Beschreibung
Thoma counting chamber with double ruling is a precision haemocytometer built to DIN 12847 for reliable microscopic cell and particle enumeration. The chamber incorporates a double grid ruling together with two haemacytometer cover glasses of 0,4 mm thickness, enabling accurate volume-defined counting under bright-field illumination. Its bright-line (hell-linig) pattern improves contrast and readability of the ruled fields. Supplied in a transparent plastic box that protects the glass surfaces during storage and transport, the unit carries CE marking. This counting chamber from manufacturer Witeg is intended for routine laboratory use in haematology, cell culture, microbiology and related disciplines where standardised Thoma geometry is required. The double ruling layout supports efficient counting of erythrocytes, leukocytes or other suspended particles while maintaining the dimensional tolerances specified by DIN 12847. Compact single-piece packaging keeps the chamber and its matching cover glasses together for immediate readiness at the microscope.
This article is part of Counting chambers & haemocytometers, in Microscopy & histology.
Key features
- Pack size: 1 pc
- Type: Thoma counting chamber
- Ruling: Double grid
- Standard: DIN 12847
- Cover glasses: 2 haemacytometer, 0,4 mm
- Line style: Bright-line
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Questions about COUNTING CHAMBERS THOMA
What is this article?
COUNTING CHAMBERS THOMA is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Counting chambers & haemocytometers, inside Microscopy & histology, in Präzisionsinstrumente.
A counting chamber is a slide with a ruled grid of known depth, so cells in a volume can be counted under a microscope. A haemocytometer is that chamber for blood or for cultured cells. The depth and the ruling are the specification. A scratched grid miscounts.
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.
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The category is Microscopy & histology. The sub-category is Counting chambers & haemocytometers. The catalogue is Präzisionsinstrumente.
Shelves beside this one are Microscope slides & cover glasses, Microscope objectives, eyepieces & optics, Histology cassettes & moulds, Stereo microscopes, Light & fluorescence microscopes, Histology reagents & consumables, Microscopy accessories, Cold light sources & lighting and Digital & USB microscopes.
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