Stemi 508 is compact, reliable and equipped with optics and mechanics designed for heavy workloads. With the large 36 mm object field you always. keep the overview of your sample. The 8:1 zoom then allows to bring details up to 50× magnification. You even have larger samples? Add interchangeable
optics and observe an area of up to 122 mm, making Stemi 508 a top performer in its class. Stemi 508 offers better ergonomics than any other Greenough-type stereo microscope: The low viewing angle of 35° lets you keep a relaxed posture even after hours of work. With Stemi 508 you observe and document your samples exactly as they are: rich in detail, sharp in focus and free from distortion or color fringes. Stemi 508 is your robust all-rounder for everyday lab work and industrial inspections: accurate, ergonomic – and always easy to use.

Technical Specifications

Ambient Conditions
Storage (in Packaging)
Permissible Ambient Temperature	+10 to +40 °C
Permissible Humidity	Max. 75 % to +35 °C (without condensation)
Transportation (in Packaging)
Permissible Ambient Temperature	-40 to +70 °C
Operation
Permissible Ambient Temperature	+10 to +40 °C
Permissible Humidity	Max. 75 %
Air Pressure	800 hPa to 1060 hPa
Degree of Pollution	2
Area of Use	Closed spaces
Max. Altitude	Max. 2000 m
Operational Data – Power Supply, Microscope, Controller K LED
Protection Class	II
Protection Type	IP 20
Electrical Safety	Acc. to DIN EN 61010-1 (IEC 61010-1) allowing for CSA and UL specification
Degree of Pollution	2
Overvoltage Category	2
Power Supply	100 to 240 V ±10 %
Converting the line voltage is not necessary!
Power Frequency	50 Hz − 60 Hz
Power Consumption: Stage Power Supply with Microscope	Max. 40 VA
Output Power Supply Microscope and Controller K LED	12 V DC, max. 2 A
Input Output Power Supply Microscope and Controller K LED	100 − 240 V, 50 − 60 Hz, max. 0.55 A

 

 

Compact Stand System K
Stand Base	W200×D310×H35 mm (K Lab: H90 mm)
Working Surface	W160×D195 mm
Column with Stemi Mount, Handle and Focus Drive, Friction Adjustable
Height	250 mm
Lifting range	145 mm
Interface to microscope	d = 76 mm
Load capacity of Stemi mount	5 Kg
Interfaces for Stages	d = 84 mm
Interface for TL Polarizer	d = 45 mm
Interface for LED Spot K and Double Spot K
Incl. Glass Plate or bw Plate D = 84×5 mm, Dust Cover
Stands K, Separate Versions
Stand K mechanical stand without electronics with 2× M8 interface for supporting arms of fiberoptic light guides
Stand K MAT with reflected light LED electronics and ESD features (antistatic surface resistance)
Stand K EDU with reflected/transmitted light LED electronics and built-in flat transillumination unit (brightfield/darkfield)
Stand K LAB with reflected/transmitted light LED electronics and built-in mirror transillumination unit (brightfield/darkfield/oblique)
Electronic features of stand K EDU/LAB/MAT:
Separate control knobs for reflected / transmitted light (on/off/dimming)
Integrated power unit, easily changeable 12V DC 24W/100…240V AC/50…60Hz
Optical Specifications K LED Illuminations (For Stands K EDU/MAT/LAB)
Color Temperature	Typ. 5600 K
Lifetime (Lumen Maintenance)	Typ. 25000 h (operation time until the light intensity degraded to 70% of initial value)
LED Spot K, Height Adjustable, Zoomable	Brightness max typ. 30000 lx (object field center, LED spot mounted to stand K)
LED Double Spot With Goosenecks, Self Carrying	Brightness max. typ 90000 lx (object field center, double spot mounted to stand K)
Segmentable Ringlight K	Brightness max. typ 55000 lx (mounted to Stemi 508 body, object focused)
Working distance	50 mm – 300 mm. (also suitable for front optics 2.0×, when shifted upwards)
Built-in transmitted Light LED Illuminations:
Flat transillumination unit (stand K EDU)	Brightness max typ. 20000 lx (brightfield)
Mirror transillumination unit (stand K LAB)	Variable contrasting by rotatable and slidable mirror, brightness max typ. 25000 lx

 

Fiberoptic Illuminations
Cold Light Source	CL 4500 LED CRI90
Light Engine	High power LED engine
Light Flux @ 9 mm Fiber Output Diameter	Max. 450 lm at the output of a fiberoptic ringlight (active fiber bundle diameter 9 mm)
Color Temperature	Typ. 5400 K
Color Rendering Index	>90
LED Lifetime (Lumen Maintenance)	Average duration
Light Guide Sensor	Auto on/off
2 Pos. Filter Slider	2 filters and free opening
Wide-range Supply	Max. 50 W
Flicker free light, silent axial fan, 2.5 mm phone socket for foot button S
Cold Light Source CL 1500 HAL
Light Engine	150 W halogen reflector lamp
Light Flux	Max. 600 lm at the output of a fiberoptic ringlight (active fiber bundle diameter 9 mm)
LCD Display	Brightness/color temperature/ power-on hours
Bulb Lifetime at 80% Dimming (450 lm)	Typ 150 h
Filter Slider	One filter d = 28 mm and free opening
Wide-range Supply For Flicker Free Light, Silent Axial Fan	Max. 180 W
Light Guides
One- and Two Branch Flexible Arm Spot Light Guides (Need Additional Supporting Arms)	Oblique light; crisp 3d impression by distinct shadows
One- And Two Branch Gooseneck Spot Light Guides	Oblique light; crisp 3d impression by distinct shadows
Annular Ring Illuminators D = 66 mm for Brightfield	Shadow free illumination
Annular Ring Illuminators D = 66 mm for Darkfield	Shadow free illumination
Line Light 50 mm	For homogeneous grazing light
Vertical Illuminator	For illumination of deepenings
Diffusor S	Shadow free all sided soft light, “cloudy day illuminator”; avoid glare
Diffuse Area Light	One sided “soft” illumination; avoid glare but create certain shadows
Illumination Accessories
Focusing Optics for Spot Light Guides	Increase brightness
Polarizing Equipment for Spots and Ringlights	Reduce reflections

Ambient Conditions
Storage (in Packaging)
Permissible Ambient Temperature	+10 to +40 °C
Permissible Humidity	Max. 75 % to +35 °C (without condensation)
Transportation (in Packaging)
Permissible Ambient Temperature	-40 to +70 °C
Operation
Permissible Ambient Temperature	+10 to +40 °C
Permissible Humidity	Max. 75 %
Air Pressure	800 hPa to 1060 hPa
Degree of Pollution	2
Area of Use	Closed spaces
Max. Altitude	Max. 2000 m
Operational Data – Power Supply Stand K, EDU/LAB/MAT and Controller K LED
Protection Class	II
Protection Type	IP 20
Electrical Safety	Acc. to DIN EN 61010-1 (IEC 61010-1) allowing for CSA and UL specification
Degree of Pollution	2
Overvoltage Category	2
Power Supply	100 to 240 V ±10 %
Converting the line voltage is not necessary!
Power Frequency	50 Hz − 60 Hz
Power Consumption: Stage Power Supply Microscope and Controller K LED	Max. 40 VA
Output Power Supply Microscope and Controller K LED	12 V DC, max. 2 A
Input Output Power Supply Microscope and Controller K LED	100 − 240 V, 50 − 60 Hz, max. 0.55 A