OMAX M8311 Series Trinocular Phase-Contrast Microscope 40X-2500X Magnification with Plan Optics

SKU: M8311Z-PHB1

Availability: In Stock

$1,063.99

The Higher the Magnification - The More Detail You'll See

Magnification can represent combinations of lenses including objective, ocular, and auxiliary lenses. The magnification ranges described here may include these combinations.

Compound Microscopes may include additional eyepieces (ocular lenses) to expand the total magnification range.

Stereo and other Inspection Microscopes may include additional eyepieces and auxiliary lenses including Barlow lenses to expand the total magnification range.

Camera Types

Various types of cameras are available. Cameras intended to be used with computers will use USB, wi-fi, or LAN to connect to the computer, and typically include specialized software. Cameras with HDMI, VGA, or analog video interfaces can be attached directly to a compatible display device such as a monitor or television, and do not require a computer to operate.

Camera Pixels

Also referred to as camera resolution, the number of pixels represents the maximum size of images which can be displayed or recorded by a camera. The value is displayed using MP (megapixels).

Key Features

  • 40X to 2500X magnification range using brightfield objective lenses, and 100X to 2500X magnification using plan-achromatic phase-contrast objective lenses
  • Along with the standard brightfield lenses, this phase-contrast version of the M8311 includes specialized plan-achromatic objective lenses equipped with phase-rings, and a turret condenser with brightfield and phase-contrast settings.
  • Students and professionals alike will appreciate the compact yet heavy-duty design.
  • Features include a Siedentopf trinocular head for precise adjustments, a 2-layer mechanical stage with low-position controls, and coaxial coarse and fine focus for ergonomics and an efficient workflow.
  • The super-bright LED provides cool, daylight-balanced illumination.
  • The trinocular viewing head offers an additional port for mounting a camera.

The M8311 trinocular compound microscope is designed for educational and professional use. The medium-sized profile offers streamlined ergonomics with plenty of working room. The heavy-duty metal build and enamel coating will last for many years through rigorous use. This phase-contrast model includes a specialized turret condenser and objective lenses used to enhance details in low-contrast specimens such as live cells and microorganisms.

Viewing Head

To customize the microscope to your viewing comfort, the eyepiece spacing can be easily adjusted using a precision Siedentopf mechanism. A diopter is available on the left ocular tube to compensate for asymmetry, and the ocular tubes are angled at 30° to comfortably accommodate a seated position without neck strain. The head can also be rotated 360° to accommodate multiple users. Various eyepieces can be used to increase the overall optical magnification. The trinocular photo-port adds a dedicated mounting tube for cameras. The 23mm tube is height-adjustable to fine-tune the focus to match the eyepieces.

Optics

This model includes four brightfield objective lenses and four phase-contrast objective lenses. The brightfield lenses provide a magnification range from 40X to 1000X when used with the standard 10X eyepieces, while the phase-contrast lenses provide a 100X to 1000X range. Additional 25X eyepieces are included to expand the maximum magnification to 2500X.

Objective Lenses

Magnification Corrections NA Immersion Medium Cover-glass Thickness
Brightfield
4X achromatic 0.10 — 0.17mm
10X achromatic 0.25 — 0.17mm
40X achromatic 0.65 — 0.17mm
100X achromatic 1.25 oil 0.17mm
Phase Contrast
10X plan-achromatic ph 0.25 — 0.17mm
20X plan-achromatic ph 0.40 — 0.17mm
40X plan-achromatic ph 0.65 — 0.17mm
100X plan-achromatic ph 1.25 oil 0.17mm

Specimen Stage

The 2-layer mechanical stage provides smooth and precise movement for examination of specimen slides. The stage's low-position controls are conveniently placed near the coaxial focus knobs for a streamlined workflow. Examining specimen slides is intuitive and precise for users at any skill level. An adjustable height limit can be set to prevent damage to the lenses and specimens while focusing.

LED Illumination

The LED sub-stage lighting provides cool, energy-efficient illumination. The light-source is daylight balanced to produce natural colors for imaging. The Abbe light condenser has a high 1.25 numerical aperture for oil-immersion, and an iris diaphragm to optimize contrast and depth-of-field. The condenser holder uses rack-and-pinion height adjustment for precision control.

Phase Contrast

A phase-contrast kit is included with a 5-position turret condenser and 4 plan-achromatic phase-contrast objective lenses. Phase contrast is used to reveal detail in indistinct objects, such as unstained cells and microorganisms that would otherwise appear invisible. By using a combination of specialized objective lenses and a modified light condenser, these invisible objects can be visualized by manipulating variations in phase. This turret condenser allows you to easily rotate through the brightfield and four phase-contrast settings (10X, 20X, 40X, 100X). Each phase-contrast setting has a centerable annulus for proper alignment. Each of the phase-ring equipped objective lenses has plan-achromatic corrections for improved color and resolution, as well as edge-to-edge sharpness.

