USP 751 Pharmaceutical Microscope

The USP 751 pharmaceutical microscope is used to test for metal particles in ophthalmic ointments. This microscope meets the standard requirements required to meet USP 751 guidelines. You can learn more about USP 751 test procedures here.

• Viewing Head: 45º inclined binocular stereo microscope body. Viewing head rotates 360° and locks in place by tightening a set screw.
• Eyepieces: Includes widefield, high eyepoint plan 10x eyepieces, FN 22mm. Diopter adjustable +/-5 on each eyepiece. Interpupillary adjustment from 52mm to 75mm. Eyepiece includes grid reticle 3mm (20x20) so that each square is equal to 50 microns for measuring.
• Stage Micrometer: Includes NIST certified stage micrometer with 2 scales: 1mm divided into 100 units of 0.01mm and 10mm divided into 100 units of 0.1mm.
• Objective Lenses: Zoom range of 0.8x - 5x. Microscope has click stops at 1x, 2x, 3x, 4x, and 5x for making accurate measurements.
• Zoom Ratio: 6.25: 1
• Total Magnification:  8x - 50x.
• Specimen Stage: Supplied with mechanical stage with 75mm x 50mm X/Y travel for scanning specimens. Stage includes a reversible black/ white stage plate. Stage measures 150mm x 100mm.
• Stand: Track stand has an ergonomic, low-profile base. Stand has 120mm focusing stroke with rack and pinion gears and a 76mm focusing holder.
• Working Distance: 115mm
• Focusing: Tension adjustable coarse focusing.
• Illumination: The system includes 2 light sources with the following specifications:
  • The LED ring light has four quadrant zones that can be turned on or off with push of a button, which is ideal for reducing glare. The lights have variable intensity, with brightness adjustable from 0 - 100%. 72 LED lights offer cool, bright illumination. Includes ring light adapter for the microscope head.
  • The dual pipe illuminator has variable intensity control with 90V-250V power. Each pipe contains a 5W LED light. The pipes are self-supporting and measure 18" each.
• Size & Weight: 11.8" W x 11.8" D, 12.8" H, 10 lbs. (Dimensions exclude light sources.)
• Warranty: Microscope has 5 year warranty. Light sources have 1 year warranty.