Yenuthok, Aekgphoonnada, Tharinee Saleepochn, Saijai Charnsethikul, Thitilapa Sae-Heng, and Pongsak Lowmunkhong. “Smartphone-based portable device for multi-sample colorimetric determination of nitrite in sausage”. Agriculture and Natural Resources 59, no. 4 (August 21, 2025): 590405. accessed August 27, 2026. https://li01.tci-thaijo.org/index.php/anres/article/view/268621.