Usage: 1.Put the small packaged powder into 13L clean water temperatured at 50, then gradually pour into the bigger packaged powder and stir at the same time, finally add clean water to make the total volume to 20L 2.The drug liquid should be mixed well one day in advance before using Notice: 1.The newly made drug liquid can develop between 18,20 2.Can? be mixed with fixative 3.Suitable for medical X-ray film and industrial X-ray film. 4.Expiry: 18 months from production date.