National 131-SPMS Compound Microscope with Mechanical Stage

National 131-SPMS Compound Microscope with Mechanical Stage

National 131-SPMS Compound Microscope with Mechanical Stage

B&H # NAICM131S MFR # 131-SPMS
National 131-SPMS Compound Microscope with Mechanical Stage

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Product Highlights

  • 20W Tungsten Illumination
  • Mechanical Stage with X-Y Controls
  • Inclined Monocular Viewing Head
  • 10x Eyepiece with Revolving Pointer
  • 4x/10x/40xR/100xR DIN Objectives
  • 40x/100x/400x/1000x Magnification
  • Achromatic/Parfocal/Parcentered Optics
  • Separate Fine/Coarse Focus Control
  • 1.25 NA Abbe Condenser Lens with Iris
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National 131-SPMS overview

  • 1Description

The 131-SPMS Compound Microscope with Mechanical Stage from National Optical is a four-objective inclined microscope designed for middle school and high school students. Achromatic DIN optics minimize image distortions and deliver consistent views on all four magnification settings. The objectives are also parfocalled and parcentered, keeping the specimen in focus and centered in the field of view when the magnification is changed. This microscope was built for reliable performance and is backed by the manufacturer's lifetime warranty.

A user-friendly design complements the range of features that make the 131 series microscope a welcome addition to classrooms. A 360° rotating monocular viewing head enables the eyepiece to be shared with multiple viewers without having to move the microscope. This configuration of the 131 has an individual focus dial for fine and coarse adjustments. The focus system also includes a slip clutch and rack stop that prevents mishandling by novice users. The 131-SPMS also features a 20W tungsten light source and a mechanical stage with low-position x-y specimen adjustment controls. National Optical engineered this compound microscope to be easy to use yet feature-rich enough to help high school students transition to more sophisticated instruments.

Optical System
  • 10x, 18mm eyepiece with revolving pointer
  • 4x,10x,40xR, 100xR color-coded DIN objectives
  • 40x,100x, 400x, 1000x magnification
  • Rotating objective turret with click stops
  • Achromatic, parfocalled, parcentered objectives
  • 360° rotating head for easier eyepiece sharing
  • 45° inclined monocular eyepiece
  • Low-position fine and coarse focusing controls
  • Elevating stage focus system
  • Slip clutch prevents over-turning
  • Tension adjustment prevents focus drift
  • Rack stop prevents damage to slides and protects lenses
  • 20 Watt tungsten illuminator with blue filter
  • 1.25 NA Abbe condenser lens
  • Iris diaphragm
  • Base-mounted On/Off switch
Construction Details
  • Mechanical stage with x-y specimen controls
  • Cast metal body with inclination joint
  • Grey enamel finish
  • 14" (36cm) height
  • 7.8 lb (3.5 kg) weight
In the Box
National 131-SPMS Compound Microscope with Mechanical Stage
  • Dustcover
  • Lifetime Limited Warranty (Excluding Bulb)
  • Table of Contents
    • 1Description

    National 131-SPMS specs

    Microscope Type Compound
    Body Type Inclined monocular
    Eyepiece 10.0x with revolving pointer
    Nosepiece 4-hole
    Objective(s) DIN 4.0x, 10.0x, 40.0xR, 100.0xR
    Focuser Low position coarse and fine focus
    Light Source 20 Watt tungsten
    Lens (Condenser) 1.25 NA Abbe
    Specimen Stage 4.75 x 4.75" (12 x 12 cm) with low-profile coaxial x-y controls
    Power Supply 110 VAC
    Height 14" (36 cm)
    Weight 7.8 lb (3.5 kg)

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