Glass Test tubes plain glass round bottom is made of borosilicate glass to reduce pH change and contaminants potentially leached from soda-lime glass. Test Tubes are well annealed, resistant to heat, and chemically stable. Glass test tubes with beaded rims are fire-polished. A chemistry test tube typically has a flat bottom, a round bottom, or a conical bottom. Some test tubes are made to accept a ground glass stopper or a screw cap. They are often provided with a small ground glass or white glaze area near the top for labelling with a pencil. Test tubes are widely used by chemists to handle chemicals, especially for qualitative experiments and assays. Their spherical bottom and vertical sides reduce mass loss when pouring, make them easier to wash out, and allow convenient monitoring of the contents. The long, narrow neck of test tube slows down the spreading of gases to the environment. Test tubes are slender containers that hold small amounts of liquid and are used in scientific experiments. They can range between 50 mm to 250 mm in length and 13 and 20 mm in width. Test tubes are usually made of glass or plastic. They can be used for chemical reactions, heating solutions, and even growing organisms. Test tubes intended for general chemical work are usually made of glass, for its relative resistance to heat. Tubes made from expansion-resistant glasses, mostly borosilicate glass or fused quartz, can withstand high temperatures up to several hundred degrees Celsius. Test tubes are used to hold, mix, and heat chemical experiments. They are used as homes for microorganisms when people want to culture (grow) them. They are also used as collections devices for things like blood samples.
Dimensions: N/A
• Volume: 10x75mm 3ml, 12x75mm 5ml, 12x150mm 10ml, 16x100mm 12ml, 16x125mm 17ml, 16x150mm 20ml, 18x125mm 22ml, 18x150mm 27ml, 20x150mm 35ml, 24x125mm 42ml, 24x150mm 50ml, 24x200mm 68ml
• Rimless: With Rim, Rimless
Test tubes are made of borosilicate glass to reduce pH change and contaminants potentially leached from soda-lime glass. They are well annealed, resistant to heat, and chemically stable.
• Volume: [’10x75mm 3ml’, ’12x75mm 5ml’, ’12x150mm 10ml’, ’16x100mm 12ml’, ’16x125mm 17ml’, ’16x150mm 20ml’, ’18x125mm 22ml’, ’18x150mm 27ml’, ’20x150mm 35ml’, ’24x125mm 42ml’, ’24x150mm 50ml’, ’24x200mm 68ml’]
• Rimless: [‘Rimless’, ‘With Rim’]
• Made of borosilicate glass
• Resistant to heat
• Chemically stable
• Fire-polished beaded rims
• Available in various sizes and rim options
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