#Membrane #Filtration of #Water - #Legionella

Membrane Filtration of WaterLegionella

Hahnemühle FineArt GmbH is one of the oldest paper manufacturers in Germany. For decades, we have been focused on the development and production of Premium Filter Papers. The brand Albet® LabScience offers a comprehensive range of easy tools for daily lab work. We complete the assortment of filter papers with high quality membranes and syringe filters. Leading companies in the areas of pharmacy, chemistry, food and beverage as well as environmental control trust in our reliable products. Hahnemühle FineArt GmbH • Hahnestr. 5 • 37586 Dassel • Phone: +49 5561 791-687 • [email protected] • www.hahnemuehle.com

The detection of a low number of bacteria - like Legionella - in drinking water is usually done with sterile membranes of mixed cellulose ester or cellulose nitrate with 0.45 µm pores and 47 mm diameter. As Legionella are lightly coloured, black membranes are preferred for easier visibility with higher contrast.

We offer:

• Black Cellulose Nitrate Membrane 0.45 µm, sterile, 47 mm diameter, with grid, 100 pcs. (NCS04547NC)• Black Mixed Cellulose Ester 0.45 µm, sterile, 47 mm diameter, with grid, 100 pcs. (MCES04547NC)

• White Cellulose Nitrate Membrane 0.45 µm, sterile, 47 mm diameter, with grid, 100 pcs. (NCS04547BC)• White Mixed Cellulose Ester 0.45 µm, sterile, 47 mm diameter, with grid, 100 pcs. (MCES04547BC)

A high frequency of samples can be handled more efficiently by using sterile monitors with the required membrane type and a cellulose pad underneath. These monitors are connected to a manifold filtration unit by a small adapter. After the filtration step the funnel can be removed, thus the remaining lid and base fit to a Petri dish, which covers the membran and the absorptive pad. You just apply the microbiological media and incubate the dish. There is no transfer of the membrane to the Agar-plate needed. The monitors can easily be adapted to a manifold filter holder.

• Monitor with black Cellulose Nitrate Membrane 0.45 µm, sterile, 47 mm diameter, with grid, 100 ml, 50 pcs. (ENCS04547NC)

• Monitor with white Cellulose Nitrate Membrane 0.45 µm, sterile, 47 mm diameter, with grid, 100 ml, 50 pcs. (ENCS04547BC)

If Legionella have to be collected out of a large volume with a low concentration and be transferred for further investigation, the choice of a Polycarbonate membrane with 0.40 µm pore size is recommended. Due to its very smooth and shiny surface the bacteria can be removed much easier than from common membrane types. In addition Polycarbonate membranes enable a microscopic analysis directly on the membrane. For this issue a transparent version is available.

• PC04047TP 0.40 µm, transparent, 47 mm, non-sterile, 100 pcs.• PC04047TL 0.40 µm, translucent, 47 mm, non-sterile, 100 pcs.

For the sterile filtration of the applied nutrient media we offer various types of membranes and syringe filters:

• Cellulose acetate membrane 0.2 µm, 47 mm diameter, non-sterile, 100 pcs. (AC02047BL)• Polyethersulfone membrane 0.2 µm, 47 mm diameter, non-sterile, 100 pcs. (PES02047BL)• Syringe filter with cellulose acetate 0.2 µm, 25 mm diameter, sterile, 50 pcs. (SACS0202550)• Syringe filter with cellulose acetate 0.2 µm, 30 mm diameter, sterile, 50 pcs. (SACS0203050)

Other pore sizes, diameters, designs and packing sizes are available on request.

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