Ammonium iron(II) sulfate Solution

Ammonium iron(II) sulfate Solution 12g/L in H2O，0.03mol/L in H2O，0.07mol/L in H2O，0.3mol/L in H2O，35g/L in H2O，15g/L in H2O，10g/L in H2O，25g/L in H2O，30g/L in H2O，40g/L in H2O，45g/L in H2O，49g/L in H2O，100g/L in H2O，200g/L in H2O，0.02mol/L in H2O，0.1M in H2O(CP)，0.05M in H2O(CP)