AmScope B690C-PL Binocular Biological Microscope with 2500X Magnification Incandescent

The B690-PL is designed for professional biological applications. Its infinity-corrected optical system ensures reliable, low-distortion magnification, with plan-achromatic corrections for accurate colors, excellent field flatness and edge-to-edge sharpness. The halogen illumination system provides low-fatigue, evenly-distributed light for maximum contrast and definition. This model is a popular choice for veterinarians and university laboratories.

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 objective turret provides instant access to 4 magnification levels to easily focus in on minute details from 40X to 1000X. Additional 25X eyepieces expand the maximum magnification to 2500X with 6 unique levels. This covers magnifications needed for studying hair follicles, cells, and bacteria. The turret's reversed orientation provides more working room above the stage. These high-quality lenses are achromatically corrected to improve resolution and color accuracy, with planatic flat-field correction to provide edge-to-edge sharpness.

The large 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.

Built on Koehler illumination principals, the sub-stage lighting provides evenly-distributed light for optimal contrast. The halogen light-source provides bright illumination with a lower color-temperature for decreased fatigue when used for long periods. 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, and is centerable for proper alignment. The illuminator's field lens provides an iris diaphragm to control light-spread, optimizing contrast and definition in specimen features.

Features:

• 40X to 2500X magnification range using high-quality plan-achromatic objective lenses. 10X and 25X eyepieces provide 6 unique magnification settings.
• The infinity-corrected optical system reduces distortion and improves color accuracy.
• Plan-achromatic lenses produce high-contrast images with edge-to-edge sharpness.
• The Koehler illumination system provides centered, evenly-distributed lighting with a field aperture for maximum contrast and definition.

Packing List:

• One binocular head
• One microscope body
• Four objective lenses: 4X, 10X, 40X, 100X
• One pair 10X eyepieces
• One pair 25X eyepieces
• Three color filters
• One spare halogen bulb
• One spare fuse
• One power cord (US and Canada standard)
• One dust cover
• One sample immersion oil