Links to member companies (partial listing)

BP
Conoco
Shell Pipeline
Intertek Caleb Brett
Marathon Ashland
BakerPetrolite

Links to related websites

CCQTA
ASTM
Energy Institute
CanmetENERGY

Crude Oil Assay Information:

The sources listed below are linked to websites that have useful crude oil assay information.
The COQA has not verified the information contained therein. 

Mars Crude
Poseidon Oil
Crude Oil Data
Statoil
Canadian Association of Petroleum Producers
Crude Oil Database
ExxonMobil  
BP Crudes
Energy Intelligence (charges may apply)
Platts
US DOE / SPR
ChevronTexaco
Total   
Oilfield Glossary of Terms (Schlumberger) 
Petroleum Refining Corrosion
Crude Oil Testing Methods  
Petroleum Refining and Chemical Engineering