Levenhuk 850B Binocular Microscope (110V, Matte Black)

Levenhuk 850B Binocular Microscope (110V, Matte Black)

Levenhuk 850B Binocular Microscope (110V, Matte Black)

B&H # LE850BBM MFR # 24611
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Expected availability: 7-14 business days
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Product Highlights

  • Siedentopf Interpupillary Adjustment
  • Plan 4x/10x/40xs/100xs Objectives
  • 10x WF & 20x WF Eyepieces
  • 40-2000x Magnification Range
  • Fine & Coarse Focusing
  • Halogen Lamp/1.25 NA Abbe Condenser
  • Mechanical Stage & Movable Slide Holder
  • Ball-Bearing Nosepiece Mount
  • Metal Frame with Black Finish
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Configuration: Binocular

Binocular Trinocular

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  • 1Description

Levenhuk's 850B Binocular Microscope is a lab-grade microscope that is equipped with a Siedentopf interpupillary adjustment (55-75mm), four plan achromatic objectives, and two pairs of eyepieces (10x and 20x), which together can produce high-resolution images with low color distortions at magnifications of up to 2000x. For improved image clarity, detail, and brightness, the optics are made of achromatic glass. Additionally, plan (planar) achromatic objectives offer better correction for color distortions and geometric distortions, as well as provide field flatness for 95% of the field of view. Users should take note that its 100xs objective ought to be used with a special immersion oil (included) to achieve maximum resolution and to prevent driving the objective into your slide.

To augment the optical performance, the scope offers matching mechanical features as well. Its large (6.1 x 5.5") square specimen stage provides full motion control in two dimensions via Vernier adjustments, and a lockable slide bracket. You can obtain bright and high-contrast images using its bottom 20W halogen lamp illumination system, a 1.25 NA Abbe condenser, and a built-in iris diaphragm. For obtaining precise image sharpness, the scope provides both coarse and fine focusing, adjustable using the coaxial knurled knobs with precision graduations.

Optical Performance
  • Achromatic glass optics
  • Plan 4x, 10x, 40xs, and 100xs objectives
  • 100xs objective ought to be used with the included immersion oil
  • 40xs and 100xs have spring mechanisms
  • 10x and 20x widefield eyepieces
  • 40-2000x magnification range
  • 1.25 NA Abbe condenser
Use and Handling
  • 30°-inclined binocular viewing
  • Siedentopf interpupillary adjustment: 55 - 75mm
  • External 110V outlet required
  • 20W halogen lamp with adjustable brightness
  • Built-in iris diaphragm and filter wheel
  • Blue, yellow, and green filters included
  • +5 to -5 diopter adjustment
Stage
  • 6.1 x 5.5" mechanical precision stage
  • Vernier motion controls for both axes
  • Lockable specimen bracket
Construction Details
  • Metal frame
  • Arched back serves as a handle
  • Wide base provides stability
  • Knurled focusing knobs
In the Box
Levenhuk 850B Binocular Microscope (110V, Matte Black)
  • 2 x 20x WF Eyepieces
  • Immersion Oil
  • 3 x Filters
  • Mirror
  • 110V Power Cable
  • Limited Lifetime Warranty
  • Table of Contents
    • 1Description
    Microscope Type Compound
    Eyepiece 10x WF, 20x WF
    Nosepiece Rotating ball-bearing
    Objectives 4x Plan: 0.1 NA, 1.45" (37.0 mm) working distance
    10x Plan: 0.25 NA, 0.28" (7.1 mm) working distance
    40xs Plan: 0.65 NA, 0.025" (0.63 mm) working distance
    100xs Plan: 1.25 NA, 0.006" (0.158 mm) working distance
    Head Siedentopf Interpupillary Adjustment: 55 - 75 mm
    Viewing 30°-inclined binocular
    Focuser Coaxial fine and coarse
    Coarse Focus Range: 25 mm
    Fine Focus / Accuracy: 2 µm
    Diopter Adjustment +5 to -5
    Light Source 6 V, 20 W halogen lamp
    Light Control Rheostat
    Specimen Stage Two-axis precision stage
    Dimensions: 6.1 x 5.5" / 155 x 140 mm
    Range of Motion: 2.8 x 2.0" / 70.0 x 50.0 mm
    Iris Diaphragm Range: 0.1 - 1.2" / 2.0 - 30.0 mm
    Environmental Conditions Operating Temperature: 32 - 104°F / 0 to 40°C
    Maximum Humidity: 85%
    Overall Dimensions Not provided by manufacturer
    Weight Not provided by manufacturer
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