No hay artículos en el carro
No hay artículos en el carroAcerca de nosotros: COETTER es una empresa innovadora, dedicada a la investigación de membranas microporosas, nanofibras y membranas de ultrafiltración, proporcionando servicio para la industria biofarmacéutica. Creemos que: la colaboración hace un mejor futuro. Parámetros del producto: Tamaño del poro: 0,2 μm. Diámetro: 33 mm. Presión: 7 bar. Área de filtro efectiva: 4,5 cm. Paquete: 1 cm. MemMemMemMemMemMemMemMemMaterial del ane: PVDFShell Material: Polipropileno (PP) 1-10 ml Muestras: Se recomienda filtro de jeringa de 13 mm, el volumen de retención es inferior a 25 μl. Muestras de 5 a 100 ml: se recomienda filtro de jeringa de 25 mm, el volumen de retención es inferior a 100 μl. Muestras de 10 a 20000 ml. El volumen es inferior a 125 μl. Nuestra serie: por favor ponte en contacto con nosotros si tienes algún problema sobre el producto, haremos todo lo posible para servirte.
Bart
Comentado en los Estados Unidos el 5 de octubre de 2024
Perfectly filtered, did not easily clog with a 3CC syringe even after filtering a substantial volume of product. Good stuff!
João Pedro Emrich Accioly
Comentado en los Estados Unidos el 28 de octubre de 2024
A bit fragile on syringe pressure, but overall a great product
Wombat37
Comentado en los Estados Unidos el 20 de julio de 2023
I have a home-made photometer that I use to measure beer color. It’s very important that the beer be free of any suspended particles (like yeast) to make these measurements or else there’s light blocking and scattering effects that can affect the result. To eliminate these errors, it’s important that the beer be clear of any suspended matter and so it should be filtered beforehand if necessary. Filters with a 0.2µm pore size should be more than adequate to perform this filtration. I’ve used 13mm x 0.2µm filters in the past to perform this filtration and, while they were effective, the filters got blocked after passage of only 2 or 3mL of beer. I’m hoping that these 33mm filters from Cobetter will do a better job.Beer was loaded into a 3mL plastic syringe and one of these filters was attached to its Luer-lock outlet. The plunger was depressed, and the beer was fed into a 2-mL cuvette. I had no problems with blockage that I had experienced with the smaller filters. The photos show the difference in clarity between filtered and unfiltered of this particular beer (Berliner Weisse Beer). The photometer measured the color (in SRM units) for the unfiltered beer as 4.71 and for the filtered beer as 2.35, so removing the cloudiness made a big difference to the measurement.These filters are nicely packaged in sealed individual bubble-packs. They are sterile. I suppose all this comes at a price and perhaps the quality of this product is too good for my purposes. I don’t care about contamination or sterility – I just want to measure beer color. Having said that, the price is not crazy and $13 for 10 filters is not prohibitive.These are good quality filters at a reasonable price but perhaps a bit too good for my needs.
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