Description
Kjeldahl test tube LBG 3.3, Ø42 x 300 mm is a digestion tube made from borosilicate glass 3.3 for nitrogen determination and related wet-chemical laboratory procedures. It features a round bottom and a beaded rim for stable heating-block placement and reliable handling throughout digestion and cooling. The pack of 10 pieces supports routine sample throughput in analytical, food, feed and environmental laboratories. Net weight of the pack is 0,676 kg. Type 3.3 borosilicate glass offers the thermal shock resistance and chemical durability required when working with strong acids at elevated temperatures. With a diameter of 42 mm and a length of 300 mm, the tube provides practical working volume for typical Kjeldahl loads while remaining suitable for standard racks and digester blocks. This tube from manufacturer Labbox belongs to the LBG product type and is compatible with LBX Instruments equipment in the DTU3-042 series, easing integration into established Kjeldahl systems. It is intended for protein and total nitrogen workflows where robust, reusable glassware and consistent geometry are essential for reproducible digestion results.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
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Questions about Digestion tube, LBG 3.3, Ø42 x 300 mm, 10 pcs
What is this article?
Digestion tube, LBG 3.3, Ø42 x 300 mm, 10 pcs is the article on this page. Luminix Health distributes Labbox for laboratory use. It sits in Round-bottom flasks, inside Beakers & flasks, in Labware.
A round-bottom flask is the heating flask of a distillation or a reflux. The curved wall takes the heat, and the ground neck connects to a still head or a condenser. The joint size, not only the volume, has to match the rest of the set.
A beaker is an open working vessel: easy to pour, poor as a measure. An Erlenmeyer flask has a flat base and a conical wall so a liquid can be swirled without climbing out. A round-bottom flask is for heating under a condenser, because the heat meets a curved wall and the joint at the neck connects to the rest of the glassware. Borosilicate is the glass that survives the temperature change. These forms are listed under ISO laboratory glassware.
Which category should I open next?
The category is Beakers & flasks. The sub-category is Round-bottom flasks. The catalogue is Labware.
Shelves beside this one are Beakers, Erlenmeyer flasks, Reaction vessels & jacketed vessels, Flat-bottom flasks, Flasks (other) and Beaker & flask accessories.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

