TN Lab Flat Bottom Boiling Flask 4-Piece Set 50-100-250-500ml

TN Lab Flat Bottom Boiling Flask 4-Piece Set 50-100-250-500ml About this item 50ml, 100ml, 250ml, 500ml Glass Boiling Flasks with Flat Bottom made from Borosilicate in the Florence flask shape. Heavy-Wall Borosilicate 3.3 Glass Designed with a narrow neck, making it easier to swirl liquids without spilling Manufactured to ISO: 9001 Standards, CE Certification