Mineral fertilizers. Method for determination of total mass fraction of nitrogen in compound fertilizers (in ammonium and amide forms, using hypochlorite method)
Non-domestic gas-fired convective air heaters, incorporating a fan to transportation of combustion air or combustion products, nominal heat output of up to 300 kW
Connecting devices for low voltage circuits for household and similar purposes. Part 2-5. Particular requirements for connecting boxes ( junction and /or tapping of copper conductors) for terminals of connecting devices
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