Optional Accessories; Care And Maintenance; Technical Data; Eec Conformity Explanation - Bresser BioDiscover DuoLux Mode D'emploi

and can survive the swamp or lake drying out causing the death of the
entire shrimp population for up to a decade in a form of hibernation.
The eggs hatch once the right ambient conditions again obtain. The
eggs supplied (Fig. B 26) are of this type.
8.4.2 Hatching of the salt water shrimp
To hatch the shrimp it is essential to first have a saline solution
suited to the shrimp's needs. Fill half a litre of rain- or freshwa-
ter in a container. Let it stand for about thirty hours. As water
evaporates over time it´s a good idea to have a second container
of such water left standing for thirty-six hours. Once it´s stood for
this length of time pour half of the sea salt supplied into one of the
containers and stir until it has dissolved. Then pour some of it into the
shrimp sbreeding plant (Fig. B 22). Add a few eggs and close the lid.
Put it somewhere with plenty of light but not in the direct sun. The
tempera ture should be approximately 25° C. The shrimps will hatch
in two or three days at this temperature. Should any water evaporate
during this time replace it from the second container.
8.4.3 The saltwater shrimps under the microscope
What comes out of the egg is known as a nauplius larva. Use the pipette
(Fig. B 20) to put some of them on a slide for examination. They will
move in the solution using their hair like limbs. Remove a few daily
from the container for examination under the microscope. If you do so
and save the pictures made with the MicrOcular you will then have a
seamless record of the shrimp´s lifecycle. You can remove the upper
lid of the shrimp´s breeding plant and put the whole thing under the
microscope. The larvae will mature in six to ten weeks depending on
ambient temperature. You will soon have bred an entire generation of
saltwater shrimps that constantly reproduce.
8.4.4 Feeding your saltwater shrimps
To keep them alive saltwater shrimps must be fed occasionally. This
must be done carefully as overfeeding causes the water to stagnate
and poison the shrimps. Feeding is best done with dry powdered
yeast (Fig. B 23). Give them a little every other day. If the water dar-
kens this signifies it is stagnating. If so remove the shrimps and put
them in a fresh saline solution.
Eggs and shrimps are unfit for human consumption!

9. Optional accessories

A cross table is available for the Bresser BioDiscover as an optional
accessory (Fig. B 29). Remove the specimen holder clamps to install
it (Fig. A 14).
Use the screw (Fig. B 30) to fasten the cross table to the microscope
table. Use the adjusting screws (Fig. B 31+32) to precisely position
the specimen longitudinally (Fig. B 31) and crosswise (Fig. B 32).

10. Care and maintenance

Your microscope is a top-quality optical device. Therefore please
prevent dust or damp affecting it. Avoid fingerprints on all optical
surfaces. Remove any dirt or dust with a fine soft brush first. Then
clean the place/s affected with a soft lint-free cloth. Fingerprints on
optical surfaces are best removed with a lint-free cloth dampened
with a little alcohol.
Note

11. Technical data

Magnification table
Eyepiece Objective
5x 4x
5x 10x
5x 40x
16x 4x
16x 10x
16x 40x

12. EEC conformity explanation

Bresser GmbH, resident in 46414 Rhede/Westf., Gutenbergstr. 2,
Germany, explains the agreement with in the following specified EEC
guidelines for this product:
EN 61558-2-6:1997
EN 61558-1: 1997 +A1
Product description: Biological-/ Stereo-type microscope
Model: BRESSER BioDiscover
Rhede, July 2007
Bresser GmbH
Helmut Ebbert
Managing director
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Magnification with Barlow lens
20x 40x
50x 100x
200x 400x
64x 128x
160x 320x
640x 1280x
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