Safety of household and similar electrical appliances. Part 2-24. Particular requirements for refrigerating appliances, ice-cream appliances and ice-makers
Water quality. Evaluation of ultimate aerobic biodegradability of organic compounds in aqueous medium by determination of oxygen demand in a closed respirometer
Lanthanum, neodymium, gadolinium, dysprosium, yttrium, and their oxides. Method of determination of impurities as oxides of praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium