Australia's Science Forum

Over the past 30 years as a Labbie, I have been required to make chlorine gas. I acted under instruction and supervision for the first couple of attempts (yes, it does produce irritating gas!). I've always used approx. 1.0g manganese dioxide in a flask and then enough conc. hydrochloric to cover. Th...

Hi, it's not all that difficult to bend glass tubing and fit it through rubber stoppers.
Just takes a little patience. Some artistic variation does occur between the swan necks but this does add to its individuality.
Keep a set and re-use each year.