Cover glasses (coverslips)
Cover glasses thickness No. 1
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 with high precision. All of our efficient processes include a stringent, integrated quality control and thus ensure high quality coverslips which do not stick together.
Our coverslips are ready for use and well suited for application in automated coverslippers. All these characteristics result in significant advantages for the user.
- made of chemically resistant borosilicate glass D 263™ M of the 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 boxes made of plastic, 10 boxes in a carton
- approved for in-vitro diagnostic (IVD) applications according to IVD directive 98/79/EC, with CE – mark and batch number for comprehensive information and traceability
Hinged lid boxes containing 200 or 100 pieces:
| Cat. No. | Size |
|---|---|
| 0101052 | 22 x 22 mm |
| 0101062 | 24 x 24 mm |
| 0101092 | 21 x 26 mm |
| 0101102 | 22 x 30 mm |
| 0101112 | 22 x 32 mm |
| 0101122 | 22 x 40 mm |
| 0101142 | 22 x 50 mm |
| 0101152 | 22 x 60 mm |
| 0101172 | 24 x 32 mm |
| 0101182 | 24 x 36 mm |
| 0101192 | 24 x 40 mm |
| 0101202 | 24 x 46 mm |
| 0101212 | 24 x 48 mm |
| 0101222 | 24 x 50 mm |
| 0101232 | 24 x 55 mm |
| 0101242 | 24 x 60 mm |
Two-part boxes containing 100 pieces:
| Cat. No. | Size |
|---|---|
| 0101000 | 12 x 12 mm |
| 0101010 | 15 x 15 mm |
| 0101020 | 16 x 16 mm |
| 0101030 | 18 x 18 mm |
| 0101040 | 20 x 20 mm |
| 0101050 | 22 x 22 mm |
| 0101060 | 24 x 24 mm |
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 of 170 μm ± 5 μm. This new generation of cover glasses are highly recommended for objectives with high numerical aperture and high resolution, for example:
- dry objectives: N.A. > 0.7
- objectives for water immersion: N.A. > 1.0
- objectives for glycerol immersion: N.A. > 1.2
- objectives for oil immersion: N.A. > 1.3
- made of chemically resistant borosilicate glass D 263™ M of the first hydrolytic class
- absolutely colourless, perfectly clear, suitable for fluorescence microscopy
- in compliance with DIN ISO 8255
- thickness No. 1.5H (0.170 mm ± 0.005 mm)
- approved for in-vitro diagnostic (IVD) applications according to IVD directive 98/79/EC, with CE – mark and batch number for comprehensive information and traceability
Hinged lid boxes containing 200 or 100 pieces Minimum quantity is 2000 pieces per size and order.:
| Cat. No. | Size |
|---|---|
| 0107032 | 18 x 18 mm |
| 0107052 | 22 x 22 mm |
| 0107222 | 24 x 50 mm |
| 0107242 | 24 x 60 mm |
Two-part boxes containing 100 pieces Minimum quantity is 1000 pieces per order.:
| Cat. No. | Size |
|---|---|
| 0117500 | 10 mm Ø |
| 0117520 | 12 mm Ø |
| 0117530 | 13 mm Ø |
| 0117580 | 18 mm Ø |
| 0117640 | 24 mm Ø |
| 0117650 | 25 mm Ø |
Cover glasses 0.4 mm for counting chambers and haemacytometers
Haemacytometer cover glasses are used to cover specimens in counting chambers. The haemacytometer cover glass is placed on the outer bearings’ surfaces and due to their flatness adheres very well. Thus it forms an exact capillary gap and defines the volume of the cell suspension over the counting grid. On our website you will find more detailed information under the keyword counting chambers. Additonal feature: The excellent quality of their edges make our haemacytometer cover glasses well suitable for blood smears.
- made of special optical glass
- ready for use
- ground and polished edges
- individually packed in poly bags, 10 pieces in a plastic box, 10 plastic boxes in a cardboard box
Approved for in-vitro diagnostic (IVD) applications according to IVD directive 98/79/EC, with CE-mark and batch number for comprehensive information and traceability:
Made of nickel-plated steel, bent shapeCat. No. Size 0350000 20 x 26 mm 0351000 22 x 22 mm 0352000 24 x 24 mm 
Cover glass forceps according to KuehneCat. No. Length 6633002 105 mm