EXC-121 Microscope

Educational & Hobbyist

ACCU-SCOPE EXC-121 Monocular Medical Microscope


The EXC-121 Series from ACCU-SCOPE is a great monocular microscope choice for educational institutions and serious hobbyists. It is the largest/heaviest/sturdiest of our monocular compound microscopes, making it better suited for High School, College, and adult users. ACCU-SCOPE'S head-to-toe 5-year warranty makes it a sure bet. (See Documents tab for warranty details.)

Where Value Meets Performance

Engineered for clinical and classroom applications, ACCU-SCOPE's EXC-121 Series is equipped with sharp, high contrast objectives on a rugged, die-cast aluminum frame designed for years of heavy use. Featuring ergonomic focusing controls, all brass gears and the widest field of view eyepieces in its class, the EXC-121 Series delivers exceptional value and performance for an entry level clinical microscope.

Optical Excellence

Developed specifically for the educational and clinical markets, the EXC-121 Series objectives provide sharp, clear images with front lens surfaces that are flush and easy to clean. Objectives are available in achromat, semi-plan, plan achromat, and plan phase.


The low positioned coaxial focusing mechanism provides complete ergonomic comfort to users during extended viewing periods. The coaxial focusing controls allow the user to rest their hand on the counter while focusing the microscope, allowing for maximum comfort.


The LED illuminator allows for tremendous energy savings, the EXC-121 Series provides superb brightness.

  • DIN Optics to 400 or 1000x (Depending upon model)
  • Binocular viewing head
  • Head inclined 30°, rotatable 360°
  • Reversed quadruple nosepiece
  • Rackless Mechanical stage w/ low position coaxial controls
  • Coaxial coarse and fine focusing controls
  • Variable LED illuminator
  • Dust cover, power cord and manual
  • Microscope Dimensions (LWH): 10" x 7.8" x 14.5"
  • Weight: 15 lbs


Models Available

  • EXC-121 has four objectives: 4x, 10x, 40x, and 100x oil, yielding total magnifications of 40x, 100x, 400x, 1000x
  • EXC-121-3 has three objectives: all but the 100x (1000x)

Upgrades Available

  • Photo Port - provides a camera port in the top of the microscope. (Check out the ACCU-CAM 300 in the accessories tab.)
  • Plan Objectives, which are high quality optics, flatfield from edge to edge

Viewing Head

  • Choice of Monocular or Monocular with Photo Port
  • 30° Inclined, Rotatable 360°
  • An optional 45° binocular viewing head is available
  • Binocular and Trinocular are available HERE


  • Choice of achromat, plan or plan phase objectives
  • Standard configurations include 4x, 10x, Semi-plan 40xR* and 100xR* oil (*spring-loaded)
  • Eyepieces are widefield 10x with 18.5mm field of view
  • A pointer is standard in one eyepiece
  • Eyepieces are locked-in to prevent classroom tampering and accept 19mm reticles
  • Nosepiece is rear-facing, quadruple, ball bearing with positive click stops to ensure parcentration
  • Anti-mold

Focusing System

  • Coaxial coarse and fine focus controls
  • Adjustable tension control
  • All-metal gears


  • Cast alloy aluminum
  • Built-in fixed focus stops which allow for rapid focusing while protecting specimens
  • Built-in carry handle and cord hanger

Stage Size

  • 150mm x 139mm
  • X-Y movement range of 75mm x 32mm


  • N.A. 1.25 Abbe condenser
  • Rack and pinion gears
  • Iris diaphragm
  • Swing-out filter holder


  • Variable LED illumination
  • 20,000 Bulb life rating
  • Power supply 110-240v

Accessories Included

  • Dust cover
  • Immersion oil
  • Instruction manual

Optional Accessories

  • 2x Semi-plan objective with auxiliary lens
  • Plan 20x, 50xR oil, 60xR, 100xR dry, and 100xR water immersion objectives
  • WF20x eyepieces
  • 21mm eyepiece reticles
  • Turret phase contrast set
  • Darkfield objectives and condenser
  • Microscope carry case


  • 10" (L) x 7.8" (W) x 14.5" (H)
  • 15 lbs.


  • ISO 9001: 2018
  • ISO 14001: 2018
  • UL approved
  • CE anti-mold


  • 5 year limited warranty for parts, labor and electronic components
  • 1 year warranty on LED bulb

Ordering Information

Online Ordering

Click HERE for online ordering.

Phone, Fax, Purchase Order, & Mail Ordering

Click HERE for other than online ordering.

Shipping Rates

Rates in the Continental USA will be shown in your shopping cart. Costs are higher to Alaska, Hawaii, and locations outside the USA. Email us your shipping address and equipment list for rates outside the lower 48.

Quantity Pricing is available.

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