To prepare 1 liter of a 0.3m glucose solution: - put 54g of glucose in a 1 liter vial - add 1 kg (one liter) of water - shake and remove the excess volume.

To prepare 1 liter of a 0.3m NaCl solution: - put 17.6g of NaCl in a 1 liter vial, - add 1 kg (one liter) of water - shake and remove the excess volume.

To prepare 1 liter of a 0.3m CaCl2 solution: - put 33.3 g of CaCl2 in a 1 liter vial - add 1 kg (one liter) of water - shake and remove the excess volume.

To prepare 1 liter of a 0.3m NaCl, 0.3M glucose solution: - put 17.6 g of NaCl and 54g of glucose in a 1 liter vial - add 1 kg (one liter) of water - shake and remove the excess volume.