Stream introducing the Depolox 4 analysers, and an explanation of what they are.
Nernst slope: https://manicbotanix.com/wp-content/uploads/2016/02/Nernst-slope.jpg
Theory about pH: http://www.all-about-ph.com/ph-versus-temperature.html
Depolox 4 manual: http://www.hydramet.com.au/cproot/790/2/Depolox4_Chlorine%20Gas%20Controller%20BA40004e_0694.pdf
