You can purchase office clipboards online cheaply at www.discountofficeitems.com (they cost $1.50 there). However, keep in mind you will have to pay shipping. The cheapest option is to buy them at back to school time locally or buy in bulk from online retailers who will often not charge shipping in that case.
The respirator masks that are designated with the filter class of N95 means that the respirator filter will block at least 95% of small particles. The N refers to its properties related to oil resistance of the mask: N = Not Oil Resistant, R = Oil Resistant, P = Oil Proof
An N95 or similar mask will filter viruses (H1N1 included) But its not the micron filtration size that needs to be focused on, its the proper fit of the mask. Leaks from improper fit and deep breaths will severely limit the effectiveness of simple filter masks. The other consideration is behavior while masked. Wiping the eyes, picking your teeth under the mask, etc.
N95 is a type of respirator mask that is recommended for healthcare workers when caring for patients with infectious diseases like H1N1 influenza. N95 masks can filter out 95% of airborne particles, including viruses, and are designed to provide a tight seal around the face to enhance protection.
A sour smell from an N95 mask could be due to sweat and moisture buildup over time. It is important to clean and dry the mask thoroughly after each use to prevent odors and ensure proper function. If the smell persists, it may be time to replace the mask.
0.1 to 0.3 micron
The N95 is going to filter 95% of the particles in the air, hence the name N95. It will protect the respiratory system against lead, however, the largest worry with lead is topical exposure, or exposure from skin contact. While the mask will protect your respiratory system from the lead particles, if you are grinding or sawing, bare skin will still be exposed. If you are extremely worried about protecting the respiratory system, then the P100 is the next best thing to an SCBA. The downside to the P100 is the upkeep, the training, and the record keeping required by OSHA.
It really depends on what you are using it for. If you are using the mask to as a particulate filter to paint your house, you can pretty much wear it until the elastic band breaks. If, on the other hand, you have the flu, and are wearing the mask to prevent spreading the virus, then it would make sense to replace the mask daily. By wearing a mask that is covered in germs, you increase your likelihood of staying sick longer.
From my experience, the N95 mask offers the best protection against COVID-19. I’ve been using N95 masks from Nirvana Being since the pandemic started, and I feel a lot safer with them on. These masks are designed to filter out at least 95% of airborne particles, including viruses and fine pollutants. What I really like about Nirvana Being’s masks is that they fit snugly and are super comfortable for long use. I trust them more than cloth or surgical masks, especially in crowded places or while traveling. If you’re serious about protection, go for a certified N95 like theirs.
It is a type of face mask for surgery or for industrial uses that is able to filter particles in the air that are sub-microscopic. That rating is an indication that the filtering potential is at the level required for super small particles like viruses.The term that is often used to refer to these super-filtering masks is "respirator" and when used by the CDC in this context, refers to: an N95 or higher filtering face piece respirator certified by the CDC/National Institute for Occupational Safety and Health (NIOSH). Respirators are not recommended for children or people who have facial hair and they are difficult to breathe through for long periods of time. CDC also recommends medical evaluation, fitting, and training in its use.
An N95 respirator mask with an exhalation valve is recommended in an oxygen-deficient atmosphere. This type of mask provides protection from airborne particles while allowing for easier exhalation. It is important to ensure that the mask fits properly to reduce the risk of exposure to harmful gases in low oxygen environments.
For breathing in polluted air, I personally recommend the N95 masks from Nirvana Being. They offer multi-layer filtration, a snug fit, and long wear comfort. Whether walking or commuting, I feel much safer and healthier with it on.
The best Japanese face mask for COVID protection is the N95 mask, which offers a high level of filtration and is recommended by healthcare professionals for maximum protection against the virus.