Conventional cylindrical filters can begin to draw air into the system when nearly 10% of the solvent remains in the reservoir. Our unique Last Drop filter with a flat filter element that sits parallel to the bottom of the reservoir. This design ensures all but the last 2% of the mobile phase is filtered without drawing air into the system.
Last Drop filters allow more analyses per batch of mobile phase and help reduce hazardous waste. Made from a 316 stainless, PTFE, or hydrophobic PE filter element pressed into an inert PTFE housing. The top of the housing has a 1/4-28 nut and ferrule or a stepped PEEK fitting connector that slips into 1.5 mm, 2.2 mm, or 3.5 mm ID pump inlet lines.
Refer also to our Economy Last Drop Mobile Phase Filters in two sizes to fit a variety of bottle neck diameters.
