In order to simplify the filling of mark tubes we offer special rods and fibres on the tip of which you can introduce the sample into the mark tube. Fibres with a diameter of less than 0.1 mm can even be introduced into the smallest mark tubes.
This type of rod we produce mainly of borosilicate glass 3.3. If you would like to have fibres and rods to melt down, we can suit them to the material of the mark tube.