... 2 Borosilicate glass 3 Explosion-proof 4 high recovery rate 5 necessary equipment to lab RE Laboratory Revolving EvaporationRE ... concentration, crystallization, drying, separation and dissolution of coal recovery. The principle is: in a vacuum condition, constant ... , no spark, long life2 High evaporation efficiency, high recovery rate,3 Borosilicate glass (GG17 materials), with excellent physical and ...