ISO INTERNATIONAL STANDARD 21470 First edition 2020-11 Infant formula and adult nutritionals Simultaneous determination of total vitamins B,, B2: B3 and B - Enzymatic digestion and LC-MS/MS Formules infantiles et produits nutritionnels pour adultes - Determination simultanée de la teneur en vitamines Bu, Bz, B et B -Digestion enzymatique et CL-SM/SM Reference number IS0 21470:2020(E) Tso @ ISO 2020 IS0 21470:2020(E) COPYRIGHT PROTECTED DOCUMENT @IS02020 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 any form or by any means, electronic or mechanical, including photocopying, or posting pn the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below orIso's member body inthe country oftherequester. ISO copyright office CP 401 . Ch. de Blandonnet 8 CH-1214 Vernier,Geneva Phone: +41 22 749 01 11 Email: copyright@iso.org Website: www.iso.org Published in Switz.erland ii @ IS0 2020 - All rights reserved