{"id":5333,"date":"2016-05-18T13:13:57","date_gmt":"2016-05-18T13:13:57","guid":{"rendered":"http:\/\/vonbulow.org\/medlemmer\/?page_id=5333"},"modified":"2024-03-26T06:33:11","modified_gmt":"2024-03-26T06:33:11","slug":"new-formic-acid-vaporizers","status":"publish","type":"page","link":"https:\/\/www.biavl.dk\/medlemmer\/videnbank\/beekeeping-in-denmark-2\/varroa-in-english\/new-formic-acid-vaporizers\/","title":{"rendered":"NEW FORMIC ACID VAPORIZERS"},"content":{"rendered":"

NEW FORMIC ACID VAPORIZERS<\/strong>
\nMANY NEW VAPORIZERS HAVE BEEN DEVELOPED, AND WORK WELL.<\/strong><\/p>\n

\"FORMIC10\"<\/p>\n

In recent years a great development in the production of formic acid vaporizers has taken place.\u00a0 We have tested several and found them good or acceptable.<\/p>\n

THE NASSENHEIDER VAPORIZER\u00a0<\/strong>
\nThe Nassenheider vaporizer has been on the marked in Denmark for a number of years and is in common use here with good results.\u00a0 The vaporizer comprises two compartments.\u00a0 One for storage and the other for evaporation.\u00a0 In the evaporation compartment one can put a piece of cardboard of two different sizes. The vaporizer can be placed on a lath on an empty frame, so that the apparatus is set half way up the frame. This is so in order for the vaporizer to come into contact with the warmth of the colony.
\n60 OR 85% SOLUTION
\nIn the vaporisers manual it recommends that\u00a0 a 60%\u00a0 formic acid solution be used. Many of those using the apparatus in Denmark use an 85% solution together with the smaller wick supplied – with good results.<\/p>\n

PLACEMENT\u00a0<\/strong>
\nIt is important that the vaporizer is placed so close to the brood that is is inside the area covered by bees. If necessary the vaporizer can be set up against the most outward brood frame.\u00a0 Should the vaporizer\u00a0 be placed outside the cluster of bees. then there will be an insufficient\u00a0 evaporation. Should\u00a0 the brood\u00a0 have spread to two brood boxes, a second vaporizer should be placed on the upper box, and placed on the opposite side to that underneath.<\/p>\n

STARTING TREATMENT\u00a0<\/strong>
\nThe treatment should start as soon as the last honey has been harvested, and winter feeding begun.\u00a0 The treatment lasts for 7 to 10 days.\u00a0 After the treatment is complete winter feeding can resume.<\/p>\n

THE SIZE OF THE WICK
\n<\/strong> With an early feeding , i.e. in the beginning of August, the smaller piece of cardboard should be inserted.\u00a0 For later treatment, e.g. at the end of September, when the bees have taken all their winter feed,\u00a0 the larger piece of cardboard should be used. Using 85% formic acid solution the smaller piece should be used. This treatment lasts from 14 to 21 days.\u00a0 Check to see that the vaporizer\u00a0 still contains liquid –\u00a0 it may be necessary to refill it.<\/p>\n

FILLING\u00a0<\/strong>
\nIt is recommended that one acquires a squirt bottle to fill the vaporizer with, since it is difficult to do so otherwise without spilling.\u00a0 Check to see that about 10 ml has evaporated every day in the initial treatment.<\/p>\n

THE NASSENHEIDER IN A BOX\u00a0<\/strong>
\nA further development of the Nassenheider was brought onto the marker last year, making it possible to treat bees in a whole brood box.\u00a0 What\u2019s new here is that one can now put the vaporizer on feet, so that it can be placed on top of the frames.\u00a0 Under the vaporizer an evaporation cloth\u00a0 is laid, which is supplied through a wick from the reservoir.\u00a0 Dependent on the temperature inside the hive, a large or small evaporation area from the cloth is effected.\u00a0 We have scant experience of this type of vaporizer from Denmark.<\/p>\n

