तस्यारम्भे रागविशेषेषु प्रतिवर्णिकां गृह्णीयात् ॥ कZ_०२.१३.५७ ॥
tasyārambhe rāgaviśeṣeṣu prativarṇikāṃ gṛhṇīyāt
起初,对于每一种特定的着色/染液(rāga-viśeṣa),应取相应的颜色标准(prativarṇikā)作为参照。
It makes the test reproducible across inspectors and locations, reducing discretion and opportunities for collusion or error.