东方网3月25日消息：据《劳动报》报道，记者昨了解到，根据连日来中消协联合上海市消保委等对37批次口罩产品抽检结果显示，从单价0.58元到199元的口罩产品，仅四成有防雾霾功效。一些口罩防护性能与价格不匹配，同类产品同等防护性能，但价格可能相差一倍以上。
记者注意到，结果显示，37款口罩样品总体防护性能不太理想，不同样品间防护性能指标差异较大，一次性口罩样品一般好于可换滤片式布口罩样品。在口罩与面部贴合性方面，呼吸阻力小的样品(带有呼气阀的样品除外)，可能存在过滤效率偏低或泄漏率偏高的情况。抽检比较试验发现，样品口罩标识混乱。样品规格型号标注各式各样，有标注口罩尺寸的，有生产企业自编型号的；有24款样品标注生产日期；24款样品标注了口罩的有效期，一般标称为三年或五年。其中有12款样品生产日期和有效期都没有找到标注。
比较试验通过测试“过滤效率”来检验不同口罩对颗粒物的过滤效果。但结果显示，口罩的过滤颗粒物效果差别大，不少口罩的价格与过滤效果不符合。如售价29.8元的汤默臣口罩、售价27元的华绣科技口罩与售价24.9元哈雷口罩的过滤效果远不如多款10元以内的产品。而售价为199元一个的“totobobo”可换滤棉式 橡胶 口罩，其过滤功能与售价1元的“保为康”POWE鄄COM新国际防尘口罩的过滤效果相同，比售价1.9元的“爱丽思”一次性立体防尘三层防护pm2.5口罩的过滤功能还要差。
此外，本次比较试验样品中，2款无中文标签样品都是通过互联网购买得到的。大型超市、商场、药店销售的口罩样品质量相对比较可靠。
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