Beschrijving
DURAN® automatic burette according to Pellet, Class AS, is a high-precision volumetric tool engineered for titrimetric applications and measure analysis. Made from chemically highly resistant borosilicate glass 3.3, the 50 ml burette offers exact scaling so that the liquid volume required for a completed titration can be read with great accuracy. The instrument is adjusted to deliver (Ex) at a reference temperature of +20 °C; consequently the dispensed quantity matches the scale reading because adhesion of liquid to the glass wall has already been allowed for in calibration. Volume tolerances comply with the error limits defined by ISO and DIN for accuracy class AS. Supplied with a PTFE key and burette bottle, the design eliminates the need for greasing that glass keys normally require, simplifying laboratory practice. Class AS burettes bearing a batch number are delivered with a batch certificate that states the batch mean, standard deviation and issue date; certificates remain available online. From manufacturer Duran/DWK Life Sciences, distinctive features include main-point ring graduation, Schellbach stripe, lateral NS stopcock, 2000 ml reservoir bottle and rubber bellows. Waiting time is 30 seconds. The complete delivery set—burette, bottle and bellows—supports titration, volumetry and quantitative analytical work.
This article is part of Burettes, in Volumetric glassware.
Key features
- Pack size: 1 pc
- Nominal volume: 50 ml
- Material: Borosilicate glass 3.3
- Accuracy class: AS
- Stopcock type: PTFE key
- EAN: 4032051325821
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Questions about DURAN® Automatic Burette, Class AS, Pellet-type, glass key, CoC, batch certifica
What is this article?
DURAN® Automatic Burette, Class AS, Pellet-type, glass key, CoC, batch certifica is the article on this page. Luminix Health distributes DWK Life Sciences for laboratory use. It sits in Buretten, inside Volumetrisch glaswerk, in Labmateriaal.
A burette delivers a measured volume through a stopcock, which is how a titration is read. Class A and class AS state the tolerance. The stopcock, glass or PTFE, and the volume of the burette are the choices. A dirty bore changes the delivered volume.
Volumetric glassware is glass that has been calibrated to contain or to deliver one stated volume at a reference temperature. That calibration is the whole point. Class A and class AS have a tighter tolerance than class B. A volumetric flask contains. A pipette and a burette deliver. A measuring cylinder is the coarser reading, used when the volume is not the result. The classes sit under ISO laboratory glassware. The chain back to the unit of volume is the work of the BIPM and of NIST.
Which category should I open next?
The category is Volumetrisch glaswerk. The sub-category is Buretten. The catalogue is Labmateriaal.
Shelves beside this one are Maatkolven, Maatcilinders, Mengcilinders and Volumetrische accessoires & certificaten.
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.