Notes: The SPE Cartridges (mixed bed) are mixed-mode cartridges packed with non-polar and strong anion exchange chemistries. As this product relates to Cayman Chemical’s product line, this column has been utilized for the purification of 11-dehydro thromboxane B2 (11-dehydro TXB2) from urine samples.{7635} If your samples are being purified and analyzed for compounds other than 11-dehydro TXB2, you may want to contact Cayman Chemical directly for appropriate technical information.