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Main.DESICCANTS.SilicaGel.Moisture Indicator Contg SilicaGel.Moisture Color Indicator SilicaGel.Non-Co Indicator Contg SilicaGel.Co.: UK. I.Patent.Claims Etc.Claim 1: Humidity Indicator Compris.ing: SilicaGel Carrier Impregnated.with Active Indicator consisting:.Iron(II) &/or Iron(III) Salt; Salt.Contg > 1 Cation One of Which is.Fe(II) or Fe(III). Claim 2: Upon.Exposure to a Humid Environment.; Indicator Undergoes Color Change.& whereinafter Indicator may be.ReGenerated for Re-Use. Claim 3:.Ammonium Iron(III) Sulphate;.Ammonium Iron(II) Sulphate or.Potassium Iron(III) Sulphate..Patent Assignee
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64095
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UK. I
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