Stemi 305 Compact Stereo Microscope
Rated 3.5/5 based on 11 customer reviews

Stemi 305 Compact Stereo Microscope

Stemi 305 is a compact and easy-to-use stereo microscope with 5:1 zoom (from 8x to 40x) and integrated LED illumination (brightfield and darkfield). It is ideal for daily observations of a microfluidic chip.
Observe your samples in real 3D, and document your research easily.
Average lead time: 4 weeks
Stemi 305 is a compact and easy-to-use stereo microscope with 5:1 zoom (from 8x to 40x) and integrated LED illumination (brightfield and darkfield). It is ideal for daily observations of a microfluidic chip.
Observe your samples in real 3D, and document your research easily.

Your Stereo Microscope with Integrated Illumination & Documentation

Stemi 305 is your compact Greenough stereomicroscope with 5:1 zoom. Equally suited to the biology classroom, research lab or on the industrial shop floor. Observe your samples as they are: in real 3D, distortion free and crisp in contrast, with no preparation required. Then share your images, whenever you want.

Profit from an easy-to-use microscope, where everything is integrated: long-life LED illumination, reflected and transmitted light and documentation.



  • Everything integrated into Stemi 305 stand – no additional cables or boxes.
  • Easily select and mix the integrated LED illuminations (vertical and oblique reflected light, so as transmitted light)
  • Large working distance and object fields – examine whole living samples.
  • Shadow-free, homogeneous illumination provided by the vertical LED spot of Stemi 305 as well as the flexible alignment of the microscope with tilting arm stand U. 


Created for Your Applications

  • Observe and identify biological samples in the classroom, and in the lab.
  • Investigate the morphology of plant organs in your practical botanical work.
  • Study worms, snails, spiders, frogs, crabs, eggs, and larvae for Zoology.
  • Examine the fruiting bodies of large fungi to differentiate between edible mushrooms and inedible look-alikes.
  • Perform detailed investigations or surgical procedures in your veterinary work with the shadow-free, integrated vertical illumination and flexible alignment of the tilting arm stand.
  • Inspect or repair printed circuit boards in electrostatic protected areas. Profit from stand versions with ESD features.
  • Easily detect scratches on metal surfaces using the segmentable ringlight


Stemi 305 brochure

PDF Brochure

Stemi 305 edu dimensions


Technical Data

All Stemi 305 zoom bodies are equipped with an integrated vertical illumination to observe holes or cavities


Operation concept Stereo microscope, Greenough design with 5:1 zoom range
Zoom bodies

Stemi 305 binocular (all zoom bodies incl eyepieces 10×/23 Br. foc)


Magnification range

8.0× to 40× with basic version (10× eyepieces),

Using interchangeable optics, all magnifications from 4× to 200× are accessible

Max. resolution 200 Lp/mm basic version; up to 400 Lp/mm with interchangeable optics
Working distance 110 mm basic version; up to 185 mm using interchangeable optics
Maximum object field 29 mm basic version; up to 58 mm using interchangeable optics
Interface to Stemi mount 76 mm (international)
Interchangeable eyepieces PL10x/23 Br. foc (included), PL16×/14 Br. foc, W25×/10 foc
Stemi carriers for column 32 mm Stemi mount with drive, stemi mount tiltable 0–90°
Bench top stands (*= dimensions as Model K)

Model K Edu, 200×310 mm, column 250 mm with drive, travel 145 mm

Reflected light electronics, flat TL base (bright field/dark field)

Boom stands Model A; ball bearing double-arm model SDA; tilting arm model U
Stages Sliding stage circular, ball-and-socket stage, rotating polarization stage
LED illuminators K Spot K LED, double spot K (selfcarrying), segmentable ringlight K.
Direct LED illuminators VisiLED ringlights, segmentable; double arm LED spot for column 32
Cold light sources CL4500 LED (CRI 90) with various light guides for highest brightness or special contrasts, eg goosenecks, ringlights, line or area light, diffusor
Transmitted light illuminators Transmitted light mirror accessory for stand N (BF, DF, oblique)
Polarization Polarization filters for ringlights, spots and transmitted light units


