Product Details
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This is the 220V version of the B490B for use only in regions which support 220V.
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.
Specifications
| Optical System | Finite |
| Mechanical Tube-length | 160mm |
| Head | Binocular, 30° incline, 360° rotatable |
| Interpupillary Adjustment | Compensation-free gemel |
| Ocular Tube Diameter | 23mm |
| Eyepieces | 10X FN 18mm 20X |
| Nosepiece | Quadruple forward |
| Objective Lenses | 4X, 10X, 40X (spring), 100X (spring, oil) |
| Focusing System | Coaxial coarse and fine focus, upper limit-stop, tension-control |
| Stage | Double-layer 140mm x 140mm |
| X-Y Translation Range | 75mm x 45mm |
| Focus Range | 30mm |
| Fine-focus Precision | 0.002mm |
| Sub-stage Condenser-holder | Rack-and-pinion |
| Condenser | Achromatic Abbe condenser, NA1.25 |
| Transmitted Illumination | 20W Halogen Incandescent |
| Power | 220VAC 50Hz |
Objective Lenses
| Magnification | Corrections | NA | 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 | 0.17mm |
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