Most effective and convenient tool for Varroa mites manament. It is used in fumigation method of beehives and thus with evaporation of oxalic acid bees are tting necessary components. heating temperature of instrument can be show degrees and Fahrenheit. Anhydrous oxalic acid is white crystal state. It is easy to sublimate because it will lose water of crystallization in dry air or heating. initial sublimation temperature is 100 , it will sublimate rapidly at 125 ,it will sublimate massive at 157 and start to decompose. accurate temperature display allows beekeepers to add oxalic acid more accurately, so as to kill bee hive mites more effectively., Manufacturer: ZKLGS