Assertion: benzoic acid's purity | /r/HasProperty | determined by gas chromatography
Facets:
Source sentences:
text: The purity of the product, as determined by gas chromatography (the same adsorbent as in Example 1) was 99.8%.
text: The purity of the samples used for vapor pressure measurements was determined by gas chromatography using Hewlett-Packard 4890 gas chromatograph equipped with a column HP5 cross-linked 5 % PH ME Siloxane, length 30 m, film thickness 0.25 μm, 0.32 mm i.d., and FID detector.