Whatman FF membranes are plastic backed versions of the AE membrane.  FF membranes are constructed of 100% nitrocellulose with no treatments post-manufacture.  These plastic-backed membranes are ideal for lateral-flow assays that require faster wicking rates, and have all the benefits and features as the unbacked AE membranes.

 
Features and Benefits

• Constructed of 100% nitrocellulose.
  Complete lateral flow system optimization and consistent performance.
• Excellent membrane purity.
  Full control of test system additive levels.
• Low background.
  Clearer test results.
• Extensive range of flow rates.
  Meets the requirements of even the most difficult assays.

Product Range and Properties

FF 60
Mylar cast membrane construction. A very fast wicking membrane for use with highly viscous samples.

FF 85
Mylar cast membrane construction. A general purpose membrane for use with most sample types.

FF 125
Mylar cast membrane construction. A plastic cast membrane that gives the strongest and sharpest capture lines for use with low- viscosity samples.

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

Typical Test Data - FF Direct-Cast Membranes
Description	Capillary Rise* (s/4 cm)	Caliper+ (μm)
FF 60	45--75	200
FF 85	65--105	200
FF 125	100--150	200
* Cross web measured with water (rise time with serum or other liquids will differ). +Including standard polyester backing 100μm thick.