OAV Wand Treatment through Shim at Top of Hive
Results 1 to 14 of 14
  1. #1
    Join Date
    Mar 2017
    Location
    dallas, tx, usa
    Posts
    154

    Default OAV Wand Treatment through Shim at Top of Hive

    Anybody using a wand OAV to treat from the top. Will the vapors fall through the hive? I want to do this for two reasons. With a clear top I can see the action and when it is done and no chance of touch any was on the bottom of frames.

    You thoughts would be appreciated.

    Anthony

  2. Remove Advertisements
    BeeSource.com
    Advertisements
     

  3. #2
    Join Date
    Mar 2013
    Location
    killen,al
    Posts
    205

    Default

    My concern is getting the Oxalic acid to hot. Every video I’ve watched the acid turns to a liquid then boils. I don’t know if the boiling point is hot enough to turn into a unless form.

  4. #3
    Join Date
    Aug 2014
    Location
    England, UK
    Posts
    1,637

    Default Re: OAV Wand Treatment through Shim at Top of Hive

    Quote Originally Posted by dphillipm View Post
    My concern is getting the Oxalic acid to hot. Every video Iíve watched the acid turns to a liquid then boils. I donít know if the boiling point is hot enough to turn into a unless form.
    Oxalic Acid doesn't have a Boiling Point. What you're seeing is the water component - the dihydrate - boiling-off as steam at a little over 100 deg C. Once that water has been removed, the then 'anhydrous' (dry) Oxalic Acid will then sublimate (turn from a solid into a gas without going through a liquid phase) at around 160 deg C. Then, shortly after leaving the heat source, it will cool below it's sublimation temperature - but having been in an invisible vapourised form for a few milliseconds, it will return into it's solid state - but now as a visible cloud of white ultra-fine crystals.
    LJ
    A Heretics Guide to Beekeeping http://heretics-guide.atwebpages.com/

  5. #4
    Join Date
    May 2016
    Location
    Park County, Montana, USA
    Posts
    464

    Default Re: OAV Wand Treatment through Shim at Top of Hive

    Quote Originally Posted by little_john View Post
    Oxalic Acid doesn't have a Boiling Point. What you're seeing is the water component - the dihydrate - boiling-off as steam at a little over 100 deg C. Once that water has been removed, the then 'anhydrous' (dry) Oxalic Acid will then sublimate (turn from a solid into a gas without going through a liquid phase) at around 160 deg C. Then, shortly after leaving the heat source, it will cool below it's sublimation temperature - but having been in an invisible vapourised form for a few milliseconds, it will return into it's solid state - but now as a visible cloud of white ultra-fine crystals.
    LJ
    Kudos!
    5 Production colonies, 1 side by side 5 frame nuc for support- 7 working queens is all I want.

  6. #5
    Join Date
    Nov 2009
    Location
    Manning, SC
    Posts
    5,219

    Default Re: OAV Wand Treatment through Shim at Top of Hive

    to Lj’s response. Spot on.
    http://OxaVap.com Your source for the ProVap 110
    OA Vaporizer. The fastest vaporizer on the market!

  7. #6
    Join Date
    May 2016
    Location
    Park County, Montana, USA
    Posts
    464

    Default Re: OAV Wand Treatment through Shim at Top of Hive

    Quote Originally Posted by aiannar974 View Post
    Anybody using a wand OAV to treat from the top. Will the vapors fall through the hive? I want to do this for two reasons. With a clear top I can see the action and when it is done and no chance of touch any was on the bottom of frames.

    You thoughts would be appreciated.

    Anthony
    I tried it, and it works, but it gets complicated when you have supers on. I built a shim just for this purpose. I used it putting it on, then removing it and it became a lot of unnecessary work. Right now I'm using a 'back' entrance in the bottom board I slip the sublimator into, there are angry bees that follow it out but I don't have be in front of the hives to deal with them. Shoving a hot iron into a beehive is gonna piss off some hives so just accept it as a poor nurse has to accept the wail of a small child as a vaccination is administered.

    My bees are gonna buy themselves a new non invasive Provap this year so things will get easier for all of us.

    Lee
    5 Production colonies, 1 side by side 5 frame nuc for support- 7 working queens is all I want.

