Our boiling flasks are made from low-expansion borosilicate glass. Feature uniform wall thickness for superior mechanical strength and shock resistance. Ideal for boiling, heating and mixing in the laboratory. Additional Info: Boiling Flasks, Flat Bottom, Borosilicate Glass, 5000ml Package Size(L x W x H): 14 X 10 X 10 (IN) Categories: Flasks, Glass HTS Code: 7017.90.5000 UNSPSC: 4.11218e+007 Country Of Origin: INDIA