Educational Institute
National University of SingaporeRivery Valley High School
Singapore PolytechnicRaffles Girls' School
Ngee Ann PolytechnicSingapore Chinese Girls' School
Anglo-Chinese Junior CollegeNUS High School of Mathematics and Science
Nanyang Junior CollegeSiglap Secondary School
Yishun Junior CollegeNorthview Secondary School
Innova Junior CollegeSi Ling Secondary School
Raffles Junior CollegeMayflower Secondary School

Government Bodies
National Environment AgencySembawang Fuel Experimental Station
Singapore Botanical GardensMOE (Ventor control unit)

Non-Profit Organization
Society for the Prevention of Cruelty to AnimalsS.A.T.A (Laboratory)
Thong Chai Medical InstitutionFar Eastern Academy

Electronic Manufacturer
Hewlett Packard Pte Ltd Lucent Technologies Microelectronic Pte Ltd
Seagate Technology International Pte LtdChartered industries of Singapore Pte Ltd
National Semi Conductor Pte LtdSPT Asia Pte Ltd

Health Sector
Gleneagles HospitalThompson Medical Centre
Mount Elizabeth HospitalRaffles Hospital

Private Sector
Geo Service EquipmentsRobertson Research
Halliburtun Singapore Ptd LtdFar East Gemological Laboratory
Smithline Beecham PharmaceuticalsClariant Singapore Pte Ltd