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OMAX 40X-400X Inverted Phase Contrast Infinity PLAN Trinocular Biological Microscope

OMAX 40X-400X Inverted Phase Contrast Infinity PLAN Trinocular Biological Microscope


Regular price $3,799.99
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OMAX 40X-400X Inverted Phase Contrast Infinity PLAN Trinocular Biological Microscope
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This microscope system is a professional grade trinocular biological inverted microscope with super widefield eyepieces, and long working distance PLAN objectives. It is designed for the applications involving biological specimens in large vessels. This microscope will allow you to observe specimen in culture flasks, Petri dishes or other similarly sized containers, and it comes with long working distance PLAN objectives, high quality phase contrast objectives, super widefield eyepieces, 45 degree inclined trinocular head. The microscope offers 40X, 100X, 200X and 400X magnification settings and phase contrast microscopy features. With a long working distance condenser and high-contrast phase contrast objectives, it provides high quality clear microscopy images of the cells of your specimen. It is an ideal microscope for observing living cells in micro research laboratories, universities, or medical offices.


  • High quality optical glass elements
  • Inverted infinity optical system
  • Condenser removable for large working room, 72mm long working distance
  • Bright field and phase contrast observation
  • Photo ports for capturing picture and video
  • Specifications:

  • Model: K832INV
  • Total Magnification: 40X, 100X, 200X, 400X
  • Eyepiece
    - A pair of 10X eyepieces with 20mm wide field of view
  • Objective
    - Infinity plan achromatic 4X/0.10, ∞/1.2mm, WD 22.3mm
    - Infinity plan phase contrast 10X/0.25, ∞/1.2mm, WD 6.2mm
    - Infinity plan phase contrast 20X/0.40, ∞/1.2mm, WD 3.1mm
    - Infinity plan phase contrast 40X/0.55, ∞/1.2mm, WD 2.2mm
  • Viewing Head
    - Siedentopf binocular, 45° inclined viewing head
    - Interpupillary distance adjustable: 50mm ~ 70mm ( 2" ~ 2-3/4" )
    - Inner diameter of ocular tube: 30mm
  • Nosepiece
    - Revolving, quintuple
  • Stage
    - Plain stage, dimension 230mm x 170mm
    - Mechanical stage attachment: X-Y stroke 120mm x 80mm
    - Stage extension plate: working surface 189mm x 70mm
    - Stage insert plate: glass, Φ108mm
    - Slide holder plate: metal, 128mm x 86mm, slot for slide 76mm x 26mm, opening for petri dish Φ54mm
    - Terasaki holder plate: metal, 138mm x 86mm, slot for Terasaki plate 81mm x 56mm, opening for petri dish Φ65mm
    - Petri dish holder plate: metal, 81mm x 56mm, opening for petri dish Φ35mm
  • Focusing
    - Coaxial fine and coarse knobs on both side
    - Tension adjustable
  • Illumination
    - Transmitted illumination
    - 6V/30W halogen bulb
    - Light intensity is adjustable
    - Aperture
    iris diaphragm
    - Condenser: working distance 72mm, NA0.3, removable for large working room
  • Photo port
    - Upper port: light split 20/80 (eyepiece / photo)
    - Lower port: light split 0/100 (eyepiece / photo)
    - Camera adapter with C-mount
    - Camera adapter with standard 23.2mm port
  • Color filter
    - Diameter Φ45mm
    - LBD light balancing filter
    - IF550 interference filter (green)
    - SIF800 Inrared-eliminating filter (yellow)
  • Phase contrast accessory
    - Phase contrast slider plate, center adjustable
    - Centering telescope
  • Power
    - AC110V
  • Weight
    - Net weight: 11.1kg ( 24 lb 6 oz)
    - Shipping weight: 24.6 kg ( 54 lb 1 oz)
  • Packing List:

  • Microscope frame with built-in binocular viewing head
  • Phase contrast slider
  • Center telescope
  • Mechanical stage
  • Stage extension
  • Stage glass insert plate
  • Stage slide holder plate
  • Stage Terasaki holder plate
  • Petri dish holder plate
  • Camera adapter ( C-mount )
  • Camera adapter ( 23.2mm )
  • 3 color filters
  • A pair of eyepieces (installed)
  • 4 objectives (installed)
  • Power cord
  • Dust cover
  • 3 Allen keys
  • Reviews

    Shipping & Returns


    We provide complimentary UPS ground shipping for online orders exceeding $99 to all destinations within the Continental U.S.A. Most items are drop-shipped from one of our suppliers. Due to the highly configurable nature of microscopes and our vast product portfolio, lead times can vary. Should you need expedited shipping, kindly reach out to us for a personalized quote and to ensure your availability.

    We welcome international orders on a case-by-case basis. Buyers are accountable for any international duties, taxes, brokerage, or import fees that may be incurred. We encourage customers to reach out to us at prior to purchase, to ensure the microscope will meet their needs and expectations.


    For most items, we accept returns within 14 days of purchase, with the buyer responsible for covering all shipping charges. Please refer to our Full Returns Policy for further details. (Note: Many returns stem from purchasing the wrong product for a specific application. To prevent this, we recommend consulting a Microscope Central expert before making your purchase.

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