Express HEPA Filter (Part# 730200)

£23.75

Model Number	MPC 1214009
In Stock	Yes

Product Description

"HEPA" is an acronym for "high efficiency particulate air"
HEPA cartridge, 1 quart (99.97% efficient @ .3 micron) Clean & Efficient - Quick Filter Change suitable for Express vacuums
HEPA filters are composed of a mat of randomly arranged fibres. Key metrics affecting function are fibre density and diameter, and filter thickness. The air space between HEPA filter fibres is much greater than 0.3 μm. The common assumption that a HEPA filter acts like a sieve where particles smaller than the largest opening can pass through is incorrect. Just as for membrane filters, particles so large that they are as wide as the largest opening or distance between fibres can not pass in between them at all. But HEPA filters are designed to target much smaller pollutants and particles are mainly trapped (they stick to a fibre)
HEPA filters are beneficial for asthma and allergies sufferers, because the HEPA filter traps the fine particles (such as pollen and dust mite feces) which trigger allergy and asthma symptons. However, for a HEPA filter in a vacuum cleaner to be effective, the vacuum cleaner must be designed so that all the air drawn into the machine is expelled through the filter, with none of the air leaking past it. Also, because of the extra density of a HEPA filter, the vacuum cleaner's motor needs to be more powerful to overcome the extra air resistance of the filter while still providing adequate cleaning power. HEPA cartridge, 1 quart (99.97% efficient @ .3 micron) (Part# 730200)

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