After that lead to etching (Etching) binocular microscope and take photos, then make every zone and structure analysis of optical microscopy, using microscopic structure (OM).
After that, the etching (Etching), then two, then a microscopic photograph of each zone and structural analysis using microscopic optical microscopy (OM).
After the etching (Etching) was under a microscope and the pictures of every zone and structural analysis by using structural microscope. Optical microscopy (OM).