ISO INTERNATIONAL STANDARD 23970 IDF 252 First edition 2021-09 Milk, milk products and infant formula Determination of melamine and cyanuric acid by liquid chromatography and tandem mass spectrometry (LC-MS/MS) Lait,produitslaitiersetformuleinfantile-Determinationdela teneur en melamine et en acide cyanurique par chromatographie en phase liquide couplee a la spectrométrie de masse en tandem (CL-SM) SM) Reference numbers ISO 23970:2021(E) [so IDF252:2021(E) @ ISO and IDF 2021 IS0 23970:2021(E) IDF 252:2021(E) COPYRIGHTPROTECTEDDOCUMENT ISO and IDF 2021 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in anyform or by any means,electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below orIso'smemberbodyinthecountryoftherequester. ISO copyright office International Dairy Federation CP 401 : Ch.de Blandonnet 8 Silver Building·Bd Auguste Reyers 70/B CH-1214 Vernier, Geneva B-1030 Brussels Phone:+41227490111 Phone:+3223256740 Fax: +32 2 325 67 41 Email:[email protected] Email: [email protected] Website:www.iso.org Website: www.fil-idf.org Published in Switzerland ii ISOand IDF2021-All rights reserved