Hi all Just wondering about what to do with this. I have a test tube in which FeS has been made (plugged with mineral wool), it also has traces of sulfur stuck to the side of the tube of course. I have read on the hazcard that FeS can be disposed in the bin, so was just going to put the tube in broken glass bin. I also have another tube where the inside surface is coated with mainly sulfur powder as I mixed the Fe and S in this tube, but cannot get the sulfur powder off the sides. I understand that excess sulfur needs to be collected for registered waste disposal, so don't really know what to do with my test tubes. What do you guys do with excess sulfur in small amounts / how do you clear up this practical? Thanks!