id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
work_6aflx4xxqbfr7mp2hr2bxxxice	Andrew Mills	A Colourimetric Vacuum Air Pressure Indicator	2019.0	15	.pdf	application/pdf	4558	304	57	A colourimetric vacuum air pressure indicator is described, based on the very low level of example of an ink‐based, inexpensive vacuum air pressure indicator. Keywords: indicator; vacuum, packaging, carbon dioxide, low pressure, colourimetric colour‐based vacuum air pressure indicator which allows both a: (i) qualitative assessment the first colourimetric vacuum air pressure indicator. the first colourimetric vacuum air pressure indicator. the first colourimetric vacuum air pressure indicator. The absorbance at the max of D‐, i.e. 589 nm, of the OCP dye in the vacuum indicator film, A, the vacuum pressure (monitored using the digital manometer) and indicator colour A measure of the pressure sensitivity of the vacuum indicator is the value of packaged product can be used to provide a measure of the ambient vacuum pressure, P, Fig. 2: (a) Digital photographs of the OCP vacuum indicator in an evacuated chamber with pressure From colour analysis of the digital photograph of the OCP indicator in 	./cache/work_6aflx4xxqbfr7mp2hr2bxxxice.pdf	./txt/work_6aflx4xxqbfr7mp2hr2bxxxice.txt