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2. Purolator Filters - Wikipedia

   en.wikipedia.org/wiki/Purolator_Filters

   History Foundation and early history A modern Purolator oil filter. The company was founded in 1923 as Motor Improvements, Incorporated in New York City. The company's Purolator (initially stylized PurOlator and sometimes Pur-O-Lator) oil filtration device, invented in 1922 by Ernest John Sweetland and George H. Greenhalgh, was standard equipment on early 1920s Chrysler automobiles after being ...

3. Oil filter - Wikipedia

   en.wikipedia.org/wiki/Oil_filter

   Oil filter. An oil filter is a filter designed to remove contaminants from engine oil, transmission oil, lubricating oil, or hydraulic oil. Their chief use is in internal-combustion engines for motor vehicles (both on- and off-road ), powered aircraft, railway locomotives, ships and boats, and static engines such as generators and pumps.

4. NIOSH air filtration rating - Wikipedia

   en.wikipedia.org/wiki/NIOSH_air_filtration_rating

   P100 filters, under 42 CFR part 84, are the only filters required to be magenta in color. HE (high-efficiency) labeled filters are only provided for powered air-purifying respirators . These HE-marked filters are 99.97% efficient against 0.3 micron particles and are oil-proof, and therefore their filter-media material has the exact same ...

5. Minimum efficiency reporting value - Wikipedia

   en.wikipedia.org/wiki/Minimum_Efficiency...

   Minimum Efficiency Reporting Value, commonly known as MERV, is a measurement scale designed in 1987 by the American Society of Heating, Refrigerating and Air-Conditioning Engineers ( ASHRAE) to report the effectiveness of air filters in more detail than other ratings. For example, often a high-efficiency particulate air ( HEPA) filter is ...

6. High-density polyethylene - Wikipedia

   en.wikipedia.org/wiki/High-density_polyethylene

   HDPE is known for its high strength-to-density ratio. The density of HDPE ranges from 930 to 970 kg/m 3. Although the density of HDPE is only marginally higher than that of low-density polyethylene, HDPE has little branching, giving it stronger intermolecular forces and tensile strength (38 MPa versus 21 MPa) than LDPE.

7. Ultra-low particulate air - Wikipedia

   en.wikipedia.org/wiki/Ultra-low_particulate_air

   A ULPA filter can remove from the air at least 99.999% of dust, pollen, mold, bacteria and any airborne particles with a minimum particle penetration size of 120 nanometres (0.12 μm, ultrafine particles). A ULPA filter can remove—to a large extent but not 100%—oil smoke, tobacco smoke, rosin smoke, smog, and insecticide dust.