The M8311E is a variation of the M8311 series microscope with a modified magnification range intended primarily for soil studies. The medium-sized profile offers streamlined ergonomics with plenty of working room. The heavy-duty metal build and enamel coating will last for many years through rigorous use.
Viewing Head
To customize the microscope to your viewing comfort, the eyepiece spacing can be easily adjusted using a precision Siedentopf mechanism. A diopter is available on the left ocular tube to compensate for asymmetry, and the ocular tubes are angled at 30° to comfortably accommodate a seated position without neck strain. The head can also be rotated 360° to accommodate multiple users. Various eyepieces can be used to increase the overall optical magnification. The trinocular photo-port adds a dedicated mounting tube for cameras. The 23mm tube is height-adjustable to fine-tune the focus to match the eyepieces.
Optics
This model is equipped with 4X, 10X, 20X, and 40X objective lenses to provide four levels of magnification ideal for soil studies. The lenses use DIN international standards for compatibility, and are achromatically corrected to improve clarity and color accuracy. They provide a magnification range from 10X to 400X when used with the standard 10X eyepieces, ideal for viewing soil grains, bacteria, and other microorganisms.
Objective Lenses
| Magnification |
Corrections |
NA |
Immersion Medium |
Cover-glass Thickness |
| 4X |
achromatic |
0.10 |
— |
0.17mm |
| 10X |
achromatic |
0.25 |
— |
0.17mm |
| 20X |
achromatic |
0.40 |
— |
0.17mm |
| 40X |
achromatic |
0.65 |
— |
0.17mm |
Specimen Stage
The 2-layer mechanical stage provides smooth and precise movement for examination of specimen slides. The stage's low-position controls are conveniently placed near the coaxial focus knobs for a streamlined workflow. Examining specimen slides is intuitive and precise for users at any skill level. An adjustable height limit can be set to prevent damage to the lenses and specimens while focusing.
LED Illumination
The LED sub-stage lighting provides cool, energy-efficient illumination. The light-source is daylight balanced to produce natural colors for imaging. The Abbe light condenser has a high 1.25 numerical aperture for oil-immersion, and an iris diaphragm to optimize contrast and depth-of-field. The condenser holder uses rack-and-pinion height adjustment for precision control.
Packing List:
One trinocular microscope head
One microscope body
Four objective lenses: 4X, 10X, 20X, 40X
One pair 10X eyepieces
One dust cover
One sample immersion oil
Two color filters: blue, green
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