Six various samples of potassium bromide are,,investigated as potential
reference substances in IR-spectrometry for Croatian pharmacopoeia: KBr for
IR-spectrometry, Merck (1); KBr for IR-spectrometry, Fluka (2); KBr purris p.a. ACS,
Fluka (3); KBr purum p.a. Ph. Eur., Fluka (4); KBr, WEB (5) and KBr, Zorka Šabac
(6). Critical attributive and meiisurement characteristics are established for the field
of high-accuracy IR-spectrometry.
Selection criteria of a material as standard reference material and steps for certification
are described. On the basis of general properties, a certain number of candidate
materials is selected as suitable to fulfill the required need. Measurement characteristics
of all determinated samples show that samples 1-3 are suitable as substances for
making standard of potassium bromide for IR-spectrometry pharmacopoeia measurements
