Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Content or effect of a constituent of a liquid mixture
Patent
1985-07-31
1987-06-23
Levy, Stewart J.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Content or effect of a constituent of a liquid mixture
364497, 422 70, G01N 3088
Patent
active
046743235
ABSTRACT:
A SEC/GPC chromatograph which includes columns for fractionating polymers samples by molecular weight, conveying apparatus for causing a stream of solvent to flow through the columns from a source of this solvent, a rotary injection valve for sequentially injecting a series of polymer samples into the solvent stream ahead of the columns, a detector for generating a peak signal indicative of the molecular weight of the fractionated polymer samples eluting from the columns and a computer controller for processing the peak signal from the detector into a molecular weight distribution output, and for controlling the valve, and for performing several self-diagnostic tests.
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North Edwin R.
Rulf Donald C.
Levy Stewart J.
Roskos Joseph W.
The Dow Chemical Company
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