Immunochromatography (Lateral Flow Test Components)

A wide variety of membranes is available to meet the requirements of different tests. These membranes are directly cast on a transparent polyester backing to improve the handling strength. Standard polyester film is 100 μm thick, although other thickness can be available on order.

Type CNPF - Lower protein binding
Type CNPC - Higher protein binding
Type CNPH-N - Highest protein binding

Characteristics	Pore Size (Wicking Time)
Characteristics	5, 8 μm (180-220 sec)	10, 12 μm (110-150 sec)	15 μm (70-90 sec)
Sensitivity	Highest	Medium	Lower
Migration Speed	Slower	Medium	Faster
Test Time	Longer	Medium	Quick
Line Intensity	Sharp	Sharp	Relatively Diffused

	Pore Size (Wicking Time)	Typical Application
	5, 8 μm (180-220 sec)	HbsAg Serum Test Urine Ab Tests Environmental and Agricultural Analytes Milk Testing
	10, 12 μm (110-150 sec)	hCG Heart disease markers Cancer markers Drugs of Abuse Infectious disease tests Whole blood tests Environmental and Agriculture analytes
	15 μm (70-90 sec)	hCG Malaria Whole blood tests

mdi recommends storage of membrane rolls in original foil packing at 15 °C to 20 °C for longer shelf life. The
membrane rolls should be kept away from direct sunlight and heat radiators. The membrane is inflammable when
subjected to direct heat.

Wicking Rate

Information

Example 1

Example 2

Example 3

Membrane
Type

CNPC-SS12,15 µm

CNPF-SN12, 10 µm

90CNPH-N-SS40

Width of roll
(in mm)*

25mm

20 mm

28mm

Length of roll
(in meters**)

50 M or 100 M

Quantity

20,000 M

15,000 M

18,000 M

* The width is as per the customer requirement. 25 mm is most widely used membrane size.

** The membranes in reel form are supplied on standard 3 inches plastic core.