Emailing on behalf of Prof. Haiyan Wang: Dear MSE colleagues and students, How are you! We are looking for a missing argon tank delivered from Airgas yesterday to ARMS gas cage. Airgas delivered a total of 5 tanks to the AMRS cage and we have found 4 of those. A similar Argon tank image is attached for your reference. Since there is no PI names labeled on the tank, there is a possibility it might be picked up by mistake. We ask for your help to check if you happen to see the tank in your labs. Most of the groups are using Indiana oxygen and the bottles are quite different from the Airgas ones. The concern is that we will have to pay for the missing tank fee in addition to the gas and rental charge if we could not locate the tank. Your help is very much appreciated! Best regards, Haiyan Wang