- Jun 5, 2013
- Reaction score
- Woking GU22
- Hive Type
You can use a Leisure Battery like i do this works well but it is heavy and i run two sublination units at time.BeeCraft magazine did a review in October. It includes the dimension you are looking for:
Colonies treated for varroa in autumn can receive a follow-up treatment during a broodless period in mid-winter. The usual method is to use an oxalic acid product, either dissolved in sugar syrup and trickled between brood frames or by heating until it forms a vapour that wafts through the hive, a process called sublimation. Sublimation, uses less oxalic acid and has been found to be more effective at killing varroa.
A disadvantage of the sublimation method is that the oxalic acid has to be heated rapidly to a high temperature, requiring a power source such as a car battery or a generator. This problem has been cleverly solved with the new Varrox Eddy which uses a lightweight, rechargeable battery to power a compact, self-contained device.
The Varrox Eddy is very easy to use. The correct dose of oxalic acid product is placed in a removable metal crucible that sits in a rugged plastic wand. The wand is inserted into the entrance of a hive which is then further blocked with sponge or rags. Pressing one button on the battery pack switches the device on and another starts the process. A series of coloured lights indicates that sublimation has started and when it has finished, a sequence that takes about two minutes. This allows you to switch the device on and move a safe distance from the hive before any sublimate is produced and to stay clear until the treatment is finished. The appropriate personal protection equipment, as advised in the instruction booklet, must be worn.
I have used the device on several colonies in full-size hives and nuc boxes and found it to be easy, safe and remarkably efficient. I was very impressed by the build quality and it is a great improvement on the various vapourisers that I have used in the past.
Other than efficiency of use, one of the best features is the neatness of the equipment. I have in the past struggled to carry heavy batteries and unwieldy cables to out-of-the-way apiaries, but the Varrox Eddy comes in a compact, sturdy carrying case that contains everything you need. The whole package weights less than 2kg. The kit consists of the wand, two metal crucibles, a measuring spoon, charging cable and one rechargeable li-ion battery which, when fully charged, is sufficient to treat 15 colonies. Additional spare batteries are available.
The wand will fit into any standard hive entrance that is at least 15mm high and 80mm wide. This makes it tricky to use on nuc boxes with disc entrances, although I found the wand could be placed under the mesh floor of a nuc box using an easily made plywood shield to seal the floor around the vapourising crucible. Some of my nuc boxes are polystyrene, but since only the small dosing pan gets hot there is no danger of damaging the polystyrene.
The equipment is more costly than other devices aimed at hobbyists but it is considerably cheaper than some of those aimed at the commercial beekeeper. If you have quite a few hives in several apiaries, I would think