Table 1. Zinc salt/tannin combinations used in virucidal assays.

Zinc compound	Tannin
Zinc oxide <0.00001M	± PRE 0.05 mg mL-1
Zinc nitrate 0.0005M	± PRE 0.05 mg mL-1
Zinc citrate 0.0005M	± PRE 0.05 mg mL-1
Zinc iodide 0.0005M	± PRE 0.05 mg mL-1
Zinc stearate 0.0005M	± PRE 0.05 mg mL-1
Zinc gluconate 0.0005M	± PRE 0.05 mg mL-1
ZnSO4 0.5M (143.77 mg mL-1)	± PRE 0.05 mg mL-1 or Punicalagin 0.01 mg mL-1
0.1M (28.75 mg mL-1)
0.05M (14.37 mg mL-1)
0.01M (2.88 mg mL-1)
0.005M (1.44 mg mL-1)
0.001M (0.29 mg mL-1)
0.0005M (0.14 mg mL-1)
No addition	PRE 0.05 and 0.01 mg mL-1
No addition	Punicalagin 0.05 and 0.01 mg mL-1 (46.13 and 9.23 μM)
No addition	Ellagic acid 0.3 mg mL-1 (1 mM)