Jed the information on the electrolyser supplier website on electrolyte is as follows:
"Enapter uses a 1% KOH solution for the electrolysis. It is a clear, soapy liquid which is easily produced by dissolving KOH pallets in purified water. The KOH can be purchased from companies which use green energy for the chemical extraction.
How green the KOH is produced and deposited depends on the manufacturing as well as the disposal management company that you chose. The disposal conditions depend on the company’s health and safety policies as well as the national and local laws and regulations.
However, Enapter electrolysers are not using noble metals which could dissolve in the electrolyte, nor high concentrated chemicals. So, the electrolyte can be disposed of in a more environmental-friendly, easier, and cheaper way compared to other technologies."
on water purity their information says: "Enapter electrolysers are highly resilient to water input and can be filled with purified rainwater or tap water. A reverse osmosis process with resin filters can achieve the water quality required. The water input to the electrolyser must be desalinated and have a conductivity of < 20 μS/cm."
The links to this information respectively are:
https://handbook.enapter.com/knowledge_base/aem_technology.html
and
