Bottle top dispensers with recirculation valve

The LABSOLUTE® bottle top dispenser series is impressive with its high quality and unlimited reliability in combination with a high degree of safety and user-friendliness. Exceptionally high-quality materials guarantee a long service life and superlative chemical resistance.

No compromises on quality or reliability
All wetted parts of the LABSOLUTE® bottle top dispensers are made of PTFE, fluorinated ethylene propylene and borosilicate glass. The constant ejection volume and completely bubble-free dispensing make them the number one choice in terms of precision and reproducibility. Each of the LABSOLUTE® dispensers comes with an individual certificate, since all devices are calibrated in accordance with DIN ISO 8655.

Extra security when handling liquids and maximum handling comfort

  • Protection of the borosilicate dispensing cylinder with PP material
  • Safety closure valve prevents uncontrolled dripping, air contact or drying out
  • Five universal adapters from 28 - 45 mm for all common bottle sizes
  • Free-running mechanism thanks to specially constructed PTFE piston with silicon O-ring
  • Telescopic suction tube to different bottle heights
  • Rapid and easily visible volume adjustment with handy adjustment screw
  • Autoclavable at 121 °C


Adapters with 28, 30, 36, 40 or 45 mm thread for securing the dispensers to bottles are included in the supplied package.

The dispenser with recirculation valve allows a uniform, precise and reliable bubble-free dosing without reagent loss. The specially designed bottle adapter allows a 360° rotation of the dispenser on the mounted bottle.

Volume range Grad. Accuracy max. vol. Precision max. vol. PK Cat. No.
ml ml &le ± R% &le CV%
1 0.25 - 2.5 0.05 0.6 0.2 1 7695540 Open webshop
2 0.5 - 5 0.10 0.5 0.1 1 7695541 Open webshop
3 2.5 - 30 0.50 0.5 0.1 1 7695543 Open webshop
4 5.0 - 60 1.00 0.5 0.1 1 7695544 Open webshop
5 10.0 - 100 2.00 0.5 0.1 1 7695545 Open webshop
6 1.0 - 10 0.20 0.5 0.1 1 7695542 Open webshop
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