Double-necked flask (5 ml. round bottom)
Material : Borosilicate glass
Capacity：5ml
Middle joint : 14
Side joints : 14
high temperature resistance
clear vision


Double-necked flask (10 ml. round bottom)
Material : Borosilicate glass
Capacity：10ml
Middle joint : 14
Side joints : 14
high temperature resistance
clear vision


Double-necked flask (25 ml. round bottom)
Material : Borosilicate glass
Capacity：25ml
Middle joint : 14
Side joints : 14
high temperature resistance
clear vision


Double-necked flask (25 ml. round bottom)
Material : Borosilicate glass
Capacity：25ml
Middle Joint : 19
Side joints : 19
high temperature resistance
clear vision




Double-necked flask (25 ml. round bottom)
Material : Borosilicate glass
Capacity：25ml
Middle joint : 24
Side joints : 24
high temperature resistance
clear vision




Double-necked flask (25 ml. round bottom)
Material : Borosilicate glass
Capacity：25ml
Middle Joint : 19
Side joints : 14
high temperature resistance
clear visibility




Double-necked flask (25 ml. round bottom)
Material : Borosilicate glass
Capacity：25ml
Middle joint : 24
Side joints : 19
high temperature resistance
clear vision




Double-necked flask (50 ml. round bottom)
Material : Borosilicate glass
Capacity：50ml
Middle joint : 14
Side joints : 14
high temperature resistance
clear visibility


Double-necked flask (50 ml. round bottom)
Material : Borosilicate glass
Capacity：50ml
Middle Joint : 19
Side joints : 19
high temperature resistance
clear vision