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Magnification: 40–800х. Abbe condenser, an iris diaphragm and light filters

The microscope head is a core element of the microscope that you look through to see a magnified sample
40 — 800
How much the size of a sample increases when you observe it through a microscope
Application and use of the microscope

Product ID 71917
Brand Levenhuk, Inc., USA
Warranty lifetime
EAN 5905555004280
Package size (LxWxH) 9.8x7.9x14.2 in
Shipping Weight 6.6 lb

Levenhuk 7S NG Microscope is designed especially for school children and kids interested in science. A reliable and easy-to-operate optical tool allows for exploring the micro world at 800x magnification. This magnification is sufficient for performing entertaining biological experiments, observing one-celled organisms, and detailed studying of the prepared microscope slides.

The microscope contains a classical illumination system that consists of an Abbe condenser, an iris diaphragm and light filters. The illuminator is a mirror placed under the stage. This design does not require AC supply, and that makes the optical tool safer, especially for children.

The optical scheme of Levenhuk 7S NG consists of a triple-cavity revolving nosepiece, installed objective lenses with different magnification and two eyepieces. The last ones are installed in the eyepiece tube and allow for adjusting the magnification and field of view of the microscope. The microscope slides are placed on the stage. It is equipped with a mechanical scale that allows for moving the microscope slides along two axes – X-axis (left-right) and Y-axis (forwards-backwards). The fine and coarse focusing knobs are used for sharpness adjustment.

The microscope body is made of metal. It is sturdy, reliable and durable.


  • Microscope for studies and hobby
  • Sturdy metal body
  • Simple and durable design
  • All-glass optics
  • Revolving nosepiece for three objective lenses
  • Abbe condenser with an iris diaphragm
  • Three light filters (blue, green, yellow)
  • Mechanical stage
  • Mirror illumination that does not require AC supply

The kit includes:

  • Microscope
  • Objective lenses: 4x, 10x, 40x
  • Eyepieces: 10x, 20x
  • User manual and lifetime warranty

Levenhuk 7S NG Microscope is compatible with Levenhuk digital cameras (purchased separately). Levenhuk cameras are installed in the eyepiece tube instead of an eyepiece.

Product ID 71917
Brand Levenhuk, Inc., USA
Warranty lifetime
EAN 5905555004280
Package size (LxWxH) 9.8x7.9x14.2 in
Shipping Weight 6.6 lb
Type biological, light/optical
Head monocular
Optics material optical glass
Nozzle fixed (non-rotatable)
Head inclination angle not angled
Magnification, x 40 — 800
Eyepiece tube diameter, in 0.9
Eyepieces 10x, 20x
Objectives 4x, 10x, 40xs (spring)
Revolving nosepiece for 3 objectives
Stage, mm 120x120
Stage moving range, mm fixed
Stage features with a mechanical stage
Condenser Abbe N.A. 0.65
Diaphragm iris
Focus coarse (50mm) and fine (1.8–2.2mm)
Body metal
Illumination mirror
Light filters blue, green, yellow
User level beginners
Assembly and installation difficulty level easy
Application school/educational
Illumination location lower
Research method bright field
Questions and Answers
Jaspen Carr (2018.02.14)
Hi. What organisms can be seen in a tap water drop? It depends from magnification, so could you specify specific magnifications (100, 400, 800) and specific objects seen under them.
Customer service:
In a tap water drop you will be able: at 100x - detect infusoria as small dots of different shape; at 400x and 800x observations - see more small details of it; at 1200x and with use of dyes - observe bacteria.
Mr Knight (2018.02.12)
enough power for observations of bacteria?
Customer service:
Most of bacteria are too small - you’ll need magnification of 1200x and higher, as well as dyes to color observed samples. Therefore, for such purposes, a serious professional tool is required together with special sample preparation techniques. Consider Levenhuk 320 PLUS Biological Monocular Microscope ( ).
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