All in One, simple and practical

Streamlined appearance and focus-adjustable base equipped with multi-angle lighting. The operation interface is simple and intuitive. You can move the specimen, focus, or even switch and adjust the light source without leaving your eyes. Such a smooth and natural operating feel coupled with the high-quality stereomicroscope optics from Zeiss, Germany, creates this ZEISS STEMI 305 EDU, ready for your work and exploration at any time.

Premium stereo optics from ZEISS

Zoom knob to enlarge, zoom ratio 5:1, magnification 0.8x ~ 4x, complete with freeze-frame design.

Suitable for laboratories, biology classrooms, industrial production lines and other occasions. Using Greenough optical design, the image at the same position is imaged to both eyes through two optical paths, creating a three-dimensional feeling that still looks like direct vision after magnification.

Integrate a variety of lighting to suit various tasks

It has vertical downlight, lateral oblique light and transmitted bottom light. Multiple lighting options, corresponding to different observation situations. Observing the image patterns of samples under different light sources is also very suitable for observing the reflection of crystals from light sources at different angles. There is an adjustment button on the right side of the microscope holder, which can be clicked and rotated to adjust and switch the light source in a unified manner, making the operation smooth and intuitive.

Unique vertical epi-illumination

The ZEISS STEMI 305 observation head has a built-in vertical incident light source and is uniquely designed to effectively illuminate targets with deep holes and observe the reflection pattern of light sources on the surface of the object being measured.

Multifunctional oblique lighting

The bracket of the EDU series models is equipped with a lateral oblique light source that can be raised, lowered, adjusted in angle and focused. Manually adjust the height and angle of the light source directly along the track, and move the lamp head back and forth to focus the light source.

Transillumination with easy switching between bright and dark fields of view

The stage is equipped with a penetrating light source, and the light and dark field of view can be instantly changed through the lever on the right side. There is no need to move the observation object or disassemble the stage, and the operation is smooth.

A variety of lighting systems are available as optional extras

Compatible with various types of ring lights, snake neck lights, cold fiber optic conduit lighting... freely selectable according to usage needs.

ZEISS STEMI 305 EDU Parts Description

Observation sample sharing (biological observation)

Lacewing Wings - Penetrating Light and Dark Field Observations

Observation sample sharing (biological observation)

Eagle Feather - Observation Through Light Vision

Observation sample sharing (biological observation)

Ferns, sporangia, sporangia - oblique lighting

Observation sample sharing (biological observation)

Aphids - oblique lighting

Observation sample sharing (industrial application)

Metal Mechanism - Ring Lighting

Observation sample sharing (industrial application)

Printed Circuit Board - Ring Lighting

Observation sample sharing (industrial application)

Automotive parts - oblique lighting

Observation sample sharing (industrial application)

Labradorite Ring - Transparent Light and Dark Field Observation

ZEISS STEMI 305 EDU Microscope Dimensional Drawing

STEMI 305 series microscope configuration diagram

Product specifications

Microscope body
form	Greenough design, binocular stereo microscope
Visual tilt angle	The observation tube is tilted 45 degrees, and the distance between the eyes can be adjusted from 55-75mm.
Zoom ratio	Zoom ratio 5:1, without auxiliary lens and 10x eyepiece, the standard total magnification range is 8x to 40x (inclusive)
Objective lens magnification	0.8x, 1x, 2x, 3x, 4x (with freeze-frame positioning assistance)
working distance	110mm or more (without auxiliary mirror)
Eyepiece form	Binocular type, a pair of 10x eyepieces, super wide field of view 23mm, the diopter of both eyes can be adjusted independently on the eyepieces
Vertical down-light LED light	There is a built-in vertical down-emission LED light source at the objective lens end, and the power supply can be directly connected to the original base for dimming, so that fine reflective surfaces can be observed.
EDU focusing base
light source	LED upper and lower independent light sources, built-in upper and lower light source dimmers, are installed on the side of the square column below the focus lifter. The dimmer can be used as a power switch, and can also adjust the brightness of the upper, lower, or both upper and lower light sources.
Light source adjustment	The side reflection light source is equipped with a single projection as standard or an optional double coil tube. The lamp holder is fixed in front of the machine column and can slide up and down with a slide rail, and the light guide angle can be adjusted.
Light source standard	Standard single-tube side projection light source, adjustable focusing or astigmatism
LED color temperature	At least 5600K, lifespan is at least 25,000 hours, and brightness will not decay
Countertop size	D310mm x W200mm x H35mm
work surface	D195mm x W160mm
Filter or polarizer	The base can place a 45mm filter or polarizer (optional)
penetrating light	Switchable between bright field and dark field functions (standard configuration)
power supply	Integrated upper and lower light source power supplies, eliminating the need for external power supplies