One liter of<unk>  contains:
130 mEq of sodium ion = 130 mmol/L.
109 mEq of chloride ion = 109 mmol/L.
28 mEq of<unk> = 28 mmol/L.
4 mEq of potassium ion = 4 mmol/L.
3 mEq of calcium ion = 1.5 mmol/L .
Generally, the sodium, chloride, potassium and<unk> come from NaCl (sodium chloride), NaC3H5O3 (sodium<unk> , CaCl2 (calcium chloride), and KCl (potassium chloride).
There are slight variations for the composition for<unk> 's as supplied by different manufacturers. As such, the term<unk> 's<unk> should not be equated with one precise formulation.
Lactated Ringer's solution
Altrose
Polyethylene glycol-electrolyte solution 
Dextran
Sodium chloride 
Sodium chloride
Bovine serum albumin
Mineral water