• Oasis Chemical Corp.
  (CN)

  ---

• Occidental Chemical Corporation
  (USA)

  ---

• Ocean Optics
  (USA)

  ---

• Octel Corp.
  (UK)

  ---

• Oelmühle Leer Connemann GmbH & Co.
  (D) [D, E, NL]

  ---

• Oel-Sauer
  (D) [D]

  ---

• Ohaus GmbH
  (D) [E]

  ---

• OI Corporation
  (USA)

  ---

• Oil Spill Response Ltd.
  (UK)

  ---

• Oki Electric Industry Co. Ltd.
  (JP)

  ---

• OlainFarm
  (LV)

  ---

• Olin Chlor Alkali Products
  (USA)

  ---

• Olin Hydrosulfite
  (USA)

  ---

• Oliver y Batlle S.A.
  (ES)

  ---

• Olmec Advanced Materials Ltd.
  (UK)

  ---

• Olympus Optical Co. Ltd.
  (JP)

  ---

• Olympus Services
  Chemical Trader, manufacturer and Software Services (USA)

  ---

• OM Group
  (USA, FI)

  ---

• Omicron Biochemicals
  (USA)

  ---

• OMIKRON GmbH
  (D) [D]

  ---

• Omya
  (USA, A, IT, F)

  ---

• Onbio Inc.
  Global Source, and Resource for the Life Sciences (CA) [E]

  ---

• Oncogene Science Diagnostics Inc.
  (USA)

  ---

• Opfermann Arzneimittel GmbH
  (D)

  ---

• Optical Solutions, Inc.
  We, Optical Solutions, Inc., provide fiber optic filter photometers, diode array spectrophotometers and sample probes for use in the UV/VIS/NIR (USA) [E]

  ---

• Optronic Laboratories, Inc.
  (USA)

  ---

• Orbital Sciences
  (USA)

  ---

• Orga Lab GmbH
  (D)

  ---

• Organon
  (D)

  ---

• Orica
  ICI Australia (AU)

  ---

• Oriel Instruments
  (USA)

  ---

• OriGene Technologies
  (USA)

  ---

• Orion Pharma
  (FI)

  ---

• Orion Research Inc.
  now: Thermo Orion (USA)

  ---

• Ormecon Chemie
  (D) [D, E]

  ---

• Orphan Europe GmbH
  (D)

  ---

• Oryza Laboratories
  (USA)

  ---

• OSI Pharmaceuticals
  (USA)

  ---

• Osnatol
  Belmer Lackfabrik OSNATOL-Werk GmbH & Co. KG (D) [D]

  ---

• Osteometer Biotech
  (DK)

  ---

• Oswel Research Products Ltd.
  (UK)

  ---

• Otsuka Pharmaceutical Co. Ltd.
  (JP)

  ---

• Overlack
  (D) [D, E]

  ---

• Owens Corning
  (USA)

  ---

• Oxarc
  (USA)

  ---

• Oxeno
  Degussa (D) [D, E]

  ---

• Oxford Asymmetry International
  now: Evotec OAI

  ---

• Oxford Chemicals
  now: Yule Catto & Co PLC

  ---

• Oxford Cryosystems
  (UK)

  ---

• Oxford Instruments
  (UK)

  ---

• Oxford Instruments GmbH
  (D, UK)

  ---

• Oxford Molecular Group PLC
  now: Accelrys

  ---

• Oxis International
  (USA)

  ---

• Oxiteno
  (BR)

  ---

• OxyChem
  (USA)

  ---

back