HEPA, or High-Efficiency Particulate Air, grading is the measurement standard for air filtering. HEPA filters are often used in medical settings to minimise the risk of spreading airborne viruses and bacteria. Usually, medical-grade HEPA filters are used in conjunction with anti-microbial UV (ultraviolet) filters that eliminate bacteria and viruses caught by the HEPA filter. HEPA filters are also commonly used in high-quality vacuum cleaners for the same purposes, trapping finer particles instead of kicking them into the air. There are plenty of air purifier solutions that claim to have HEPA-graded filtering. However, since there is no regulatory authority that monitors the claims made by air purifier manufacturers. This makes buying an efficient air purifier difficult as many domestic solutions use “HEPA-like” filters that don’t adhere to the medical grading system. Others claim to use HEPA grade filtering but fail to offer more crucial information, like the filtering efficiency and coverage. Others simply don’t offer any kind of pre-filtering for larger particles such as smoke.