AmScope 40X to 2500X Binocular Compound Microscope

The B490 model is a reliable and versatile microscope, ideal for veterinarians, breeders, and clinical laboratories. Designed to deliver superior optical quality and ease of use, it features advanced functions such as a compensation-free Siedentopf head, a precise focusing system with tension adjustment and vertical lock, and a double-layer mechanical stage for smooth and precise movements. This instrument can be customized for different needs with a wide variety of accessories and lenses, offering magnifications ranging from 40X to 2600X (depending on the version).

Features

• Reliability and Optical Quality: A dependable instrument designed for veterinarians, clinics, and laboratories, with high-precision optics.
• Siedentopf Head: Binocular head inclined at 30° with compensation-free interpupillary adjustment and 360° rotation, ideal for ergonomic comfort.
• Wide Magnification Range: Offers magnifications from 40X to 1000X, expandable to 2500X with 25X eyepieces for detailed analysis of cells, bacteria, and tissues.
• High-Quality Objective Lenses: DIN achromatic objectives with color correction and resolution, including 4X, 10X, 40X, and 100X (oil immersion).
• Precision Focusing System: Coaxial coarse and fine focus knobs with tension control and upper limit stop.
• Double-Layer Mechanical Stage: Smooth and precise movement for sample analysis, with easily accessible controls.
• High-Performance Halogen Illumination: Bright light with excellent color reproduction and reduced eye strain during prolonged use.
• Advanced Abbe Condenser: 1.25 numerical aperture with iris diaphragm and height adjustment via rack and pinion, optimizing contrast and depth of field.

• Specifications
• In the Box
• Required Items
• Optional Items

• Specification	Value
  Optical System	Finite conjugate
  Mechanical Tube Length	160mm
  Head	Binocular, 30° inclination, 360° rotation
  Interpupillary Adjustment	Siedentopf compensation-free
  Eyepiece Diameter	23mm
  Eyepieces	10X, 25X
  Objectives	Standard DIN
  Parfocal Objective Distance	45mm
  Objective Mounting Thread	RMS 20.32mm
  Nosepiece	Quadruple
  Focusing System	Coaxial coarse and fine focus, upper limit stop, tension control
  Focus Range	30mm
  Fine Focus Division	0.002mm
  Stage Design	Double-layer with calibrator
  Stage Dimensions	140mm x 140mm
  X-Y Translation Range	75mm x 45mm
  Transmitted Illumination	20W Halogen
  Condenser	Abbe condenser with iris diaphragm, NA1.25
  Condenser Holder	Rack and pinion
  Power Supply	110VAC 60Hz

  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

• • One Binocular Head
  • One Microscope Body
  • Four Objective Lenses: 4X, 10X, 40X, 100X
  • One Pair of 10X Eyepieces
  • One Pair of 25X Eyepieces
  • One Power Cord (Standard for the U.S. and Canada)
  • One Dust Cover
  • Three Color Filters (Blue, Green, Yellow)
  • One Spare Halogen Bulb
  • One Spare Fuse
  • One Sample Bottle of Immersion Oil
• • None
• • Additional objectives with higher or lower magnifications
  • Color filters for contrast (blue, green, yellow, etc.)
  • Specialized condensers (dark field, phase contrast, Köhler)
  • Digital cameras for image and video capture
  • Adapters for mobile devices
  • Motorized or high-precision mechanical stage
  • Calibration grids for quantitative measurements
  • Sample preparation kit (slides, cover glasses, tools)
  • Additional or enhanced lighting (LED, hal ogen, fluorescent)
  • High-quality immersion oils
  • Hard carrying cases
  • Cleaning accessories (cloths, brushes, blowers)
  • Backup power supplies or power adapters
  • Reference manuals and specialized user guides