The Growth of Monoraphidium sp. and Scenedesmus sp. Cells in the Presence of Thorium

Table 1

Commercial cell-counting chambers [9].

Counting chamber	Cell size (μm)	Culture density (cells/mL)
Sedgwick-Rafter	50–500	30–10^4
Palmer-Maloney	5–150	10^2–10^5
Speirs-Levy	5–75	10^4–10^6
Fuchs-Rosenthal	5–75	10^4–10^6
Neubauer	2–30	10^4–10^7
Petroff-Hausser	<1–5	10^6–10^8