The Techne SR2 Retort Rod is a threaded rod that fits the retort rod fixing on a Stuart SA8 Vortex Mixer (sold separately) to secure vessels during long-term mixing. The rod is 12.5mm in diameter and 300mm in length. StuartBibby Scientific manufactures laboratory equipment such as shakers, centrifuges, incubators, and water baths under the Stuart, Jenway, and Techne brand names. The company is headquartered in Stone, Staffordshire, UK.