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  1. M

    Vaporising Oxyalic Acid Against Varroa

    Thanks for clearing this up jenkinsbrynmair, I'm OK. :thanks: This must be a hot topic... We are living in different climate so maybe different methods are required. Our 3 month brood break compared to your couple of weeks? Hivemaker. - to me speed is an issue when trickling : don't want to...
  2. M

    Vaporising Oxyalic Acid Against Varroa

    I come in peace... As I said earlier I'm not a chemist but surely have learned a lot today! I'm saying what I wrote - that at my beeyard it won't take longer than 15min to trickle 10 hives. I try to keep it simple so majority of my hives consist of bottom, hive body, sheet of plastic and...
  3. M

    Vaporising Oxyalic Acid Against Varroa

    Whilst waiting my flight to depart I had a quick look: MSDS (material safety data sheet) for oxalic acid dihydrate Boiling Point: 149 - 160C (300 - 320F) Sublimes. Melting Point: 101.5C (216F) To me it says that usable temperature for our mite control purpose would be between 101.5C and 149 -...
  4. M

    Vaporising Oxyalic Acid Against Varroa

    Hivemaker, I'm not a chemist but after a quick read I understood that in high temps oxalic sublimes and decomposes. Maybe got it wrong and should read further... Erica, I didn't check the YouTube clips, but I think those posters should read the instructions www biovet...
  5. M

    Vaporising Oxyalic Acid Against Varroa

    Oxalic acid has two water molecules attached to each oxalic acid molecule. When heated: Water of hydration leaves at 101.5° C then water boils off leaving anhydrous oxalic acid crystals At 157° C the oxalic acid starts to sublime (goes directly from solid to gas) At 189° C the oxalic acid which...
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