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WHA7141124

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

white, hydrophilic, gridded, sterilzation: yes, interleaving paper, without pad, 200 EA, 200 ea, 47 mm diam

Synonyme(s) :

Whatman® nitrocellulose membrane filters, Whatman filter, Z745855, membrane filters, syringe filter

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About This Item

Code UNSPSC :
40161507
Nomenclature NACRES :
NB.24

product name

Whatman® mixed cellulose ester membrane filters, gridded white, pore size 0.45 μm, diam. 47 mm, sterile

Matériaux

gridded white

Stérilité

sterile

Conditionnement

pack of 200 ea

Fabricant/nom de marque

Whatman 7141-124
Whatman Article No. 28420721 (US reference)

Diamètre

47 mm

Dimension de pores

0.45 μm

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Description générale

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.

Caractéristiques et avantages

  • 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.

Autres remarques

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

Informations légales

Whatman is a registered trademark of Cytiva

Pictogrammes

Flame
GHS02

Mention d'avertissement

Warning

Mentions de danger

H228

Conseils de prudence

P280 - P210

Code de la classe de stockage

11 - Combustible Solids

Certificats d'analyse (COA)

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Dori M Landry et al.
Genes & development, 23(23), 2753-2764 (2009-12-03)
Most eukaryotic mRNAs are translated using a cap-dependent mechanism of translation. However, approximately 10% of mammalian mRNAs initiate translation using a cap-independent mechanism that is not well understood. These mRNAs contain an internal ribosome entry site (IRES) located in the

Notre équipe de scientifiques dispose d'une expérience dans tous les secteurs de la recherche, notamment en sciences de la vie, science des matériaux, synthèse chimique, chromatographie, analyse et dans de nombreux autres domaines..

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