08 TECHNICAL INFORMATION | PRODUCT SECTION
FURTHER PROCESSING
DURAN® items made of borosilicate glass 3.3 are suitable for further processing such as the addition of screw thread tubes, olives, tubulatures, necks and ground glass joints. Preferred for further processing are round, flat bottom and Erlenmeyer flasks. Certain sections of the temperature / viscosity range are of particular importance for glassworking. In the transformation range the elastic-brittle behaviour of the glass changes with increasing temperature into a markedly viscous one, so that consequently all its physical and chemical properties change significantly with temperature. The transformation temperature range thus plays an important part in stress relief during heating up and the introduction of stress when the glass is cooled. The position of the transformation range is identified by the transformation temperature “Tg” DIN 52 324.
Normal temperature dependence/viscosity curve of, for example, DURAN®; viscosity ranges of important processing techniques, position of fixed points of viscosity and various limiting temperatures.
Note DWK Life Sciences cannot accept any product liability where items are subjected to further processing. In this case the entire responsibility for quality lies with the glassworker. The latter is therefore responsible for ensuring that the further processed item conforms to current directives and safety requirements.
DURAN® WITH INDIVIDUAL LABELLING
Individual and permanent labelling of glass articles is now possible due to innovative laser marking. This system enables flexible labelling depending on the customer’s requirements in the form of texts, consecutive serial numbers, barcodes, logos, names or trade name of the laboratory, etc. This information is processed with the aid of the common file format .tif. The contents are clearly identified by the labelling. Mix-ups in the laboratory can be ruled out, which is very important for sensitive areas such as the pharmaceutical industry or biotechnology. Laser marking is an ideal solution for labelling products. It enables the labelling of glass containers in
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