Bottle-top dispensers

Introduction to Bottle-top dispensers

Bottle-top dispensers are devices mounted directly onto chemical reagent bottles, used for repetitive, precise, and safe liquid dispensing in laboratories. This instrument helps users minimize direct contact with hazardous chemicals while optimizing dispensing procedures and sample solution preparation.

When selecting a bottle-top dispenser, users should consider volume ranges such as 0.2-1ml, 0.2-2.0ml, 2-10ml, or fixed-volume types like 1ml depending on analytical requirements. The piston material is also an important criterion, including precision-ground glass pistons for general solvents or high-purity aluminum oxide ceramics for chemical resistance. Additionally, buyers should note the autoclavability at 121 °C according to DIN EN 285 standards and the availability of DAkkS calibration certificates if required. Hoa Viet currently supplies German-origin bottle-top dispensers from Hirschmann and Vitlab.

What materials are bottle-top dispenser pistons typically made of?

Depending on the model and manufacturer, pistons can be made of high-purity aluminum oxide ceramic (such as the CERAMUS line by Hirschmann) or precision-ground glass pistons (such as the EM-Dispenser line by Hirschmann for aqueous and organic solvents that do not attack polypropylene).

Can bottle-top dispensers be autoclaved?

Many dispenser lines from Vitlab and Hirschmann can be steam sterilized at 121 °C, with Vitlab models complying with DIN EN 285 standards at 2 bar pressure. Certain products, such as Hirschmann's CERAMUS, can be autoclaved directly at 121 °C without disassembly.

Which brands of bottle-top dispensers does Hoa Viet currently supply?

Hoa Viet distributes genuine bottle-top dispensers from two German manufacturers: Vitlab and Hirschmann. Customers can contact Hoa Viet for advice on selecting suitable volume ranges along with optional DAkkS calibration certificates.