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Flasks are lot certified and supplied with a glass penny head stopper Made from Borosilicate 3.3 expansion glass Calibrated 'to Contain' Batch Certificate included The red stripe makes it easier to see the meniscus.
Capacity : 250 mL
O.D. x H : 80 x 220 mm
Neck Size : 15 mm I.D.
Stopper No. : 16
Tolerance : +/-0.12 mL