Humidity Indicator Cards 35mm Film acid-free and lignin-free
$34.50
Description
acid-free and lignin-free
non-adhesive strip can also be used to hold rare books open for exhibition while allowing the text to be read
Internal dimensions (L x W x D): 235 x 156 x 50mm
Mylar film is a chemically inert crystal clear transparent acid-free
Enclosure size: 338 x 498mm
Humidity Indicator Cards 35mm Film acid-free and lignin-freeThese Humidity Indicator scales are designed for monitoring the humidity levels in and around museum cases, artifacts, collectibles, and other storage areas. As humidity changes, the chemically impregnated colours change from blue (more humid) to pink (less humid). The humidity card indicates the current humidity level by reading to the lavender section (in between a pink and blue section). Specs 110mm x 40mm Cards Reads 10% 100% RH levels Pack of 5
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