Khwan-On S, Yaba A, Muhamud P. Development and method validation for testing formaldehyde in resin. KSU-Journal Sci Tech & Innov. [internet]. 2026 Jul. 22 [cited 2026 Sep. 16];5(2):51-67. available from: https://li01.tci-thaijo.org/index.php/sci_01/article/view/271724