Description
Screw cap with dropper, DIN-18, graduated, black, for 50 ml bottles is a polypropylene screw closure with integrated dropper components for converting matching glass vials into dropper bottles. The set comprises a sealing screw cap, a silicone pipette bulb and a glass pipette with graduation markings for controlled dispensing. Acid- and alkali-resistant materials support everyday laboratory use with many aqueous reagents and standard solutions. Intended for DIN-18 necks on 50 ml glass bottles, it allows FRGA, FRGN, FRGB and FRGG series bottles to function as dropper bottles while retaining the original glass body. Supplied in packs of 20 pieces from manufacturer Labbox, this black graduated dropper cap is well suited to reagent dosing, sample aliquoting and general wet-lab workflows that require dropwise delivery. The polypropylene cap with seal helps keep the closure reliable in storage and on the bench, and the graduated glass pipette aids more consistent drop volumes. Net weight is 0,130 kg per pack, supporting efficient stocking for multi-user laboratories and teaching environments.
This article is part of Pasteur pipettes, in Pipettes & pipette tips.
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Questions about Black graduated counterdrop screw cap for 50 ml DIN-18 neck bottle, 20 pcs
What is this article?
Black graduated counterdrop screw cap for 50 ml DIN-18 neck bottle, 20 pcs is the article on this page. Luminix Health distributes Labbox for laboratory use. It sits in Pasteur pipettes, inside Pipettes & pipette tips, in Lab consumables.
A Pasteur pipette is an uncalibrated glass or plastic transfer pipette. It moves a drop. It does not measure. Glass ones are pulled to a tip. Plastic ones are a single piece. Neither belongs in a result that needs a stated volume.
A pipette moves a measured volume. A volumetric pipette delivers one line. A graduated pipette delivers along a scale. A Pasteur pipette is an uncalibrated transfer. A piston pipette uses a tip, and the tip has to seal on that pipette. A filter tip adds a barrier so aerosol from the sample does not reach the piston. Serological pipettes are the long graduated tubes used with a controller. The volume and the fit are the specification. Piston pipettes are treated under ISO laboratory apparatus. In-vitro work also meets ISO in vitro diagnostic systems.
Which category should I open next?
The category is Pipettes & pipette tips. The sub-category is Pasteur pipettes. The catalogue is Lab consumables.
Shelves beside this one are Pipette tips, Filter tips, Pipetting accessories, Graduated pipettes, Volumetric pipettes, Pipette controllers & fillers, Reagent reservoirs, Dispenser & repeater tips and Serological pipettes.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

