Dry Darkfield Condenser for Compound Microscopes NA 0.7-0.9

SKU: A191

Availability: Out of Stock

$114.99

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

  • Model: A191
  • Dry darkfield condenser for compound microscopes
  • NA: 0.7-0.9
  • Mounting size: 37mm in diameter

The darkfield condenser allows you to render detail in specimens that would otherwise be transparent. Using principles of light-diffraction to suppress field-illumination, the condenser illuminates edges of cells, microorganisms, and other objects. This is particularly useful for live blood analysis.

This is a darkfield condenser designed for dry use with lower magnifications. The 0.9 maximum numerical aperture will accommodate lower-magnification objective lenses with numerical apertures up to 0.9. However, it is recommended to use objective lenses with numerical apertures below 0.7 for true darkfield. For magnifications above 40X, it is recommended to use the oil condenser.

The condenser has two centering screws for properly aligning the illumination halo. This allows you to optimize the lighting on microscopes that do not have centerable condenser-holders.

This condenser is designed to work with compound microscopes with a 37mm bottom-mount condenser holder. Compatible models include: M827, M837, M8211, M8311, M824, M834

Condenser Compatibility
Condenser Mount bottom mount
Mounting Diameter 37mm
Model Compatibility M827, M837, M8211, M8311, M824, M834
Condenser Specifications
Numerical Aperture 0.7-0.9
Immersion Medium none
Centerable Optics Yes

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 darkfield condenser allows you to render detail in specimens that would otherwise be transparent. Using principles of light-diffraction to suppress field-illumination, the condenser illuminates edges of cells, microorganisms, and other objects. This is particularly useful for live blood analysis.

This is a darkfield condenser designed for dry use with lower magnifications. The 0.9 maximum numerical aperture will accommodate lower-magnification objective lenses with numerical apertures up to 0.9. However, it is recommended to use objective lenses with numerical apertures below 0.7 for true darkfield. For magnifications above 40X, it is recommended to use the oil condenser.

The condenser has two centering screws for properly aligning the illumination halo. This allows you to optimize the lighting on microscopes that do not have centerable condenser-holders.

This condenser is designed to work with compound microscopes with a 37mm bottom-mount condenser holder. Compatible models include: M827, M837, M8211, M8311, M824, M834

Condenser Compatibility
Condenser Mount bottom mount
Mounting Diameter 37mm
Model Compatibility M827, M837, M8211, M8311, M824, M834
Condenser Specifications
Numerical Aperture 0.7-0.9
Immersion Medium none
Centerable Optics Yes

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