensing organic solvents, e.g., chlorinated and fluorinated hydrocarbons such as trichlorotrifluoroethane and methylene chloride, or concentrated acids such as HCl and HNO3 (not HF) as well as trifluoroacetic acid (TFA), tetrahydrofuran (THF) and peroxides.