  8. #7
    Join Date
    Mar 2017
    Location
    dallas, tx, usa
    Posts
    154

    Default

    Thanks Lee - did you build a special tray that slips in above the screen in the bottom board to hold the wand vaporizer? Do you have any pics?

    Anthony

  9. #8
    Join Date
    Mar 2014
    Location
    Red Bud, IL, USA
    Posts
    1,808

    Default Re: OAV Wand Treatment through Shim at Top of Hive

    I OAV nucs from the top when they have robber screens on, it works fine but does leave a lot of crystals on the top bars. Most of the nucs are double deeps and I've never manually checked for disbursement in triple deeps.

    and no, any honey on the nucs are used strictly as "in-house" resources with none being pulled for harvest/sale.

    With a clear top I can see the action and when it is done and no chance of touch any was on the bottom of frames.
    I don't worry about any wax on the bottom of the frames; if you're worried about it, scrape it off but I've never heard of anyone incinerating a hive while treating. But an FYI, if a wand touches or comes in close contact with the frames it can leave a scorch mark be it on bottom or top of the frames.
    ďThe single biggest problem with communication is the illusion that it has taken place.Ē -George Bernard Shaw

  10. #9
    Join Date
    Jun 2014
    Location
    Fargo, North Dakota
    Posts
    248

    Default Re: OAV Wand Treatment through Shim at Top of Hive

    OAV from the top is quite easy. I use my ATV as the battery source. I have attached a picture. The round mark on the acrylic sheet is where the vapors hit and then bounce down into the hive, and will reach the bottom entrace hole (plugged for application). The honey supers are off for the OAV. I have two (2) AOV mini-boxes so as to create a system for application. 9ABA6547-FA2D-43A7-8DC4-4AC05A75BE0A.jpg

  11. #10
    Join Date
    Jun 2017
    Location
    Richmond, va
    Posts
    109

    Default Re: OAV Wand Treatment through Shim at Top of Hive

    Quote Originally Posted by JTGaraas View Post
    OAV from the top is quite easy. I use my ATV as the battery source. I have attached a picture. The round mark on the acrylic sheet is where the vapors hit and then bounce down into the hive, and will reach the bottom entrace hole (plugged for application). The honey supers are off for the OAV. I have two (2) AOV mini-boxes so as to create a system for application. 9ABA6547-FA2D-43A7-8DC4-4AC05A75BE0A.jpg
    that looks like a LOT of OA. How much are you using per Hivebox?

  12. #11
    Join Date
    May 2016
    Location
    Park County, Montana, USA
    Posts
    464

    Default Re: OAV Wand Treatment through Shim at Top of Hive

    Quote Originally Posted by aiannar974 View Post
    Thanks Lee - did you build a special tray that slips in above the screen in the bottom board to hold the wand vaporizer? Do you have any pics?

    Anthony
    Anthony, I use a solid bottom board, if you'd still like pics I could shoot a couple later today.
    Lee
    5 Production colonies, 1 side by side 5 frame nuc for support- 7 working queens is all I want.

  13. #12
    Join Date
    Jun 2014
    Location
    Fargo, North Dakota
    Posts
    248

    Default

    That hive is three (3) deeps and a medium with 1 gram per box. I do not try to compact, and I do not level each spoon so it might be a hair higher rather than lower.

  14. #13
    Join Date
    Apr 2018
    Location
    Northern Colorado, USA
    Posts
    612

    Default Re: OAV Wand Treatment through Shim at Top of Hive

    I have treated a hive from the top. I put an extra box on, then a fan (wrapped in a screen and connected to some AA batteries) on top of a few frames. I had the empty box above a shim that I put the vaporizer thru. It seemed to work, and the fan moved the OA vapor down into the hive and around. I could see what was going on with the clear lid I put on top, but this was way more work than it was worth.

  15. #14
    Join Date
    Jun 2014
    Location
    Fargo, North Dakota
    Posts
    248

    Default Re: OAV Wand Treatment through Shim at Top of Hive

    The fan was unnecessary; a clear top can show the gaseous fumes bouncing down (off the acrylic glass), subsequent swirling activity, and then downward through the frames. There is also gaseous fumes that will work their way to the lowest front entrance (if you want to experiment and leave it uncovered). Top vaporization is quite simple, and you can watch.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •