Word: pliofilm
(lookup in dictionary)
(lookup stats)
Dates: during 1940-1949
Sort By: most recent first
(reverse)
...packaging, bags of silica gel are enclosed with the packed object in a vapor-proof wrapping like Pliofilm or reinforced Cellophane. To show whether the air inside is keeping dry enough, the silica gel is impregnated with cobalt chloride, which turns pink if humidity rises above 30%-the point at which metal begins to rust. After unwrapping, silica gel can be dried and used again...
| 1 |