Whatman mixed cellulose ester WME filter discs 0.45um pore size white, hydrophilic, gridded, sterile, interleaving paper, pad, 100 ea, 47mm diam

SKU:
WHA7141104
  • $114.00
  • Description

    Whatman® mixed cellulose ester WME filter discs 0.45um pore size

    white, hydrophilic, gridded, sterile, interleaving paper, pad, 100 ea, 47 mm diam

    Synonym(s):
    Whatman filter, Z745839, membrane filters, syringe filter
    UNSPSC Code:
    40161507
    NACRES:
    NB.24

    Properties

    product name

    Whatman® Mixed Cellulose Ester filters white gridded, pore size 0.45 μm, diam. 47 mm, sterile- pack of 100 ea, gridded white, pore size 0.45 μm, diam. 47 mm, sterile

    material

    gridded white

    sterility

    sterile

    packaging

    pack of 100 ea

    manufacturer/tradename

    Whatman 7141-104
    Whatman Article No. 28420719 (US reference)

    diam.

    47 mm

    pore size

    0.45 μm

    Description

    General description

    Whatman mixed cellulose ester membranes are composed of cellulose acetate and cellulose nitrate. These membranes are characterized by a smoother and more uniform surface than pure nitrocellulose filters. Also, the color contrast provided by the filter surface facilitates particle detection and minimizes eye fatigue. The ME range has a lower cellulose acetate content compared to the WME range of membranes.

    Eased counting process: In microbiological colony counting procedures, the color contrast between the surface and the colonies facilitates the counting process.

    Plain or gridded: Many microbiological techniques include colony counting after incubation as the standard method of quantitation. Whatman gridded filters have clearly defined grid lines spaced at 3.1 mm or 5 mm intervals. The special ink used is nontoxic and completely free from bacterial growth inhibitors. Whatman black mixed cellulose esters are available plain for automatic colony counting applications, as well as gridded to assist in manual counting procedures. Black membranes provide contrast between residue or cell colors and the filter without having to counter-stain the membrane.

    Features and Benefits

    • Sterile options available for critical applications.
    • Excellent contrast for easier particle detection.
    • Grids are nontoxic and do not inhibit bacterial growth, ensuring sample integrity.
    • Black plain and black gridded membranes have a mix of cellulose nitrate and cellulose acetate.
    • The membrane offers a high degree of internal surface area for greater adsorption of product.
    • Higher dirt loading capacity.
    • Biologically inert with good thermal stability.
    • No surfactants to contaminate samples.
    • Uniform microporous structure of membrane gives high flow rates.

    Other Notes

    Field of Use : For internal research use only. Products are not intended for diagnostic use or resale.

    Legal Information

    Whatman is a registered trademark of Cytiva