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A test tube, also known as a culture tube or sample tube, is a common piece of laboratory glassware consisting of a finger-like length of Quartz tubing, open at the top and closed at the bottom.
Fused Quartz offers a number of unique properties that make it ideal in a variety of applications where other materials prove to be problematic. These properties include: Extreme Hardness, extremely high chemical purity, high softening temperature (1670°C), optical transparency over a wide range, Resistance to High Temperature, low thermal expansion, excellent thermal shock, High Operating Temperature: 1050OC Continuous, 1350OC Intermittentand high resistance to a large number of elements and compounds, Resistant to Sulphuric Acid, Nitric Acid and Hydro Chloric Acid.