N95 Respirator Basics


N95 respirators are part of a family of respirators which filter airborne hazards. The letter N means the respirator does not filter oil. The 95 indicates the percentage of particulates it can filter. N99 and N100 filters are similar, but remove higher percentages of particulates. Those designated R are partially resistant to oil. Respirators with the letter P are fully resistant to oil. HE respirators are High Efficiency. NIOSH is the government agency which rates …

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Respirator Safety Basics


Respirator safety increases if you know the basics. Here we talk about both types, air purifying and atmosphere supplying. Respirators don’t filter out everything. Some are designed for dust, others chemicals, still others for biological agents. Air purifying respirators come in three subcategories. Some are disposable or reusable. Others are powered and push breathable air to the user. Atmosphere supplying respirators are used in facilities with impossibly bad industrial hygiene. The supply air through a …

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Silica Dust Dangers


Silica dust is common in worksites, can scar the lungs and cause cancer. Symptoms sometimes don’t appear for 10 years. The source of silica dust is the element silicon, which is common in quartz and other rocks. The rocks themselves aren’t a danger, but when crunched into dust, scarred lungs and cancer can result from silicosis. Workers sandblasting, tunneling, or using concrete or mortar are at risk. Silicosis may take up to 10 years to …

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