The BRESSER Science MPO 401 Microscope uses polarized light. This light has a preferred vibration plane of light waves. Polarized light allows anisotropic objects to be viewed, whose observable properties are depending on the direction, “in a new light”. This works well with crystals, animal hairs, feathers, muscles, nerve fibers and vegetable cell walls, all which have a preferred direction of its biomolecules, and shows structures which were hidden in a normal bright-field image. Images made by polarized light are often characterized by fantastic coloring. Polarized microscopes are used primarily in mineralogy, geology, biology and medicine. In order to change the object’s direction in a controlled way, the Science MPO 401 has a round, center-adjustable and fully rotatable object stage with degree scale. The illumination and observation unit contains a halogen bulb lamp (20 W) with a dimmer, the field diaphragm (used to achieve the Köhler illumination), the 360° rotatable polarizer (for the production of polarized light), centering implements for the objectives and the polarized light analyzer. The analyzer attachment is for receiving the 360° rotatable analyzer and optional available slips (Amici-Bertrand lens for conoscopy; quartz wedge, lambda-, lambda-4 plate used in order to get special color effects). The wide field eyepieces (WF10x), which are available as an option, are placed at the trinocular head with an inclination of 30°. These have an eye-relief adjustment as well as diopter adjustment. The images are bright, true colored, sharp and rich in details. Includes: 2x WF10x eyepieces; 4 DIN-objectives (PL4x, PL10x, PL40x, PL100x oil); 360° rotatable mechanical stage; phase shifter; Amici-Bertrand lens; polarizer/analyzer combination; dust cover; power cable.With the BRESSER Science IVM 401, the usual direction of illumination and observation is inverted: You illuminate the sample from above and observes it from below. This type allows for the microscopy of sediments and transparent living organisms, which are found at the bottom of a liquid medium. For example, plankton or protozoa at the ground of culture bottles, which should not turned over, can be investigated. This special microscope is excellent for public water departments, research institutes and universities; for medical treatment; animal husbandry; agriculture; limnology etc. The Science IVM 401 has a large fixed object plate with moving stage system, a powerful halogen bulb illumination (30 W) with dimmer and field diaphragm, and a fourfold nosepiece. The trinocular head is turn able and has 30° inclined eyepiece tubes and a photo tube. There are eye relief adjustment and diopter adjustment, as well as coaxial coarse and fine focusing knobs. Includes: 4 DIN-objectives; 2x WF10x eyepieces; 1.25 Abbe-Condenser with Iris diaphragm and filter holder; dust covers; field diaphragm; power cable; immersion oil. Optional accessories: Wide field eyepieces (WF10x, WF16x), plan achromatic DIN objectives (10x, 25x, 40x), plan achromatic DIN phase contrast objectives with annular diaphragm (10x, 25x, 40x), condenser (working distance 30 mm; with phase contrast), condenser (working distance 70 mm), different filters (blue, green, ground glass) and specimen holders for rectangular or round culture utensils.
