PEL-LOK L64 is Elé’s brand of Poloxamer 184. It is a normal, as opposed to reverse, EO/PO block copolymer surfactant with terminal primary hydroxyl groups. It is 100% active, has a molecular weight of approx. 2900 Daltons and is relatively nontoxic. PEL-LOK L64 is a liquid at typical ambient temperatures. It has a higher HLB and is soluble in water at room temperature.