Beli cellulose di monotaro.id

Cellulose nitrate membranes, circles, plainNarrow pore size distribution for improved surface capture and analysis.Low levels of extractables to ensure sample integrity.Recommended for the majority of routine applications, this membrane is manufactured under strictly controlled conditions. The user will benefit from the performance improvements that are now available in Whatman membrane filters, including very narrow pore size distribution and low levels of extractables.Higher strength and flexibilityMost membranes are inherently brittle and difficult to handle; it is not uncommon for filters to be damaged during loading into holders or while in use. Whatman cellulose nitrate membrane filters have a noticeably improved flexibility and are made to tolerate abuse during handling, loading, and autoclaving without sacrificing integrity. These membranes are among the strongest of their type available, as measured and compared by burst pressure tests.Low extractable levelsThe level of extractables in membrane filters has become more important with advances in filtration or adsorption techniques. In particular, pharmaceutical, immunological, and biomedical tissue culture and trace analysis applications can be adversely affected by high extractable levels. Whatman cellulose nitrate membrane filters have a low level of extractables, generally below that of other membranes of a similar type.Narrow pore size distributionOne of the major features of Whatman membrane filters is the narrow distribution of pore sizes. The rated pore size of these membranes is closely controlled due to the advanced manufacturing and control system. Additionally, the batch-to-batch variation is minimized providing more consistent laboratory results.Increased temperature stabilityMembrane filters are normally autoclaved at 121°C without loss of integrity. Cellulose nitrate membranes are supplied as circles, sheets, or reels.Reduced shrinkageExcessive shrinkage can cause problems during autoclaving and is often the cause of membranes tearing in their holders after autoclaving. It may also cause a reduction in flow rate and total throughput. Whatman membranes exhibit a low shrinkage during autoclaving.White plain filtersThis is the standard membrane filter for the majority of laboratory applications involving particles and cells in the range of 0.1 µm to 12.0 µm. The residue after filtration is found to be almost completely on the surface of the membrane and allows physical recovery of deposits and microscopic examination.

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.

Biologically inert mixtures of cellulose acetate and cellulose nitrate have made MF-Millipore membrane filters one of the most widely used membranes in analytical and research applications. MF-Millipore filters without Triton surfactant contain minimum amounts of wetting agent and have a lower water extractable content than standard MF-Millipore filters.Features & Benefits: - Versatile filter for biological and environmental monitoring applications - Available in a range of pore sizes, colored black or white, with or without a gridded surface - Compatible with ethylene oxide, gamma irradiation, and autoclave sterilization methods

Scouring pads and scrubbers feature abrasive scrubbing ability for efficient removal of stubborn, caked-on grime on many kitchen and outdoor surfaces.

Biologically inert mixtures of cellulose acetate and cellulose nitrate have made MF-Millipore membrane filters one of the most widely used membranes in analytical and research applications. MF-Millipore filters without Triton surfactant contain minimum amounts of wetting agent and have a lower water extractable content than standard MF-Millipore filters.Features & Benefits: - Versatile filter for biological and environmental monitoring applications - Available in a range of pore sizes, colored black or white, with or without a gridded surface - Compatible with ethylene oxide, gamma irradiation, and autoclave sterilization methods

Economical cellulose nitrate (CN) membranes come sterilized by EtO and are individually wrapped. These hydrophilic membranes do not contain any extractable to inhibit or stimulate growth of bacteria, do not affect pH of the medium, and are suitable for both aqueous and protein filtration. Membranes may be exposed to temperatures up to 55°C (131°F). Additional variations are available; call us for details.

Repairing water leaks. Repairs can be made while pressure is applied. The tapes are self-fused and can easily be repaired. The tapes are fused together by the elasticity and adhesion of rubber without adhesive, closing damaged parts and gaps. It can be used without stickiness.Food Sanitation Law Nos. 370 and 85 approvedJIS K6353 (rubber for water supply) approved, U.S. military standard compliant product (MIL-I-46852C)For repairing piping such as water leaks and air leaks, and for repairing various hoses.