https://www.selleckchem.com/pr....oducts/gkt137831.htm
To investigate if the detergent sclerosant sodium tetradecyl sulfate (STS) is deactivated by the lipid-based contrast agent ethiodised oil. 3% STS was mixed with ethiodised oil and room air in a 214 ratio in two luer lock syringes and a three way connector and agitated to make foam (the Tessari technique) to ****te the clinical use of the products. The assay of STS in the mixture was assessed using the British Pharmacopoeia method. Briefly this is a manual titration method where the solution of STS is mixed with an indicator soluti