The Palmer Nanoplankton Counting Chamber is of all glass construction. A shallow glass cell, 17.9 mm diameter x 0.4 mm deep, is cut from plane glass plate and fused to a 75 x 25 mm polished glass slide. Easy charging provided by two channels, 2 mm x 5 mm. Forms flat bottom chamber of approximately 0.1 ml capacity. This instrument is for counting smaller plankters, using 43x dry objectives of approximately 0.65 n.a. and 4 mm e.f. The plane cover glass is 22 x 22 mm and 0.16 to 0.19mm thick.
Canadian Owned