18 Since 1922: Our experience is your success

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Paul Marienfeld GmbH & Co. KG Your advantages Our company was founded in 1922 by Paul Marienfeld and since that date the company is owned by the Marienfeld family. Today we supply our products from Germany to more than 100 countries worldwide. Since 1922: Our experience is your success Modern production technologies are combined with the knowledge and expertise of more than 95 years of experience. The results are high quality products. Our comprehensive range of quality laboratory glassware like microscope slides, cover glass, counting chambers, capillary tubes, laboratory containers and volumetric...

Family business in fourth generation Since our modest beginnings in Thuringia’s Geraberg we have continually grown and developed: Out of a small glass grinding production to an internationally operating company. After decades of growth the area for our further company’s expansion became insufficient. In the year 2000, we built our new factory in Lauda-Koenigshofen which is approx. 40 km south of Wuerzburg. Here we dispose about sufficient space for further growth and are well prepared for the challenges and opportunities of the future. After the Second World War, Paul Marienfeld set up the production...

Interesting facts This represents the packaging unit. Please take this into consideration by ordering complete units or a multiple of these. In general, this “unit” is the minimum order quantity also. Deviations are indicated in the product descriptions and the price-list. If ”unit” is not indicated the packaging is not specified. On labels and/or packaging: manufacturer, company responsible for placing on market disposable item, for single use only glass, fragile to be protected against humidity In general, this “unit” is the minimum order quantity also. Deviations are indicated in the product...

Technical information plastics Technical information glass Abbreviations of the described plastics acc. to DIN 7728 This glass is used for microscope slides for its surfaces' properties. Due to his high linear coefficient of expansion it does not withstand thermal shocks. Soda lime glass This glass is highly resistant against acids and alkali and perfectly suitable for microscope cover glasses. Due to his high linear coefficient of expansion it does not withstand thermal shocks. This glass is more resistant to variations of temperature than soda lime glass and D 263 ® M. This glass is perfectly...

Microscopy & accessories Blood testing Volumetric instruments Laboratory containers Laboratory equipment Liquid handling General terms and conditions

Microscopy & accessories List of contents page Cover glass forceps Cover glasses, for counting chambers Cover glasses, ounce packing Cover glasses, hydrophobic Cover glasses, high precision No. 1.5H Cover glasses, thickness No. 0, 1.5, 2 Cover slip lifters Dispensers & racks for micro slides Drying benches for micro slides Embedding cassettes Histofluid mounting medium Information on cover glass D 263 M Information on microscope slides Inoculation loops Laboratory markers Mailing containers for pathology Microflocculation plates Microscope slides Microscope slides, adhesion Microscope slides,...

Microscopy & accessories Microscopy & accessories D 263® M Cover glass for microscopy D 263® M is a clear borosilicate glass produced by a downdraw method. This permits the production of very thin glass thicknesses between 0.10 and 0.21 mm. D 263® M is used as a cover glass for microscopic analyses and complies to all requirements of DIN ISO 8255-1. Its low autofluorescence and high chemical resistance are preconditions for reliable research results. Due to the protective coating and outstanding quality of material it is easily separable and, therefore, well-suited for automated cover slipping...

Microscopy & accessories Microscopy & accessories Cover glasses thickness No. 1 Cover glasses thickness No. 1 circular Marienfeld Superior cover glasses feature an excellent flatness and smooth surfaces thanks to the best material. No cover glasses made of soda lime glass match the quality of our borosilicate glass coverslips. Even when archived for years preparations keep their optical quality thanks to our noncorroding glass and the particularly low tolerance of the material thickness. Our precise machining processes make sure that our coverslips have the exact size and their edges are cut...

Microscopy & accessories Precision cover glasses thickness No. 1.5H (Tol. ± 5 µm) for high performance microscopes Modern high-performance microscope objectives are designed to be used with cover glasses of a thickness of 170 µm. The quality of the cover glass, in particular the compliance with the nominal thickness, has thereby a crucial impact on the imaging quality. Variations of thickness reduce the image contrast and result in image defects, most notably in spherical aberration. We produce high-precision cover glasses with thickness No. 1.5H featuring an exceptionally accurate thickness...

Microscopy & accessories Cover glasses 0.4 mm for counting chambers and haemacytometers Cover glasses thickness No. 1 in ounce packing •• •• •• •• •• •• Microscopy & accessories made of chemically resistant borosilicate glass D 263® M of first hydrolytic class absolutely colourless, perfectly clear, suitable for fluorescence microscopy in compliance with DIN ISO 8255 thickness No. 1 (0.13 to 0.16 mm) in hinged lid plastic boxes containing 1 ounce or 2 ounces, 10 boxes in a carton for in-vitro diagnostic (IVD) applications according to IVD directive 98/79/EC, with CE - mark and batch number for...

Microscopy & accessories Microscopy & accessories Histofluid mounting medium Histofluid is a water-clear adhesive of acrylic resins dissolved in xylene. It hardens fast and due to its optical properties suits perfectly well for embedding microscopic preparations. Shortly after having covered a preparation it can already be examined and filed. Histofluid may also be used to firmly lock and seal bottle caps. Further advantages are: •• •• •• •• •• •• •• •• •• long storing or temperature changes do not cause fissures or deformations in Histofluid layers does not turn yellowish when being exposed...