- 3 %
The original for the evaporation of oxalic acid dihydrate. The VARROX® evaporator is particularly stable and durable. VARROXAL is filled into the pans of the VARROX® evaporator and brought through the pilot hole under the bee grape. The VARROX® evaporator is powered by a 12V car battery and the oxalic acid is evaporated.