Be careful with some of the ebay suppliers, the chemicals are usually fine, but i recently bought 2 1/2 litres of conc ammonia,which i left in a warmish place . The container split at the top on the seam due to the internal pressure in the rather thin container. The ammonia was actually being forced out as an aerosol spray.I had to use a respirator outside to put into a couple of more suitable containers(which i luckily had from previous purchases of the same chemical.)
Ths is where i bought mine , it was 33-34% ammonia soln. Could have caused a more serious accident if i hadnt noticed immediately by the smell. https://www.ebay.co.uk/usr/redoka-chems
