The capillary material consists of bare silica with an outer layer of polyimide coating. The polyimide serves to enhance the mechanical properties of the material (a bare silica capillary without polyimide is brittle not physically durable).
The O.D. of the capillary is 365um +/- 10um.
The applied bending stress values at various bending radii are given in the following table:
The metals assay of the material is given here: