BS EN 16037:2012 Chemicals used for treatment of water intended for human consumption. Sodium hydrogen sulfate was changed to LST EN 50525-2-21-2011 Electric cables - Low voltage energy cables of rated voltages up to and including 450/750 V (Uo/U) -- Part 2-21: Cables for general applications - Flexible cables with crosslinked elastomeric insulation.
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