HB Round Tubes, also known as Haemoglobin (HB) Tubes, are specialized, round, and transparent glass tubes used in laboratories and medical settings for the quantitative estimation of hemoglobin in blood. They are typically made of borosilicate glass, which is known for its durability and resistance to breakage upon heating. These tubes feature a round bottom, a beaded rim, and permanent markings or scales for accurate measurement and comparison.
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