Upright Microscopes BA310 POL The BA310 POL Series is designed for materials science professionals examining birefringent specimens from petrography and mineralogy with efficiency and repeatability. It can also be used for the synthetic materials industry where continuous observations are carried out. The BA310Pol also works particularly well in Educational applications of material professions, where low price and user-friendliness are key requirements. Main features: No lead manufacturing in full conformity with RoHS regulations New no strain EC Plan Achromatic lenses Built-in 6V/30W Full Koehler Halogen transmitted light illumination The Bertrand lens can be both focused and centered 160mm diameter pre-centered rotating stage with hard coated and chemical resistant surface A Multi-layer lens coating