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| View Original: | THC_2003.902.096_E._D._Crittenden_Catalyst_Testing.tif (2556x2083) | |||
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| Keywords: THC 2003.902.096 E. D. Crittenden Catalyst Testing.tif Photograph unknown en E D Crittenden demonstrating catalyst testing at pressures of 1 to 100 atmospheres pressure The reaction bombs in the cans are water cooled and the automatic pressure-regulating valve gas sampling and measuring devices are also shown depicted people E D Crittenden depicted place Fixed Nitrogen Research Laboratory 1926-04 Print Photographic Original Negative in 7 5 6 Institution Chemical Heritage Foundation object history Travis Hignett Collection The images are from the United States Department of Agriculture U S D A Fixed Nitrogen Research Laboratory F N R L and date from the 1920s-1950s Many of the images are mounted on scrapbook pages and were originally in scrapbook albums exhibition history credit line Gift of Travis Hignett CHF Collections Image downloaded with permission from the Chemical Heritage Foundation as part of the Wikipedian in Residence initiative accession number 2003 902 096 http //www chemheritage org/discover/collections/collection-items/photographs/e -d -crittenden-demonstrating-catalyst-testing-fixed-nitrogen-research-laboratory-096 aspx Chemical Heritage Foundation CHF-cooperation PD-USGov Images from the Chemical Heritage Foundation Images from the Travis Hignett Collection Fixed Nitrogen Research Laboratory Chemists Laboratories in the United States Catalysts Scientific instruments | ||||