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Title:MUSTARD DROPS APPLIED TO OBSERVERS' ARMS [Allocated Title]
Film Number:DED 65
Other titles:PORTON DOWN TRIALS NON-NITRATE COLLECTION [Allocated Series Title]
Summary: 0-100 A. Mustard drop applied to arms of ten observers. Drop applied, swabbed, then rubbed with bleach on each of their arms. Applications made in the Hot Chamber.
100-200 B. Appearance of arms after 24 hours showing blistering in each case.