Packing List:

  • One trinocular microscope head
  • One microscope body
  • Four objective lenses: 4X, 10X, 40X, 100X
  • One pair 10X eyepieces
  • One pair 25X eyepieces
  • One dust cover
  • One sample immersion oil
  • Two color filters: blue, green
  • One phase-contrast turret condenser
  • Four phase-contrast objective lenses: 10X, 20X, 40X, 100X
  • One telescopic centering eyepiece
  • One green filter
  • One screwdriver
    • Head Type Trinocular
    Illumination Type Transmitted
    Light Source LED
    Microscope Format Upright
    Objective Lenses 4X, 10X, 20X, 40X, 100X
    Ocular Diameter 23.2mm
    Optical Corrections Achromatic/Plan Achromatic Ph
    Optical System Finite
    Power Compatibility 100-240VAC 50/60Hz

    Omax products are warrantied against
    manufacturer’s defects in material and workmanship from the original date of
    purchase, for the following years: 

    • Five Year Warranty for Microscopes: All our microscopes come with
    a five (5) year factory warranty against manufacturing defects, covering labor
    and parts. 

    • One Year Warranty for Binoculars: All our Binoculars come with a One (1) year factory warranty
    against manufacturing defects, covering labor and parts. 

    • One Year Warranty for Accessories: All our microscope accessories (USB cameras,
    illuminators, illumination, dust covers, and etc.) come with a one (1) year
    warranty, except when specified in the description.

    Warranty does not apply for
    consumable accessories and parts such as bulbs, batteries, fuses, cords,
    optical components or any add-on accessories such as mechanical specimen
    holders that are not built into the microscope stage as an integral part of the
    original manufacture, etc. Warranty does not cover microscopes, lenses cameras
    or other accessories that have become inoperable due to dirt or damage due to
    misuse or lack of maintenance. 



    Note: Buyers are responsible for return shipping and handling cost for warranty
    services. Our warranty covers parts and labor only.

    The M8311 trinocular compound microscope is designed for educational and professional use. The medium-sized profile offers streamlined ergonomics with plenty of working room. The heavy-duty metal build and enamel coating will last for many years through rigorous use. This phase-contrast model includes a specialized turret condenser and objective lenses used to enhance details in low-contrast specimens such as live cells and microorganisms.

    Viewing Head

    To customize the microscope to your viewing comfort, the eyepiece spacing can be easily adjusted using a precision Siedentopf mechanism. A diopter is available on the left ocular tube to compensate for asymmetry, and the ocular tubes are angled at 30° to comfortably accommodate a seated position without neck strain. The head can also be rotated 360° to accommodate multiple users. Various eyepieces can be used to increase the overall optical magnification. The trinocular photo-port adds a dedicated mounting tube for cameras. The 23mm tube is height-adjustable to fine-tune the focus to match the eyepieces.

    Optics

    This model includes four brightfield objective lenses and four phase-contrast objective lenses. The brightfield lenses provide a magnification range from 40X to 1000X when used with the standard 10X eyepieces, while the phase-contrast lenses provide a 100X to 1000X range. Additional 25X eyepieces are included to expand the maximum magnification to 2500X.

    Objective Lenses

    Magnification Corrections NA Immersion Medium Cover-glass Thickness
    Brightfield
    4X achromatic 0.10 — 0.17mm
    10X achromatic 0.25 — 0.17mm
    40X achromatic 0.65 — 0.17mm
    100X achromatic 1.25 oil 0.17mm
    Phase Contrast
    10X plan-achromatic ph 0.25 — 0.17mm
    20X plan-achromatic ph 0.40 — 0.17mm
    40X plan-achromatic ph 0.65 — 0.17mm
    100X plan-achromatic ph 1.25 oil 0.17mm

    Specimen Stage

    The 2-layer mechanical stage provides smooth and precise movement for examination of specimen slides. The stage's low-position controls are conveniently placed near the coaxial focus knobs for a streamlined workflow. Examining specimen slides is intuitive and precise for users at any skill level. An adjustable height limit can be set to prevent damage to the lenses and specimens while focusing.

    LED Illumination

    The LED sub-stage lighting provides cool, energy-efficient illumination. The light-source is daylight balanced to produce natural colors for imaging. The Abbe light condenser has a high 1.25 numerical aperture for oil-immersion, and an iris diaphragm to optimize contrast and depth-of-field. The condenser holder uses rack-and-pinion height adjustment for precision control.

    Phase Contrast

    A phase-contrast kit is included with a 5-position turret condenser and 4 plan-achromatic phase-contrast objective lenses. Phase contrast is used to reveal detail in indistinct objects, such as unstained cells and microorganisms that would otherwise appear invisible. By using a combination of specialized objective lenses and a modified light condenser, these invisible objects can be visualized by manipulating variations in phase. This turret condenser allows you to easily rotate through the brightfield and four phase-contrast settings (10X, 20X, 40X, 100X). Each phase-contrast setting has a centerable annulus for proper alignment. Each of the phase-ring equipped objective lenses has plan-achromatic corrections for improved color and resolution, as well as edge-to-edge sharpness.

    Packing List:

  • One trinocular microscope head
  • One microscope body
  • Four objective lenses: 4X, 10X, 40X, 100X
  • One pair 10X eyepieces
  • One pair 25X eyepieces
  • One dust cover
  • One sample immersion oil
  • Two color filters: blue, green
  • One phase-contrast turret condenser
  • Four phase-contrast objective lenses: 10X, 20X, 40X, 100X
  • One telescopic centering eyepiece
  • One green filter
  • One screwdriver

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