The B490 is our hardest-working go-to microscope. The top choice for veterinarians, breeders, and clinics, this instrument has proven reliability and optical quality. It boasts features such as a compensation-free Siedentopf head, smooth stage translation, and a precision focus system with easy tension-adjustment and vertical-lock.
The 490 series offers a wide range of optional accessories to expand the functionality. The magnification range can be expanded with a large selection of objective and ocular lenses. Specialized condensers are available for dark-field and phase-contrast applications, ideal for bloodwork, fluid-analysis, and pathology.
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 both ocular tubes 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 16X eyepieces expand the maximum magnification to 1600X with 8 unique levels. This covers magnifications needed for studying hair follicles, cells, and bacteria. These high-quality lenses are achromatically corrected to improve resolution and color accuracy.
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.
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.
Specifications: | ||||
---|---|---|---|---|
Optical System | Finite-conjugate | |||
Mechanical Tube Length | 160mm | |||
Head | Binocular, 30° incline, 360° rotatable | |||
Interpupillary Adjustment | Siedentopf compensation-free gemel | |||
Ocular Diameter | 23mm | |||
Eyepieces | 10X, 16X | |||
Objective Lenses | DIN standard | |||
Objective Parfocal Distance | 45mm | |||
Objective Mounting Thread | RMS 20.32mm | |||
Objective Turret | quadruple | |||
Focusing System | Coaxial coarse and fine focus, upper limit-stop, tension control | |||
Focus Range | 30mm | |||
Division of Fine Focus | 0.002mm | |||
Stage Design | Double-layer with caliper | |||
Stage Dimensions | 140mm x 140mm | |||
X-Y Translation Range | 75mm x 45mm | |||
Transmitted Illumination | Variable-intensity 1.4W LED (7 x 0.2W) | |||
Condenser | Abbe condenser with iris diaphragm, NA1.25 | |||
Sub-stage Condenser-holder | rack and pinion | |||
Power | 110VAC 60Hz | |||
Objective Lenses:
Magnification |
Corrections |
NA |
Immersion Medium |
Cover-glass Thickness |
---|---|---|---|---|
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 |
Packing List:
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 sales@microscopecentral.com 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.