Dida, J.J.V., Jusi, A.L.C. and Abella, A.P. 2025. Portable near-infrared transmittance and absorbance measurement device. Proceedings of the Samahang Pisika ng Pilipinas, 43(1), SPP-2025-PC-11. URL: https://proceedings.spp-online.org/article/view/SPP-2025-PC-11.