BioVet VARROX Instrucciones De Uso página 8

1. Appliance
The VARROX -Vaporiser consists of a heater, a metallic-
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support and 3 m of lead with 2 battery-clips. It has an
output of 150 W. The power source can be an accumu-
lator (car battery, 12 volt, 12 ampere, capacity > 40 Ah).
2. Mode of action
Oxalic acid is added to the pan, then the appliance is
inserted through the entrance of the hive. As a result of
the heating action of the pan, the oxalic acid liquefies
and vaporises. Oxalic acid vapour fills the hive and all the
bees and surfaces are then covered with a very thin layer
of oxalic acid crystals. These fine crystals are tolerated
well by the bees, but have a deadly effect on varroa mites.
3. Treatment
3.1 Time
The use of the VARROX -Vaporiser is particularly suita-
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ble for the follow up treatment in broodless colonies (see
5. Concept of control).
The treatment should not be made during heavy bee flight.
The temperature should not be below + 4 °C. Especial-
ly in honeydew areas the last cleansing flight should not
date back more than four weeks. A cleansing flight should
then be awaited.
3.2 Dosage
Type hof hive
One-chanber-hive
(warm way, one-storey)
Two-chamber-hive
(two-storey/Dadant)
*One spoon filled loose and without pressing, corresponds to
one gram Oxalic acid-dihydrate. Each VARROX
is supplied with a measuring spoon.
3.3 Placing the VARROX -Vaporiser
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The appropriate amount of oxalic acid-dihydrate is placed
into the VARROX -Vaporiser. Afterwards, the appliance
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is inserted through the entrance of the hive right below
the cluster of the bees until the metallic support is fully
inside. It must not be used at close range of wax or bees
(minimum distance 2 cm).
If the insertion through the entrance is not possible becau-
se of the construction of the hive, use the opening of the
diagnosis drawer where possible.
Attention: The VARROX -Vaporiser reaches temperatures
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of up to 400°C. It can create patches of heat on the hive
bottom and frames if used for too long or too close to
the hive. This can be avoided by using a sheet metal or
wooden board below the pan.
Caution with synthetic hives and plastified varroa
screens: With hives or varroa screens made of synthetic
material, an isolation platter (minimum 4 mm thick) must
be put under the appliance.
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Oxalic acid- Measuring
dihydrate spoon*
1 g 1
2 g 2
-Vaporiser
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Hint: Depending on the height of the entrance and the
bottom of the hive, we recommend that the VARROX
Vaporiser is fitted in evenly by bending down both sides
of the metallic support a few millimetres. The distance
between the bottom of the hive and the heating element
can be increased and the source of the heat is taken off
the bottom.
3.4 Sealing up the hive
Seal the whole entrance (or diagnosis drawer) around the
handle of the VARROX -Vaporiser using strips of foam or
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cloth. Open floors or other openings should be shut tightly
over the whole surface.
3.5 Duration of the treatment
After the hive is sealed up, the vaporiser should be con-
nected to a car battery (12 V) for 2
One of the battery-clips of the lead can be constantly con-
nected with the source of power using the contact of the
second clip to switch the appliance on and off. It makes
no difference which clip is connected to the plus-terminal
- the function of the heating is not reduced.
After disconnecting the VARROX
minutes before the appliance is pulled out, so that the
oxalic acid-vapour can settle down. Once removed, en-
sure that the entrance of the hive is shut tightly again and
left shut for another 10 minutes.
After taking out the VARROX
cooled in a bucket of water, so that with the next use, no
vaporisation begins before the appliance is inserted into
the hive.
4. Oxalic acid-dihydrate (Oxalic acid-crystals)
Oxalic acid is an unhealthy, toxic and corrosive substance.
When filling the VARROX -Vaporiser and during the treat-
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ment, it is absolutely necessary to wear protective glasses,
a protective mask FFP3, gloves and long-sleeved clothes.
4.1 Purchase of oxalic acid-dihydrate
For the treatment, oxalic acid-dihydrate (C2H2O4 x 2
H2O) CAS-No. 6153-56-6, EG-No. 205-634-3 has to
be used.
Normally available in pharmacies.
4.2 Purchase of oxalic acid-dihydrate/Handling of
oxalic acid
Oxalic acid can cause damage to health with both skin
contact and if swallowed. Avoid contact with eyes and
skin. Vapours and dusts of the oxalic acid should not be
inhaled. Keep oxalic acid out of the reach of children.
Oxalic acid must be stored in its original container (with
law-concurring labelling) in a safe place. In the case of
eye contact, immediately wash the acid out with water. If
ingested immediately go to a doctor.
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minutes.
1/2
-Vaporiser, wait for 2
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-Vaporiser, it should be
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