Journal of Substance Abuse Treatment
Furthermore, better quality chop-chop is often sold in pouches under the pretence that it is legally produced but illegally imported
The last two are Mod series units that combine HEPA particle filtration with activated carbon, for households that also need to capture pollen, pet dander, or wildfire particles
However, attributes like the pitch and tone of the fan noise, efficacy of the automatic air-quality sensors, the ease of cleaning prefilters, and how it looks in a home environment are difficult to gauge from a spec sheet
The thing we didnt expect, however, was that it was also the quietest, and its max of 46 decibels was less overbearing than the max of much smaller units