Last Drop Mobile Phase Filters - Low Pressure

• No loss of mobile phase

• Biocompatible PTFE frits or stainless steel frits

• Three porosity options

• Two connector types: stepped tubing and 1/4-28 fitting

• Materials:
  * Body - PTFE
  * Frits - PTFE/Type 312 Stainless

• Stepped tubing version is for 1.5, 2.2, and 3.5 mm ID tubing

• Fitting version (for 1/8" OD tubing) includes PEEK 1/4-28 nut with ETFE ferrule

• We recommend metal-free PTFE filters for sensitive biochromatography applications where metal surfaces may corrode or interact with samples.

The Last Drop mobile phase filter allows more analyses per batch of mobile phase and helps reduce hazardous waste. The flat filter element sits parallel to the bottom of the reservoir, allowing the Last Drop to filter all but the last 2% of the mobile phase from the reservoir without drawing air into the system. Compare this with conventional cylindrical filters that can begin to draw air into the system when nearly 10% of the solvent remains in the reservoir.

The Last Drop mobile phase filter consists of a 316 stainless or PTFE 2.5 µm 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 which slips into 1.5, 2.2, or 3.5 mm ID pump inlet lines.

Stepped tubing
connector

PTFE

2.5 µm

1.2 ml/min

JR-9000-0520

5 µm

2.6 ml/min

JR-9000-0521

10 µm

3.5 ml/min

JR-9000-0522

Polyethylene

10 µm

11 ml/min

JR-9000-0522H

Stainless

2 µm

28 ml/min

JR-9000-0530

5 µm

30 ml/min

JR-9000-0531

10 µm

30 ml/min

JR-9000-0532

Fitting
connector

PTFE

2.5 µm

1.2 ml/min

JR-9000-0520F

5 µm

2.6 ml/min

JR-9000-0521F

10 µm

3.5 ml/min

JR-9000-0522F

Polyethylene

10 µm

11 ml/min

JR-9000-0522HF

Stainless

2 µm

28 ml/min

JR-9000-0530F

5 µm

30 ml/min

JR-9000-0531F

10 µm

30 ml/min

JR-9000-0532F