Household and similar electrical air cleaning appliances - Method for measuring performance - Part 2-2: Particular requirements for determination of chemical gas reduction

Household and similar electrical air cleaning appliances - Measurement of performance - Part 2-5: Particular requirements for change in performance over time on reduction of particulate matter

Wireless Power Transfer - Measuring method for wireless power transfer efficiency and standby power - Mobile phone; German version 100/3555/CD:2021

Protective devices based on semiconductor technology for household and similar use - Part 1: Semiconductor Residual current operated circuit-breakers with integral Overcurrent protection for household and similar uses IEC/SC23E

Fire detection and fire alarm systems - Part 33: Components of voice alarm systems - Active loudspeakers

Industrial systems, installations and equipment and industrial products - Structuring principles and reference designation - - Part 20: Aircraft systems

Testing fresh concrete - Part 14: Invert cone flow time

Testing concrete in structures - Part 5: Determination of concrete cover using magneto-inductive covermeters

Air conditioners, liquid chilling packages, heat pumps, process chillers and dehumidifiers with electrically driven compressors - Determination of the sound power level - Part 3: hybrid units

Welding consumables - Testing of welding consumables by means of weld metal specimens - Part 4: Test piece for determining the hardness of surfacing