Sample preparation

Many assays require that potential contaminants be removed from samples prior to application. Depending on the sample type and specific components to be removed, several different materials can be utilized. Whatman offers a full range of proven, high-quality sample prep technologies.

Features and Benefits

High flow rates and capacity

Whatman glass fibre materials provide superior performance compared with fine pore membranes

Selective particulate removal

Whatman filters enable particles of known diameters to be removed

Guaranteed performance

Whatman glass fibre is the recognized gold standard for particle filtration

Product Range and Properties

VF4
A binder-free glass fibre filter that removes particles greater than 0.7µm, e.g., some bacteria.

VF3 
A binder-free glass fibre filter that removes particles greater than 1.2µm, e.g., yeast cells

VF5
A binder-free glass fiber filter that removes particles greater than 1µm but with higher loading capacity than VF3 and VF4

GF/AVA
A polyvinyl alcohol-bound glass fibre filter that retains medium-sized particulates. Offers improved strength compared to binder-free materials.

MF1
A polyvinyl alcohol-bound glass fiber filter that removes particles lgreater than 2µm with moderate loading capacity, e.g., red cells and platelets

VF1
A binder-free glass fiber filter that removes particles greater than 2.5µm with high loading capacity, e.g., red cells

VF2
A polyvinyl alcolhol-bound glass fiber filter that removes particles greater than 3µm, e.g., mammalian cells

GF/DVA
A thick, polyvinyl alcohol-bound glass fibre filter for rapid filtration and removal of coarse particulates.

VFE
A binder-free glass fiber filter that removes particles greater than 5µm, e.g., human white cells or epithilial cells

Standard Sizes
Reels are available for some of the items in the following standard sizes:

12mm x 50m
17mm x 50m
22mm x 50m 

Typical Test Data - Sample Preparation Materials
Grade	Particle Size Retained (98% efficiency in liquid)
VF4	0.7µm
VF3	1.2µm
VF5	1.0µm
GF/AVA	1.7µm
MF1	2µm
VF1	2.5µm
VF2	3µm
GF/DVA	3.5µm
VFE	5µm