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SPECIFICATIONS 

 

Objectives:  

Achromatic objectives.    

 

 

Objective

 

Numerical 

Aperture (N.A.) 

Working 

Distance

 

4X 0.10 

37.5mm 

10X 0.25 

7.31mm 

40X 0.65 

0.63mm 

100X (oil) 

1.25 

0.19mm 

 

Total magnifying powers: 

 

Eyepiece &  

Objective 

Auxiliary Lens 

 

4X 10X 40X 

100X 

10X wide field 

40X 

100X 

400X 

1000X

 

Stage Size: 130x150mm 

 

X-direction movement range: 70 mm;  Y-direction movement range: 50 mm 
Abbe double lens condenser:  N.A. = 1.2 with a built in iris diaphragm. 
Fine focusing range:  30 mm. One division is 0.0015 mm.  Coarse focusing range:  30 
mm.  
Interpupillary distance between eyepiece tubes from 55 mm to 75 mm. 
Magnifying power of the auxiliary lens:  1X.    

 

STANDARD OUTFIT 

MRP-3000 

biological Microscope  

1 set 

Eyepieces:  10X (wide field) 

1 pair 

Achromatic Objectives:  4X, 10X, 40X, 100X (oil) 

1 piece each 

Replacement halogen bulb: (6V 20W) 

1 each 

Replacement fuse (0.5Amp 250V) 

1 each 

Three wire power cord 

1 each 

Blue glass filter 

1 piece each 

Covers for protecting Eyepiece Tubes 

2 pieces 

Cedar-Wood Oil 

1 bottle 

When dis-assembling the microscope for storage, always put the covers into the eyepiece 
tubes to prevent dust settling inside the microscope lenses. 

The 100X oil immersion objective should be wiped off with a piece of lens paper 
immediately after using. If necessary, use optical lens cleaner sparingly. 

 

 
Bulb replacement

:  (Unplug unit from power source) 

Loosen the screw knob on the underside of microscope and open the panel to expose the 
bulb.  Use a small screwdriver to loosen the screws holding (the two screws closest to the 
bulb) the prongs of the halogen bulb. Note that the prongs of the bulb are held in place by 
small brass plates which shift slightly when the screws are loosened. Remove the old 
bulb. 

Important: Do not touch the new halogen bulb with bare hands.  

Wear gloves or 

hold the bulb using tissue or lens paper.  Body oils may damage the halogen bulb.  Insert 
prongs of replacement bulb into 

top 

of socket (above the brass plate) and tighten screws 

slightly.  (The brass plates will move up to hold the prongs in place.) Close door and 
hand tighten the thumbscrew knob.   
 

Fuse replacement

: (Unplug unit from power source) 

Open the fuse holder by unscrewing knob in the direction of the arrow.  Remove the old 
fuse and insert replacement fuse.  Replace fuse holder and screw in place. 

 
 

 

 
 
 
 
 
 
 
 
 
 
 
 

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