Santoso, M.A., Machfudz, A. and Akhirunnisa, R. 2026. Determination of the HK Value (Purity Value) of D2 Sugar After the First Cooking Process of Sulfurized Thick Nira at PG Candi Baru: Penentuan Nilai HK (Harkat Kemurnian) Pada Gula D2 Setelah Proses Pemasakan Pertama Nira Kental Tersulfitir di PG Candi Baru. Indonesian Journal of Innovation Studies. 25, 4 (Oct. 2026), 10.21070/ijins.v25i4.2387. DOI:https://doi.org/10.21070/ijins.v25i4.2387.