Figure 4
From: Starch vs. tannin as biodegradable reagents for ultrafine hematite depression

Turbidity tests by the mixture of starch and tannin with (a) hematite and (b) quartz.
From: Starch vs. tannin as biodegradable reagents for ultrafine hematite depression

Turbidity tests by the mixture of starch and tannin with (a) hematite and (b) quartz.