Reporter ISLAMABAD - Serena Hotel has received the certificate of approval from DAS Certification, UK accredited by United Kingdom Accreditation Services (UKAS) for its environmental management system (BS EN ISO 14001) in compliance with British Standard (BS), European Number (EN) and International Organisation for Standardisation (ISO), the first of its kind to be conferred upon a hotel in the country. ISO 14001 is one of the standards published by the ISO, a worldwide federation of standard bodies based in Geneva, Switzerland. It was established in 1946 to develop standardization and facilitate international goods and services. 14001 is an environmental category. ISO accreditation means a company has complied with environmental standards.