Bresser Science MPO 401 Polarization Microscope 40-1000x

Description

Engineered for orthoscopic crystallography and petrographic mineral mapping, the Bresser Science MPO 401 Polarization Microscope 40-1000x provides 40x to 1000x magnification across an infinity-corrected optical path. Widefield 10x eyepieces deliver clear framing. The 100x oil objective resolves sub-micron crystal lamellae, though immersion oil on birefringent minerals requires immediate solvent cleaning to prevent surface haze.

A 9.8 kg cast-metal stand houses a reversed quadruple nosepiece loaded with four DIN planachromatic polar objectives, an adjustable 30W halogen lamp house, and a 360-degree rotatable polarizer. The ball-bearing circular stage rotates 360 degrees with vernier calibrations and centering screws. Coaxial coarse and fine micrometric drivers provide precise Z-axis control, paired with a 30-degree inclined trinocular head offering an intermediate Bertrand lens and compensator accessory slots.

Key Features of Bresser Science MPO 401 Polarization Microscope 40-1000x

Geology researchers, pharmaceutical formulation chemists, and materials scientists deploy this research-grade polarization instrument to determine mineral extinction angles, pleochroism, and crystal birefringence. The intermediate tube houses an accessible Bertrand lens for conoscopic interference figure evaluations, while the 30W halogen light engine provides high spectral continuity.

• Infinity-corrected polarizing optical system configured for 40x, 100x, 400x, and 1000x magnification
• DIN planachromatic polar objectives included: 4x, 10x, 40x spring-loaded, and 100x oil immersion
• Trinocular viewing tube with 30-degree inclination, interpupillary adjustment, and vertical photo port
• Pair of widefield WF 10x eyepieces with integrated crosshair reticle alignment lines
• Circular 360-degree rotatable stage with precision ball bearings and 0.1-degree vernier readout
• Height-adjustable Abbe condenser with integrated 360-degree rotatable polarizer filter unit
• Intermediate tube block featuring centerable Bertrand lens, quartz wedge, and compensator sliders
• Powerful 30W transmitted halogen illumination with field diaphragm for true Köhler setup

Planachromatic Polar Optics & Conoscopic Physics

DIN planachromatic polarization objectives deliver flat-field clarity across mineral crystal boundaries, eliminating chromatic fringing under crossed polars. Engaging the intermediate Bertrand lens projects conoscopic interference figures directly into the ocular path, allowing petrographers to differentiate uniaxial and biaxial crystal classes, measure optic axial angles, and determine optical sign using quartz wedge compensators.

Circular Rotating Stage & Micrometric Gearing

The 360-degree ball-bearing stage plate turns smoothly with knurled centering screws that keep mineral grains centered under high-magnification rotation. Coaxial coarse and fine focus knobs provide 2-micron precision increments, while the heavy 9.8 kg cast-metal stand absorbs bench vibrations to maintain razor-sharp optical alignment during delicate crystal measurements.

• Centerable circular stage plate features locking clamps and vernier scales for accurate extinction tracking
• Intermediate compensator slots accept quartz wedge, lambda, and quarter-wave test plates
• Köhler illumination path with field diaphragm maximizes contrast on delicate thin sections

Bresser 5-Year Warranty & Inclusions

This high-end polarizing microscope is backed by Bresser’s 2-year standard manufacturer warranty, extendable to 5 years upon free online registration. The complete factory package contains the Science MPO 401 microscope, four planachromatic polar objectives, two WF10x eyepieces, Bertrand lens, quartz wedge, lambda plates, immersion oil, dust cover, and manual.