We present a fast method to monitor hydrogen sulfide (H2S) in ambient air based on a visible color change. Therefore. an immobilized copper(II) complex of the azo dye 1-(2-pyridylazo)-2-naphtol (H-PAN) was synthesized and prepared in a matrix for screen printing. Different materials. https://www.bekindtopets.com/hot-price-NHL-Winnipeg-Jets-Black-Text-iPhone-14-Plus-Impact-Case-p32203-hot-buy/