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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
|0336000||spare cover glass approx. 60 x 30 x 1 mm||1|
|0611300||precision type made of glass
with chromium deposited for phase contrast use
with ground and chamfered edges
|0611400||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.
|0336000||spare cover glass approx. 60x30x1 mm||1|
|0611500||chamber made of glass without grid, with cover glass||1|