Unverified85% confidenceDecision RuleTime unknown
过滤等级选HEPA H13级（过滤0.3微米颗粒≥99.95%）+ 整机密封设计，才能真正防二次扬尘，仅有HEPA滤芯但机身漏风的机型无效
1
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85%
Confidence
Long-term
Relevance
-
First Seen
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Unverified过滤PM2.5需求应选配H11及以上HEPA滤芯的通风器，同时确认换气量在滤芯状态下仍≥30m³/h/人；仅带初效尼龙网的产品只能挡飞絮杨柳絮，对细颗粒物基本无效89% similarUnverifiedHEPA滤网等级H13可过滤≥99.95%的0.3微米颗粒，H11为95%，是选购HEPA机型时判断过滤效率的关键参数88% similarUnverified空气净化器认准真HEPA H13级别（对0.3微米颗粒过滤效率≥99.95%），H11/H12效率仅95%-99.5%；标注'HEPA type'或'HEPA-like'的为仿制滤材，无国标认证，不建议购买88% similarUnverifiedHEPA滤芯效率标注需认准H13级别（对0.3μm颗粒过滤≥99.97%）而非H11(≥95%)，病毒气溶胶依附于飞沫颗粒，H13对3μm以上飞沫过滤更彻底87% similarUnverified空气净化器HEPA滤网认准H13级别（过滤0.3微米颗粒≥99.97%），H11级仅95%，标注'类HEPA'或'HEPA型'的多为营销话术无认证87% similar
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