jual alat ukur BestScope BS-5040B Polarizing Siedentopf Binocular

The BestScope BS-5040B Polarizing Siedentopf Binocular Compound Microscope has a pair of 10x widefield eyepieces, a Bertrand lens, a reverse-mounted nosepiece with four strain-free infinity plan objectives, halogen illumination, coaxial nested coarse and fine focus, a 1.25 NA Abbe condenser with blue filter, and a rotating round stage. The built-in Bertrand lens enables viewing of conoscopic images (interference figures). The Siedentopf binocular head has a pair of eyepieces with interpupillary adjustment, fixed inclination to reduce eye and neck strain, and rotation capability to provide a more comprehensive view and enable sharing. A Siedentopf binocular head enables the viewer to change the interpupillary distance without changing the tube length, eliminating the need to refocus the image. A reverse-mounted nosepiece keeps objectives out of the way to prevent damage and contamination, and to enable more secure slide handling. Infinity plan objectives provide focus over the entire range of the viewing field, and a longer working distance for improved focus when auxiliary components are utilized. Strain-free objectives minimize distortion. The 20xS and 40xS objectives are retractable and spring-loaded to prevent damage to the slide or objective when focusing. A transmitted polarizing microscope uses transmitted light and a polarizing unit to enhance contrast for viewing thin sections of minerals, polymers, crystals, and particulates in geological, metallurgical, chemical, pharmaceutical, and industrial applications.