\"FORMIC11\" \"FORMIC12\" \"FORMIC13\"<\/p>\n

THE APIDEA VAPORIZER\u00a0<\/strong>
\nA completely new form for vaporizer on the Danish marked is the apidea vaporizer.\u00a0 The principal is similar to that of the Kr\u00e5mer board . The vaporizer consists of a tray in which a \u201cdishcloth\u201d is placed , which is able to absorb the formic acid.\u00a0 The tray is encloses by two surfaces, in a hollow system.\u00a0 The opening is created, and regulated,\u00a0 by moving the surfaces away from one another. Evaporation\u00a0 is only created from one side.\u00a0 The vaporizer is best filled using a squirt bottle out in the apiary.\u00a0\u00a0\u00a0 The vaporizer should be raised, just like the Kr\u00e5mer boards, about 2 cm. over the frames.\u00a0 According to the German manual., it is operated with 60, 70 and 85% formic acid solutions.\u00a0 Testing with 85% soln. in Denmark has shown good results, but testing with a 60% soln. has shown less promising results than the Kr\u00e5mer board method.<\/p>\n

THE LIEBERFELDER DISPENSER\u00a0<\/strong>
\nThe Swiss Bee Research Institute in Lieberfeld, together with The Swiss Beekeeper\u2019s Association have developed a vaporizer similar in principal to the\u00a0 Apidea.\u00a0 The size of the openings are regulated using a rotating disc.\u00a0 The dispenser is supplied with legs which raise it 1.5 cm. above the frames.\u00a0 The dispenser has been tested in Denmark, but is not available for sale here.<\/p>\n

THE UNIVERSAL VAPORIZER\u00a0<\/strong>
\nAgain a dispenser which operates in a similar way to the Kr\u00e5mer board method.\u00a0 Here a circular plastic container, 3 cm. in height and 16 cm in diameter, is used , containing\u00a0 \u201coasis\u201d (the absorbent material used in floral decorations) . Above this are two circular discs with a range of openings, which\u00a0 can be regulated according to need.\u00a0 The clever part of this apparatus is that it is supplied with a close fitting lid, which allows the dispenser to be filled at home.\u00a0 The apparatus is tested in Denmark but is not available for sale here.<\/p>\n

OTHER VAPORIZERS\u00a0<\/strong>
\nThere are at the moment two other types of vaporizers\u00a0 that are being researched in Europe.\u00a0 In Southern Germany a so-called plate vaporizer is in use. It works from a drip bottle being suspended on a timber frame and dripping formic acid onto a plate.\u00a0 The method has shown promising results.
\nIn Sweden trials using a so-called \u201cburk\u201d vaporizer, in which a honey jar filled with saw-dust containing formic acid is used.\u00a0 On the top of the jar is a piece of foam.\u00a0 The whole jar is then inverted onto the frames. The method is being tried out in Sweden at he moment. Up until now it has given varied results along with a much too explosive vaporization in the initial treatment.<\/p>\n

\"FORMIC14\" \"FORMIC15\" \"FORMIC16\"<\/p>\n","protected":false},"excerpt":{"rendered":"

NEW FORMIC ACID VAPORIZERS MANY NEW VAPORIZERS HAVE BEEN DEVELOPED, AND WORK WELL. In recent years a great development in the production of formic acid vaporizers has taken place.\u00a0 We have tested several and found them good or acceptable. THE NASSENHEIDER VAPORIZER\u00a0 The Nassenheider vaporizer has been on the marked in Denmark for a number […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":5305,"menu_order":7,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-5333","page","type-page","status-publish","hentry"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.biavl.dk\/medlemmer\/wp-json\/wp\/v2\/pages\/5333","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.biavl.dk\/medlemmer\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.biavl.dk\/medlemmer\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.biavl.dk\/medlemmer\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.biavl.dk\/medlemmer\/wp-json\/wp\/v2\/comments?post=5333"}],"version-history":[{"count":1,"href":"https:\/\/www.biavl.dk\/medlemmer\/wp-json\/wp\/v2\/pages\/5333\/revisions"}],"predecessor-version":[{"id":8962,"href":"https:\/\/www.biavl.dk\/medlemmer\/wp-json\/wp\/v2\/pages\/5333\/revisions\/8962"}],"up":[{"embeddable":true,"href":"https:\/\/www.biavl.dk\/medlemmer\/wp-json\/wp\/v2\/pages\/5305"}],"wp:attachment":[{"href":"https:\/\/www.biavl.dk\/medlemmer\/wp-json\/wp\/v2\/media?parent=5333"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}