Discovery Centi 01 с книгой Руководство по эксплуатации онлайн [4/32] 899087

DISCOVERY CENTI MICROSCOPES

General use

The Discovery Centi microscope is safe for health, life and property of the consumer and the environment when

properly used, and meets the requirements of international standards. The microscope is designed for observing

transparent objects in the transmitted light using the bright eld method. May be used by kids over 5 years old.

Caution! Children should use the microscope under an adult’s supervision only.

Microscope parts

• Base. It supports the weight of the microscope and houses the illumination source, electronics and control

mechanisms.

• Eyepiece tube. Combines the eyepiece with the objectives system.

• Eyepiece and objective. Consist of lenses that allow magnifying the image. The total magnication is

calculated by multiplying the eyepiece magnication to the objective magnication.

• Revolving nosepiece. This triple nosepiece with 3 pre-installed objectives allows you to change objectives

smoothly and easily.

• Stage. Sturdy and reliable stage with two specimen holders can be used to move your slides while observing

them. The lower illumination light passes through the opening in the middle of the stage.

• Focusing knob. A coarse focusing system allows adjusting the sharpness of the specimen image.

• Lower illumination. LED illumination can be powered by 2 AA batteries. You can use a mirror for the daylight

observations also. The lower illumination is used to observe transparent objects. Using a supplemental light

source, such as a table lamp, directed at the specimen will enable you to observe less transparent objects.

Using the microscope

Getting started

• Unpack the microscope and make sure all parts are available.

• Make sure the batteries are correctly installed in the battery compartment; insert new batteries if required.

• Put the microscope on a level surface and switch on the light. You can use the microscope without the light,

using a mirror. Put it next to the source of the bright light (a window or a desk lamp). Turn the mirror to the

source of light — a bright spot of light shall be seen in the eyepiece.

Focusing

• Place a specimen on the stage and x it with the holders.

• Start your observations with the lowest magnication objective and select a specimen segment for detailed

research. Then move the specimen to center the selected segment in the eld of view, to make sure it keeps

centered when the objective is changed to a more powerful one. Once the segment is selected, you should

center its image in the microscope’s eld of view as precisely as possible. Otherwise, the desired segment

might fail to center in the eld of view of the higher power objective. Now you can switch to a more powerful

objective by rotating the revolving nosepiece. Adjust the image focus if required.

• Move the specimen to place its thickest part exactly under the objective.

• Adjust sharpness, rotating the focusing knob, until you see a sharp image. Caution! The objective should not

touch the specimen, otherwise the objective or/and the specimen might be damaged.

The kit includes

• Discovery Centi 01: microscope, eyepiece, pipette, prepared slides (2pcs), blank slides (2pcs), cover slips

(5pcs), slide stickers (5pcs), glue, sea salt.

• Discovery Centi 02: microscope, eyepiece, pipette, prepared slides (3pcs), blank slides (3pcs), cover slips

(6pcs), slide stickers (6pcs), glue, sea salt, ask with brine shrimp, brine shrimp hatchery, spatula, scalpel,

pestle.