BOILING FLASKS AND GENERAL LABORATORY GLASSWARE
DURAN® laboratory glassware, including heating vessels, has very good thermal- shock resistance (ΔT=100 K) and a high operating temperature (+ 500°C). Not only the glass type, but also its uniform wall thickness distribution are critical in preventing uneven expansion and stressing of the glass which could result in failure. For this reason, wall thickness distribution is, as a vital quality characteristic, continuously checked during the production process. The beakers are primarily used as heating vessels. The tall shape is particularly suited to heating in liquid baths where the beaker contents are protected against the surrounding medium.
Erlenmeyer flasks are well suitable for mixing, because of their conical shape.
Weighing bottles are used when accurately weighing out substances. Close fitting lids with moulded grips are used to prevent the substances from being lost, e.g. during transport within the laboratory.
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Watch glass dishes can be used both for covering beakers and Erlenmeyer flasks as well as for weighing small quantities of substances.
Our product range also includes a wide range of test tubes. In addition to DURAN® glass, other glass types are available (FIOLAX®, soda-lime). The characteristics of each glass type may be found in the chapter technical information.
Usage tips:
• Due to the uniform wall thickness distribution suitable for very high temperature changes. • The printed scale on many items of DURAN® laboratory glassware is indicated with an accuracy of ± 10%. Therefore the items are not suitable for use as volumetric glassware. • The products are not designed for use under differential pressure or vacuum conditions. DURAN® beakers and Erlenmeyer flasks are provided with a retrace code. Using the eight-character code and the corresponding article number, a batch and quality certificate can be obtained at www.DWK-LifeSciences.com abrufen.
> Find your nearest distributor on our global network: www.DWK-LifeSciences.com/DURAN/distributors
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