I found it. It is a scholarly journal from korea in 2021. I can PM you the entire article.
Here is the interesting argon part. "However, experimental studies have reported that argon is a stronger asphyxiant than helium or nitrogen. Altland et al. [
14] discovered that rats that had been exposed to helium, nitrogen, or argon showed survival rates after one hour of 92%, 60%, and 12% respectively, demonstrating that argon was the strongest asphyxiant. Another study identified that argon gas has a sedative effect via actions on GABA
A, the receptor targeted by benzodiazepines [
15]. Thus, argon could present a more attractive option for those considering suicide as it may help alleviate fear. In Korea, argon gas is inexpensive and easily accessible online without any regard for intended use, so more concerns are arising."
NIce!!! I have all my materials as well. Although question, I feel like micropore is not strong, sticky enough, especially to tape the tube inside the bag. I was thinking stronger like duct tape? Also what do you think of using a PVC tube vs O2 tube? I have both and the gas experts told me to use the O2 tube even thought is SIGNIFICANLTY smaller