Use: Applied in distilling and purifying the high boil point organic or inorganic compound in the control laboratory 。The flask is often assembled with distilling tube、cooling pipe 、 two-way connecting adapter 、etc, to form distillation equipment or reduced pressure distillation equipment。The flasks of volume over 5000ml are used as produce tool of small scale in industry firms. round－bottom short－necked flask 25ml / 14 25ml / 19 50ml / 14 50ml / 19 100ml / 14 100ml / 19 100ml / 24 250ml / 19 250ml / 24 500ml / 19 500ml / 24 1000ml / 24 2000ml / 24 2000ml / 29 3000ml / 34 5000ml / 40 10000ml / 50