- Please fix the quantity error in (MQC487) Quartz Capillary Tubes (Outer Circular Inner Square), O.D.: 2.2mm, I.D.: 0.4×0.4mm, Length: 25mm, (MQC366) Quartz Capillary Tubes (Square), Outer Dim.: 0.95×0.95mm, Inner Dim.: 0.35×0.35mm, Length: 100mm products