As you prepare these pages you need to allow open space for recording observations - colors, temperatures, gas evolution, etc. - and the recording of necessary data - melting/boiling points, gas chromatography parameters, etc.
(you; prepare; these pages) (you; need; to allow open space for recording observations) Context(you need,List([27, 35))):(you; need to allow; open space for recording observations)
you need,List([27, 35))
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