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Congratulations on your Celestron Labs 
microscope purchase. Your new Celestron 
Labs microscope is a precision optical 
instrument, made of the highest quality 
materials to ensure durability and long 
life. It is designed to give you a lifetime of 
enjoyment with minimal maintenance. 
This CL-CM800 microscope provides powers 
from 40x up to 800x. It is ideally suited for 
examining specimen slides of yeasts and 
molds, cultures, plant and animal parts, 
fibers, bacteria, and more.

Before attempting to use your Celestron 
Labs microscope, please read these 
instructions to familiarize yourself with 
the parts and functions of the microscope. 
Refer to the microscope diagrams to locate 
the parts discussed in the manual. The final 
section of the manual provides simple care 
and maintenance tips.

IN THE BOX              

- Microscope CL-CM800
- 2 wide field eyepieces: 10x, 20x
- AC adapter
- 10 prepared slides
- 3 AA batteries

PARTS

1.

 Eyepiece

2.

 Eyepiece Tube

3.

 Nosepiece

4.

 Objective Lens

5.

 Stage Clip

6.

 Stage

7.

 Illuminator

8. 

Base 

9.

 Head

10. 

Arm

11. 

Focus Knob

12.

 Disc Diaphragm

13.

 Power Switch 

14.

 Illuminator Adjustment

SPECIFICATIONS

STAGE

:  Plain Stage with clips –  

3.5 in x 3.5 in (88 mm x 88 mm)

HEAD: 

Monocular with 45° incline

MAGNIFICATION  RANGE: 

40x to 800x

FOCUSER: 

Coarse focus

OBJECTIVES:

 4x, 10x, 40x

EYEPIECES

: WF 10x, WF 20x

NOSEPIECE

: Triple with click stop

ILLUMINATOR

: LED, adjustable

CONDENSER

: N.A. 0.65

DIAPHRAGM

:  Disc diaphragm with 6 

aperture sizes

DIMENS   IONS

: 5.0 in x 6.0 in x 11.0 in 

(127 mm x 152 mm x 279 mm)

WEIGHT

: 2.7 lbs (1.108 kg)

MAGNIFICATION TABLE

Use the following table to determine 
magnification using your microscope’s 
different eyepiece/objective lens 
combinations.

OBJECTIVE LENS:   

  4x     10x      40x

WF 10X EYEPIECE:

    40x   100x     400x

WF 20X EYEPIECE:

    80x   200x     800x

SETTING UP YOUR 
MICROSCOPE

1.

  Remove the Styrofoam container from 

the carton.

2.

  Carefully remove the microscope and 

accessories from container and set them 
on a table, desk, or other flat surface.

3.

 Remove bag covering from microscope.

4.

  Remove cap from eyepiece tube (2).

5. 

Remove the eyepieces from plastic bags.

6.

  Insert the WF 10x eyepiece into the 

eyepiece tube (2)

7.

  Plug the AC adapter into the socket on 

the back of the base (8). 

8.

  Insert the plug end of the AC adapter into 

the proper power source.

Additionally the microscope can be powered 
with three AA batteries.
-  Open the battery compartment on the 

base (8) of the microscope. 
-  Install the three AA batteries (supplied) 

and close the battery compartment.

MICROSCOPE OPERATION

Before viewing specimens, please read 
these sections thoroughly regarding 
focusing, changing power (magnification), 
using the stage and adjusting illumination.

VIEWING A SPECIMEN 

Carefully place a specimen slide under the 
stage clips (5) and center the specimen. 
Images will be observed upside down and 
reversed right to left. Prepared slides are 
included with your microscope to help you 
get started. 

You are now ready to focus and view a 
specimen. Be careful not to damage the 
specimen slide.. When using higher powers 
while focusing, make sure the objective lens 
(4) does not hit the slide or object being 
viewed.

FOCUSING AND CHANGING 
POWER (MAGNIFICATION)

1. 

 Always start with lowest power (4x 
objective lens and WF 10x eyepiece). This 
combination yields the lowest power.

2. 

 Place a specimen slide (or object) on 
the stage (6) directly under the objective 
lens (4). Gradually turn the focus knob 
(11) until the specimen is in focus.

CM800

Model # 44128

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