2x 1L Erlenmeyer 20 mL beaker 6x 500 mL Erlenmeyer 6x 250 ml Erlenmeyer water Hot plate and stir bar; Chemicals 4.0 g potassium iodate (KIO3) 4.0 g starch 0.8 g sodium bisulfite (NaHSO3) 10 mL - 1M ...

In many labs, you will see Erlenmeyer flasks used for shake cultures filled to 50% of the nominal volume, which is not a good idea, considering that most cultures are supposed to be aerobic ones.