Dark Field Research Microscope

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Dark Field Research Microscope
Dark Field Research Microscope

Dark Field Research Microscope

Category: Biology

Model No: B-40

Dark Field Research Microscope

Product Description

Dark Field Research Microscope

  • This principle is applied in dark?eld (also called darkground) microscopy, a simple and popular method for making unstained transparent specimens clearly visible. Such objects often have refractive indices very close in value to that of their surroundings and are dif?cult to image in conventional bright?eld microscopy. For instance, many small aquatic organisms have a refractive index ranging from 1.2 to 1.4, resulting in a negligible optical difference from the surrounding aqueous medium. These are ideal candidates for dark?eld illumination.

  • Dark?eldillumination requires blocking out of the central light which ordinarily passes through and around (surrounding) the specimen, allowing only oblique rays from every azimuth to "strike" the specimen mounted on the microscope slide. The top lens of a simple Abbe dark?eld condenser is spherically concave, allowing light rays emerging from the surface in all azimuths to form an inverted hollow cone of light with an apex centered in the specimen plane. If no specimen is present and the numerical aperture of the condenser is greater than that of the objective, the oblique rays cross and all such rays will miss entering the objective because of their obliquity. The ?eld of view will appear dark.

  • Body                : Main body all parts die casted to provide long life, Slide and                              objective protection via upward stage stopper.
  • EyePieces        : wide ?eld 10x, 15x pairs
  • Objectives        : semi-plan achro objectives 4x, 10x, 40/45x s. L. 100x oil                                              immersion (s. L.).withclarity
  • Dark Field Objective 100x(The dark?eld condenser/objective pair illustrated above) and Dark ?eld Condensor SET Eight magni?cation con?gurations: 40x, 60x, 100x, 150x, 400x, 600x, 1000x, 1500x. clarity glass optics with anti- fungus, anti re?ection coating. All objectives are perfectly para-focused with no image shift thus reproducing sharp and clear images.
  • Binocular Observation Head: inclined at 45, rotateable through 360, interpupilary distance adjustment ring 54-74mm, dioptric adjustment ring on the left having adjustable dioptric scale.Dual side focusing controls
  • Focusing          :Coarse and ?ne focusing controls with single KNOB for precise focusing of the specimen. CONDENSER ; ABBE CONDENSER N. A. 1. 25 HAVING ASPHERICAL LENS, adjustable iris diaphragm Nosepiece  :quadruple nosepiece revolves on                                                           ballbearing
  • Illumination        : LED, with Smps based power supply i.ecompatiable for wide                                     voltage range from 100v to 220volts
  • Packing            : Nicely Packed In Styrofoam Enclosure WithBox.
  • Others              : BREAKAGES ARE NOT COVERED INWARRANTY
  • Warranty          :12 Months For warranty-related claims, please contact the brand                                servicecentre.
  • Package dimen:54 x 44 x 30 cm weight: 5.5 kg

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