QWORK WD41989 - 20 laboratory glass test tubes 20 x 150 mm, borosilicate glass

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QWORK WD41989 - set of 20 borosilicate glass laboratory test tubes

The set contains twenty glass test tubes with an outer diameter of 20 mm and a length of 150 mm. This is classic laboratory glassware for school labs, home experiments, chemistry hobbyists, and simple analytical work. Each test tube has a round bottom and a rolled upper rim.

Material and resistance

The test tubes are made of borosilicate glass, valued for its chemical resistance and good tolerance of temperature changes. The manufacturer states a heat resistance of up to 250°C, so they can be carefully heated, for example in a bath or over a burner in a holder.

Use

• mixing and heating small amounts of substances
• observing reactions in the lab and in lessons
• short-term sample storage

The round bottom makes mixing and even heating easier, and the protruding rim helps with pouring and reduces the risk of spilling the contents.

Specifications

Laboratory test tubes and glass test tubes of this type are a staple of lab equipment. As laboratory equipment, glass test tubes require careful handling and the use of holders or racks.