PN, I have just bought a number of emergency showers for certain installations at Grimsby and Colchester. I was amazed at the specification. 1200 l tank. It automatically did a water change every so often (to prevent the water going stagnant re legionella). Operated by a treadle platform, a micro switch to sound an alarm, most importantly they were heated. Not just to prevent freezing but so the water was tepid to save the user from getting two lumps in his throat.
Is NaOH as harmful as HTP?
Enjoying this thread as usual.