Immunopore diagnostic membrane

Whatman Immunopore was the first nitrocellulose membrane specifically designed for lateral flow diagnostics in 1995. Since then, the manufacturing process has been continuously refined to increase consistency and expand the range of wicking rates. Whatman Immunopore products include a proprietary polymer in the membrane matrix to ensure rapid rewetting and low background signal-eliminating protein-binding interference commonly experienced with surfactants.

• High sensitivity.
  Capture line shows high intensity, making low positives easy to read and improving test range.
• High consistency.
  Demonstrate outstanding within- and between-batch consistency for lateral wicking rates (see graphs), making test development more predictable.
• Long shelf life.
  No significant performance change within 18 month of storage under ambient conditions, simplifying membrane handling and storage operations.
• Product versatility.
  Strong results regardless of capture reagent or analyte type. Can be utilized in virtually all tests.

Product Range and Properties

Immunopore® SP
Mylar cast membrane construction. Maximum sensitivity coupled with low flow/wicking rate. Ideal for use with low-viscosity samples when maximum capture line intensity is required.

Immunopore® FP
Mylar cast membrane construction. Excellent general membrane offers high capture line intensity coupled with faster flow/wicking rate.

Immunopore® RP
Mylar cast membrane construction. Fastest flowing membrane, yielding shorter test times while still retaining excellent capture line intensity and reproducibility.

Standard Sizes
Available in 50m rolls of 25mm width, for other sizes please inquire.

Typical Test Data - immunopore® Direct-Cast Membranes
Description	Capillary Rise* (s/4 cm)	Caliper+ (μm)
Immunopore® RP	85--115	200
Immunopore® FP	110--150	200
Immunopore® SP	160--220	200
* Cross web measured with water (rise time with serum or other liquids will differ). +Including standard polyester backing 100μm thick.