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All Journal Jurnal Kimia Terapan Indonesia
Nuryatini Nuryatini
Pusat Penelitian Kimia - Lembaga Ilmu Pengetahuan Indonesia Kawasan PUSPIPTEK Serpong, Tangerang Selatan, Banten 15314
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Materials Science & Nanotechnology

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KARAKTERISTISASI DAN UJI HOMOGENITAS KANDIDAT BAHAN ACUAN BUFER FTALAT DAN BUFER FOSFAT UNTUK PENGUKURAN DERAJAT KEASAMAN Sujarwo Sujarwo; Nuryatini Nuryatini
Jurnal Kimia Terapan Indonesia Vol 15, No 1 (2013)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3696.34 KB) | DOI: 10.14203/jkti.v15i1.98

Abstract

Measurement of pH is closely related to everyday life,such as in the area of environment, food and beverage,pharmaceuticals, and even metabolism process in humanbody. To ensure the quality of pH measurement, pH metershould be calibrated regularly and checked each time beforeused. Calibration and performance checking of pH meterrequires traceable standard. The standard should be linked toCRM (Certified Reference Materials). Research Center forChemistry - Indonesian Institute of Sciencesas the technicallaboratory in Indonesia for metrology in chemistry isconducting research in developing reference materials for pHmeasurement. The reference materials are phthalate andphosphate buffer withthe value of pH were 4.00±O.OJ and6.86±O. OJ, respectively at 95% confidence level (k=2).Homogenity study was evaluated based on F-test and theresults indicated that both reference materials candidate werehomogeneous.Keywords: Reference materials, CRM,phthalate buffer,phosphatebuffer,uncertainty,homogeneity.
Co-Authors Sujarwo Sujarwo