The Iwaki DO-TUBE series gas sampling tube is a glass tube fitted with a glass stopcock, used to collect and store gas samples in laboratory work. It is available in three capacities: 125 ml, 250 ml, and 500 ml.
Each variant has different dimensions according to its capacity. The 125 ml type has an outer diameter of 40 mm and a length of 300 mm; the 250 ml type has an outer diameter of 50 mm and a length of 330 mm; and the 500 ml type has an outer diameter of 65 mm and a length of 378 mm. Choose the capacity that matches the sample volume you need.
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