Discovery Telecom TDK11 Manuale di istruzioni - Pagina 4

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How To Prepare

A Slide

Samples for examination should be

very thin so that light can pass

through them. If the sample is too

thick it will appear dark in the

microscope.

Cloth ﬁbres, pollen, dust or salt

crystals will be easy to see and make

good samples for beginners to

observe.

If the sample is very thin and clear a

drop of dye may make details show

more clearly. Methylene blue dye (not

included) can be obtained from an

aquarium supply store. You can

transfer a drop of dye from the bottle

to your slide with the pipette.

Collecting Specimens

Use your tweezers and the vials to

collect very small specimens from

your garden or home. Items that are

good to look at under a microscope

are pieces of bath sponge, leaves,

plant roots, ﬂower stems, sand, dirt,

fabric ﬁbres, salt and seeds.

Making A Temporary Slide

1. Wipe a blank slide clean, as dirt or

grease may affect the viewing of

your specimen.

2. Prepare a thin sample. You may

have to ask an adult to slice

something for you, as knives and

scissors can be sharp.

CAUTION!

DYES AND FOOD

COLOURING CAN STAIN.

ALWAYS FOLLOW THE SAFETY

INSTRUCTIONS ON DYE AND FOOD

COLOURING BOTTLES. WE

RECOMMEND THAT CHILDREN WEAR

OVERALLS AND/OR OLD CLOTHES AND

THAT YOU COVER FURNISHINGS,

CARPETS AND WORK SURFACES.

ALWAYS FOLLOW THE SAFETY

INSTRUCTIONS ON DYE BOTTLES.

WHEN USING DYES,

ADULT SUPERVISION IS

ESSENTIAL.

You can also try a little food

colouring to see if that works on

your specimen. Try mixing up our

own colours using different food

colours, an empty vial and the

stirring rod included in the set.

Remember they must be thin enough

and small enough so that the light can

shine through and all around them up

through the hole of the slide. Solid

objects are not good for viewing with

your microscope.

Cross-sections of stems,

roots and pieces of leaves are

really interesting under the

microscope. When any kind of

cutting is involved, adult

supervision is essential.

3. Pick up your sample with the

tweezers and put it on the centre

section of the slide. Add one drop

of water or, if needed, you can now

add a drop of dye/food colouring

using your pipette.

Making A Permanent Slide

1. Start with a clean slide and slide

cover. Make sure your hands are

clean and dry when handling the

slide covers.

2. Follow Steps 2 and 3 as before.

3. Before placing the slide cover over

your specimen add several drops

of transparent glue (not included).

Caution! Always follow the safety

instructions on glue bottles.

Important Information

– Only adults should replace batteries.

– Do not mix battery types or old and

new batteries.

– Do not use rechargeable batteries.

– Non-rechargeable batteries are not

to be recharged.

– Batteries are to be inserted with the

correct polarity.

– Do not short-circuit the supply

terminals.

– Remove exhausted batteries from

the toy.

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4. Gently place a slide cover

(see-through plastic label) over the

sample, being careful not to allow

in any air bubbles.

5. Remove any excess water or

dye/food colouring with a piece of

paper towel (not included) by

pressing it down gently over the

slide cover.

6. Observe your slide.

4. Place the slide cover gently over

the sample and gently squeeze

out any air bubbles.

5. Place your new slide in a safe

place and let it dry for a day before

you observe it under the

microscope.

We have also supplied labels for

your slides so you can name

specimens for future reference.

– Safe Battery Usage

– When the toy is not in use, remove

batteries to prevent possible

leakage.

– Use only recommended or

equivalent battery types.

– Do not dispose of

batteries in ﬁre:

TAKE

batteries may

explode or

A CLOSER

leak.

LOOK AT THE

WORLD