Superseded90% confidenceDecision RuleTime unknown
硅胶干燥剂可反复烘干再生（120℃烘烤2-3小时或微波加热），变色硅胶（蓝变粉/橙变绿）能直观判断饱和状态，适合镜头、相机、乐器等需要精准低湿的防护
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Long-term
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-
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This knowledge claim has been superseded by newer content
硅胶干燥剂可在120~150℃烘烤2~3小时后重复使用，变色硅胶（蓝变粉或橙变绿）能直观判断饱和；氯化钙型吸湿后液化无法再生，属一次性消耗品Sources
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