Hi there! I used a horizontal furnace under hydrogen (reductive gas) and nitrogen (protective gas) to reduce some kind of lanthanum nickel oxide. After reduction and air-cooling, I took the sample out of the furnace. The sample started to flame and been oxidized. There was no time to move the sample into glove box or somewhere to protect from oxygen. Are there any ways to protect my sample from expose to air? And ways for storage? Thanks a million!!