Table 1.

25% UAR + Sato’s Pb Staining Procedure.

Step	Time	Reagent/Solution
1	30 seconds	Distilled water
2	30 minutes	25% UAR in distilled water, 0.2 μm filtered
3	1 minute	Distilled water
4	1 minute	Distilled water
5	1 minute	Distilled water
6	1 minute	Distilled water
7	1 minute	Distilled water
8	5 minutes	Sato’s Pb Stain, 0.2 μm filtered
9	1 minute	Distilled water
10	1 minute	Distilled water
11	1 minute	Distilled water
12	1 minute	Distilled water
13	1 minute	Distilled water
14	1 minute	Distilled water
15		Remove grid plate and wick off excess water drops with lens paper