AmScope, B690A-PCT, Infinity-Corrected Phase-Contrast Kohler Binocular Compound Microscope with 20W Halogen, Turret Condenser, 3D Mechanical Stage and Digital Camera 40X-1500X
B690A-PCT Includes Only:
- One binocular head
- One microscope body
- Four objective lenses: 4X, 10X, 40X, 100X
- One pair 10X eyepieces
- One pair 15X eyepieces
- One-phase contrast kit:
- Four objective lenses
- One turret condenser
- One-centering eyepiece
- One green filter
- One screwdriver
- One aluminum case
- Three color filters
- One spare halogen bulb
- One spare fuse
- One power cord (US and Canada standard)
- One dust cover
- One sample immersion oil
Features:
- 40X to 1500X magnification range using high-quality achromatic objective lenses. 10X and 15X eyepieces provide 8 unique magnification settings.
- The infinity-corrected optical system reduces distortion and improves color accuracy.
- Achromatic color-corrected lenses produce high-resolution, high-contrast images.
- The Koehler illumination system provides centered, evenly distributed lighting with a field aperture for maximum contrast and definition.
- Includes a phase-contrast kit for live-cell studies. The kit includes 4 plan-achromatic phase-ring equipped objective lenses and a 5-position turret condenser.
This is an upgraded B690 which includes a turret phase-contrast system for live-cell analysis among other things. Designed for professional biological applications, the microscope's infinity-corrected optical system ensures reliable, low-distortion magnification, with standard achromatic corrections for accurate colors and improved resolution. 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 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 15X eyepieces expand the maximum magnification to 1600X with 8 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.
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 principles, 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.
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.
