Hi, I am in the process of calibrating our GC and one of the products we expect to find in our experiment is H2O2, but we only have 30% H2O2 in the lab. I can test 5% to 25% by dissolving further in water, so I can get some sort of calibration curve, but I'm stuck at 30%, is there a simple way to reduce the water content of the H2O2? I realise that H2O2 in more pure form can be quite dangerous but I cant find it in the Illegal/Dangerous chemical activities thread, so I'm assuming its ok to ask this here. Is there a safe limit? I am going to be injecting it into a GC, are there any precautions I should take? Thanks in advance for any help.