30 .No sulfur is left on the bottom.
27 .Mix while it is hot to melt sulfur.
31 .Sulfur has melted completely. Sulfur content is 40%.
If you leave it as is, crystals will form when cold.
28 .There are small particles of sulfur on the surface.
Temperature started to drop.
15 minutes passed.
32 . Add second water of 32 L (8.45 gal). Add 28 L (7.4
gal) if first water was 54 L (14.3 gal).
ULC영어본문.qxp_레이아웃 1 2016. 2. 19. 오후 6:45 페이지 274
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33 . For 110 L (29 gal) containers, the solution will fill
up to about 3 cm (1.2 in) below the edge.