- Consists of a shallow glass cell, 17.9 mm diameter x 0.4 deep, provided with two charging channels, 2 mm wide x 5 mm long
For counting smaller plankters, use 43X dry objectives of approximately 0.65 n.a. and 4 mm e.f. See C.M. Palmer and T.E. Maloney. American Society of Limnology and Oceanography Special Publications No. 21.
Cell is cut from plane glass plate and fused to a polished glass slide. 75 mm x 25 mm x 2 mm thick. Forms flat-bottom chamber of approximately 0.1 mL capacity. Furnished with two plane cover glasses, No. 1 1/2, thickness 0.16 to 0.19 mm, 22 mm square. For cover glasses, see 6661K52 eyepiece micrometer disc, see 6585H10.