40 mm length glass fibers for small molecule crystal mounts. Available in 0.1-0.3 mm and 0.3-0.5 mm diameter glass. Simple to use. Glue the glass fiber to a brass specimen pin. Adhesives for attaching glass fibers to the brass pins can be found in Capillary Sealants. Add a very small amount of the adhesive of choice to the tip of the glass fiber. Carefully bring the fiber into solid contact with the crystal face and leave in this orientation long enough for the glue to set firmly. Position onto goniometer head and collect data.