Be EXTREMELY careful with these - preferably, get rid of them!!!
These German chemical vials were used to detect different chemical warfare gases and contain various chemicals that react with the different gases in certain ways to indicate which one is present, if any. The whole vial was inserted into a device in which the user would puncture the vial and by means of a hand pump, air was pumped through the vial and the solid content would change color if its specific reagent gas was in the air.
1 black band + 2 glass ampoules with liquid indicates that it contains TOLIDINE - which is a potent carcinogen, and also is toxic.
For the curious this item (1 black band + 2 glass ampoules of liquid) was used to detect hydrogen cyanide.
As a very serious and heartfelt NB:
Should anyone ever come across one of these vials, marked with two green bands, and containing 1 ampoule of liquid, 1 ampoule of a solid, stay far away. These contain either sodium cyanide or potassium cyanide as well as pyridine.
Needless to say the cyanide is highly toxic (one vial contains more than enough to immediately stop your respiratory system and leaving you for dead (one vial contains 80 mg of cyanide, 50 mg is a lethal dose for an adult)), and the pyridine is toxic as well.
Either ends have a very thin plastic film/plate which is easily punctured, squeezed out of place, or otherwise moved.
In short - these are NOT worth collecting. This coming from someone who has more “exciting” ammo than he really cares for.
These vials float up on Norwegian beaches every now and then as many crates of such vials were dumped in the last months of WW2 and the time after.
Here’s a PDF from the Norwegian armed forces research institute describing each color coding and its contents.