Corrosion testing apparatuses and associated methods

A testing method comprising:

• providing a first fluid in a first reservoir maintained at a first temperature state under anoxic conditions;
• transferring a first fluid stream comprising a defined volume of the first fluid from the first reservoir to a first pre-conditioning chamber in fluid communication with the first reservoir;
• maintaining the defined volume of the first fluid in the first pre-conditioning chamber under anoxic conditions for a first predetermined conditioning time at a second temperature state different than the first temperature state, the defined volume of the first fluid being pressurized with one or more anoxic gases during the first predetermined conditioning time;
• transferring the defined volume of the first fluid from the first pre-conditioning chamber to a first autoclave chamber in fluid communication with the first pre-conditioning chamber, the first autoclave chamber containing one or more metal test coupons therein;
• maintaining the defined volume of the first fluid in the first autoclave chamber at about the second temperature state or a third temperature state under anoxic conditions for a first predetermined testing time, the defined volume of the first fluid being pressurized with one or more anoxic gases and agitated with an impeller in the first autoclave chamber during the first predetermined testing time;
• and
• transferring the defined volume of the first fluid from the first autoclave chamber to one or more sampling receptacles in fluid communication with the first autoclave chamber, the one or more sampling receptacles maintaining the defined volume of the first fluid under anoxic conditions.