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US09134251B2 Porous chemical indicator for gaseous media 有权
气体介质的多孔化学指示剂

Porous chemical indicator for gaseous media
摘要:
Chemical indicators for acidic or basic gases include an inert, porous substrate, an indicator dye or mixture of dyes contained within at least some of the pores of the inert, porous substrate, and an inert adhesive layer attached to the inert, porous substrate. The porous substrate may be a microporous substrate.
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