The harder embedding media needed to support the tissue during the sectioning process and subsequent observation in the electron microscope necessitates a blade that is precise and robust enough to cut the very thin sections on the ultramicrotomes. Freshly broken glass with its super sharp edge provides an excellent solution for cutting the ultra-thin sections necessary.
In addition, the glass knife is preferred for teaching, trimming, and for those unknown samples which may have inclusions that can instantly damage your diamond edge.
The GKM2 glass knife maker produces the most reproducible straight-edged glass knives available. With its balanced break methodology coupled with a pressure detector readout for precise reproducibility of breaking pressure, the GKM2 is the favored knifemaker for many laboratories. The GKM2 is also the only glass knife maker in the market capable of producing up to 12mm thick glass knives.
The pressure sensor and digital display enable the operator to produce accurate knives with each controlled break. Precision micrometers accurately position glass squares for the final break into knives.