This publication is made possible by the generous support of the US Agency for International Development (USAID) under contract no. 7200AA18C00074 for Medicines, Technologies, and Pharmaceutical Services (MTaPS) Program. The contents of this publication are the responsibility of the authors and do not necessarily reflect the views of USAID or the US Government. This document is published by the Department of Health (DOH) – Supply Chain Management Service (SCMS) with office at Building 12, San Lazaro Compound, Tayuman St. cor. Rizal Ave., Sta. Cruz, Manila, Philippines 1003, for general distribution. All rights reserved. Subject to the acknowledgement of DOH-SCMS, the Manual may be freely abstracted, reproduced or translated in part or in whole for non-commercial purposes only. If the entire work or substantial portions will be translated or reproduced, permission should be requested from the DOH-SCMS.