Filter-based optical measurements of black carbon in air. a constituent of soot. have been determined with a 528 nm light source during the period from 1 June 2005 to 31 May 2009 on samples taken at Godavari in Nepal. Sinhagad in India and Hanimaadhoo in the Maldives. https://safeersappliancers.shop/product-category/aeg-hgb95520ym-5-point-gas-hob-countertop-kitchen-stainless-steel-86cm/