An interlaboratory photometric compariso
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G.W. Middlekauff; J.F. Skogland
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Article
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1916
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Elsevier Science
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English
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## 85I ture was raised or the time of heating extended. In other words, an oil which had a low carbonization value if heated to 250 ยฐ for two or three hours, and an oil showing a somewhat higher value under the same conditions, will be further and further apart as the conditions become more strenu