Carbon Monoxide 13C 16O (13C16O) Reference Cell.
These flame-sealed cells contain 600 Torr of >99.9% chemically pure, isotopically pure 13C, 16O carbon monoxide (13C16O) at room temperature. They are used for calibration of tunable lasers around 4150-4350 and 6120-6270 cm-1 (1595-1635, 2300-2410 nm). Carbon monoxide is a NIST Telecom Standard Reference Material (SRM) 2515.
The quartz cell body is cylindrical in shape; outer diameter 10 mm; length 150 mm. The tipoff stem is centered on the cell, protruding not more than 8 mm from the cell body. Windows are angled 11° off of normal and have a 2° interior wedge to prevent back-reflection and etalon effects.