such as navigation instruments, electronic communication equipment, etc., it is necessary to choose a high-precision filter. For example, for some high-precision electronic sensors, a filter that can filter out salt spray particles smaller than 1 micron in size, such as a glass...
The engine’s cubic inch displacement and RPM at peak horsepower are required to determine filter size. Knowing those figures, use this formula to determine the minimum effective filtering area an engine requires. A represents the effective filtering area, the usable portion of the filter: A = (...
A properly designed and effective air purifier gets rid of dust by actually drawing them into itself, then filtering before releasing back into the atmosphere. In part, how dense the filter is would determine and limit the amount and size of particles passing through. These filters could be den...
According to NIOSH (the US National Institute for Occupational Safety and Health), a true HEPA filter is one that can trap 99.97 percent of dust particles that are 0.3 microns in diameter (where a micron is one millionth of a meter). There's nothing particularly significant about particles ...
There are three aerosols generally used in HEPA filter testing, and they are: Cold aerosols: These aerosols are largely a product of necessity, being made at the location of testing. The problem with cold aerosols is that it’s difficult to determine how many particulates reach the HEPA level...
The term biofilm was first used in 1975 from the visualisation of biofilms in a trickling wastewater filter and it described the microbial community that adheres to both abiotic and biotic surfaces [1]. Microbial biofilms are the most prevalent form of natural ecosystems [2,3] and often compose...
Quick overview: You first mix the weed and dry ice vigorously in a bucket, then pour the mixture into specialized bubble bags (the bottom has a filter/screen to let trichomes through), and lastly shake out the hash onto the surface below. Why dry ice? It is so cold it freezes the tri...
How to measure the light plants need to absorb in the grow tent? To measure the light plants need to absorb in the grow tent, determine thePPFD. To measure the light intensity, use a PAR Meter. A PAR Meter measures light intensity within the 400-700 nm range, representing the light pla...
For some professional contractors who use the sanders more often, then prefer to attach the wall sander to a vacuum cleaner. Oboviously the vacuum cleaner has much more power to suck the dust, and the HEPA filter make the dust cleaning easier and faster. ...
while ISO 1 is the most stringently controlled air cleanliness standard. Your industry and the purpose of the cleanroom determine which classification of cleanroom you’ll maintain. Particles are categorized by their size in terms of microns. A micron, also called a micrometer and...