Hi Cris what makes you believing that Liebig is better and more controlled?
Hi Sam, No I am still here and selling Nassenheiders.
Hi Jee, I do sell Nassenheiders the professional or the ones for the long hives.
Nassenheider vs Liebig
I just like to point out why Nassenheider is by far the better system.
Liebig Dispenser: Liebig dispenser is a 2nd development of the medicine bottle. The medicine bottle was used a long time ago by fixing it with a timber block with a hole in the middle the dropper continuously dropped down on a cloth no matter if formic evapourates or not, no control at all how much drops in what time frame.
What is the difference between Liebig and the medicine bottle? Almost nothing! The bottle is now plastic instead of glass and it drops on a small wick that's all but it still drops permanent same amount of formic as it is still only a dropper.
Liebig can be used only with higher temperatures (22ºC) the wick is too small to allow evaporation at cooler temperatures. If the temp is to cool the wick is quickly saturated and no formic is released out of the bottle.
If the temperature is too high pressure is building up in the bottle and the dropper releases more formic.
So where can you adjust something?
Nassenheider works down to 9ºC
The wick chamber which is connected to a pressure-free reservoir can hold 3 different wick sizes nuc, single or double brood box.
The big wick ( in the tray) makes sure that formic can evaporate down to 9º C
The tray is preventing that formic can drip on the bees.
That's why Nassenheider is better.
Liebig dispenser is shown sometimes good results equal to Nassenheider some people say as Liebig is working at the bee institute in Hohenheim, it would certainly be not a good look if some else finds a system which works better as the one which was developed at the bee institute.
Bruno Becker the inventor of the Nassenheider system found out that for example test to compare the systems were done on several institutes in a way which would give Liebig better results.
The pattern here was, the same size of beehives same amount of bees but what they didn't,t tell was that all the Liebig tests had been done in August (German summer) and the Tests with Nassenheider had been done in late October (German fall season) Which means they considered that Liebig would not work as good in October so the Liebig tests had been done at warmer temperatures.