Description
Cover glasses for Howard counting chambers provide a thin, precision glass surface for microscopic counting applications. Measuring 25 × 40 × 0,4 mm, each cover is equipped with a vapour-deposited chrome mask that serves as a counting aid and contains a 5 × 5 array of recesses 1,382 mm in diameter. The chrome mask delivers sharp contrast and durable reference openings for reliable particle or cell enumeration. These covers from manufacturer Marienfeld are supplied individually packed to protect the delicate surface and mask until use. They are designed for Howard-type counting chambers commonly employed in food control, quality assurance and microbiological laboratories. The slim 0,4 mm thickness supports close working distances under the microscope while the defined mask geometry ensures consistent counting fields. Optical clarity of the glass combined with the robust chrome layer makes the covers suitable for repeated routine examinations requiring accurate visual guidance.
This article is part of Microscope slides & cover glasses, in Microscopy & histology.
Key features
- Pack size: 1 pc
- Dimensions: 25 × 40 × 0,4 mm
- Counting mask: vapour-deposited chrome
- Recesses: 5 × 5 of 1,382 mm diameter
- Function: counting aid for Howard chambers
- EAN: 4250317300799
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Questions about Cover glasses for Howard counting chambers
What is this article?
Cover glasses for Howard counting chambers is the article on this page. Luminix Health distributes Marienfeld for laboratory use. It sits in Microscope slides & cover glasses, inside Microscopy & histology, in Lab instruments.
A slide is the glass a specimen sits on. A cover glass is the thin sheet over it, of a thickness the objective was designed for. A cover glass of the wrong thickness softens the image. Charged and plain slides hold sections differently.
A light microscope forms an image with glass lenses and transmitted or reflected light. A stereo microscope is the lower-magnification instrument for dissecting and for looking at a surface. Fluorescence needs a light source and filters matched to the dye. Histology is the preparation that makes a tissue readable: fixation, a cassette, a section, a stain. The objective's magnification and numerical aperture decide the resolution. The slide and the cover glass decide whether the section sits in the focal plane. Stains and dyes as substances are identified on PubChem. Papers on the methods are on PubMed.
Which category should I open next?
The category is Microscopy & histology. The sub-category is Microscope slides & cover glasses. The catalogue is Lab instruments.
Shelves beside this one are Microscope objectives, eyepieces & optics, Histology cassettes & moulds, Counting chambers & haemocytometers, Stereo microscopes, Light & fluorescence microscopes, Histology reagents & consumables, Microscopy accessories, Cold light sources & lighting and Digital & USB microscopes.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.