لام سدویک رافتر مخصوص شمارش میکرو ارگانیزمها و جلبکها در آب و فاضلاب، یا شمارش ریسه ها در رب می باشند.
S52 – Glass Sedgewick Rafter Counting Chamber
Description
A serious reusable tool for the professional user. The cell is made of high quality optical glass with a chromium surface image. It is intended for continued professional use and whenever using phase contrast.
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Important Note. Lugols, the compound that is often used in these analyses, is very aggressive. It is best to keep the time that lugols spends in the chamber to a minimum and then it should be washed out promptly and thoroughly using normal laboratory soap solutions. Do not use heat in the analysis or drying process
Counting chambers Sedgewick Rafter
- the cell of 50 x 20 x 1 mm (= 1 cm³) is ruled in a 1 mm grid subdividing 1 ml in 1000 μl
- supplied with cover glass approx. 60 x 30 x 1 mm
| Cat. No. | – | Unit |
|---|---|---|
| 9.903.200 | spare cover glass approx. 60 x 30 x 1 mm | 1 |
| 9.900.200 | precision type made of glass with chromium deposited for phase contrast use with ground and chamfered edges |
1 |
| 9.902.200 | single type made of plastic | 1 |
For many applications, particularly for some APHA methods and where larger plankton are being analysed, there is no requirement for a counting grid printed onto the slide. This is where the Sedgewick Rafter counting chamber with the plain glass base is deployed.
This chamber is suitable for either upright or inverted microscopes. It can be used in conjunction with an eyepiece reticle, such as the Whippie micrometer disc.
| Cat. No. | – | Unit |
|---|---|---|
| 9.903.200 | spare cover glass approx. 60x30x1 m | 1 |
| 9.906.200 | chamber made of glass without grid, with cover glass | 1 |
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