Beli whatman di monotaro.id

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.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 processIn microbiological colony counting procedures, the color contrast between the surface and the colonies facilitates the counting process.Plain or griddedMany 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.Sterile filtersFor those laboratories preferring to use membranes sterilized by autoclaving for microbiological work, Whatman provides black gridded membranes in packs with pads ready for laboratory autoclaving.

Specification : JIS standard: Class 1, Domestic filter-paper equivalent: No.1, Particle maintenance ability (micrometer):11, thickness (micrometer):0.18, ash-content (%):0.06, weight (g/m2):87, initial rate-of-filtration (second):40

The filters feature fine particle retention for a range of liquid and air filtration applications. These have a nominal particle retention of 1.6µm at 98% efficiency and are suited for a variety of applications involving large sample volumes such as:Water and air pollution monitoring and wastewater filteringFoodstuff analysisFiltering of algae and bacteria culturesProtein filtrationRadioimmunoassay of weak β emittersGravimetric determination of airborne particulatesGrade GF/A binder-free Whatman glass microfiber filters are available in a wide range of sizes in circles and sheets.Find the right particle retention rating and thickness for your analysis in the Whatman binder-free glass microfiber range.Looking for a filter paper, membrane filter, or syringe filter? Let Cytiva help you find the optimal filter for your needs to ensure reliable analysis.

Suitable for filtering fine particles. It is about twice as thick as Grade 1. Due to its large load capacity, it does not easily clog even if it holds a large amount of precipitate, and it has strong wettability and is used for filtration with a Büchner funnel. It has high absorbency and is suitable as a sample carrier.

GE's Whatman EPM 2000 air filters are used in high-volume PM-10 sampling equipment. Manufactured from 100% pure borosilicate glass, they enable detailed chemical analysis of trace pollutants with minimal interference.

GE's Whatman EPM 2000 air filters are used in high-volume PM-10 sampling equipment. Manufactured from 100% pure borosilicate glass, they enable detailed chemical analysis of trace pollutants with minimal interference.