Stemi 305 BodyMicroscope Body Stemi 305

  • Greenough system
  • Manually operable zoom 5:1 (0.8x...4.0x) on both sides
  • Fixed zoom clickstops 0.8x-1x-2x-3x-4x
  • Free working distance 110 mm
  • Viewing angle 45° with adjustable interocular distance 55...75 mm
  • Eyepiece mount 30 mm with maximum field number 23 mm
  • Mount D=76 mm for Stemi mount/Mount S
  • Interface D=66 mm for illuminators
  • Thread M52 for front optics or analyzer
  • Integrated near-vertical LED illumination (IVI) for stands K EDU/LAB/MAT, stand M LED, controller K LED
  • Additionally included: Eyepieces 10x/23 Br. foc. - Spiral cable RJ12


Eyepiece eyecup Stemi 305Eyepiece eyecup (x2)






Stemi 305 Stand K EduStand K EDU

  • Stand base D310xW200xH35 mm
  • Working surface D195xW160 mm
  • Interface d=84 mm for stages
  • Column 250 mm with drive and handle, lifting range 145 mm
  • Stemi mount d=76 mm, load capacity 5 Kg, adjustable friction
  • 2x sockets for IVI and illuminator K LED
  • RL control for on/off/dimming - ESD protection feature: Antistatic surface, grounding socket
  • Integrated power unit 12V DC 24W/100...240V AC/50...60Hz

Additionally included:

  • Glass and B/W plastic plate D=84x5 mm
  • Country-specific power cable EURO C8
  • Dust cover



Payment Terms

You can either order and pay via credit card or invoice (through a purchase order). Request a quote easily by clicking on the "Request a Quote" button in the cart page.

Please note that some products are not available for direct purchase: just click "Request a Quote" on the product page and fill in the form to get more informations!

Credit card 

  • Add your products to the cart
  • In the cart page, click on Proceed to Checkout
  • Complete your credit card informations (don't worry, we are using Stripe, a PCI-certified program specialized in online transactions)
  • That's it! You will receive an order confirmation within a few minutes, and our team will send you the invoice.


  • Add your products to the cart
  • In the website header, click on Request a Quote
  • Fill in the required informations, then click on Submit Quote
  • Our team will send you a quote shortly
  • After receiving the quote, just send your purchase order at
  • Our team will complete your purchase and send you the invoice!


If you wish to pay in USD, GBP or AUD, please specify it in your PO. We can add the converted value in the required currency to the quote if requested.


Worldwide shipping

We ship worldwide from our warehouse in France.

Shipping charges are calculated based on the shipping country, and can be estimated from the cart page. Our shipping rates and times are:

  • France: GLS (1-2 business days), free shipping above 350€
  • Germany, Austria, Belgium, Denmark, Spain, Hungary, Italy, Luxembourg, Netherlands, Poland, Portugal, Czechia, Slovakia:
    • GLS (2-4 business days), free shipping above 350€
    • DHL Express (1-2 business days), reduced rate above 350€
  • Bulgaria, Croatia, Estonia, Finland, Ireland, Latvia, Lithuania, Romania, Slovenia, Sweden, Greece, Cyprus, Malta: DHL Express (1-2 business days), free shipping above 400€
  • United Kingdom: DHL Express (1-2 business days), free shipping above 400€
  • USA, Canada: DHL Express (1-3 business days), free shipping above 400€
  • Switzerland: DHL Express (1-2 days), free shipping above 450€
  • Other countries: DHL Express, shipping rates based on the destination, weight and dimensions


If you wish to use your own shipping account, we will charge a flat fee of 15€.

We reserve the right to apply a surcharge for parcels > 30 kg, palletized shipments, or packages with dimensions exceeding the maximum dimensions of our carriers.

Please note that our standard shipping incoterms are DAP (Delivered At Place), or EXW if using your own carrier.

Contact us if you have any questions!