A large collection of ink samples fills storage space at a small laboratory in Washington, D.C. The samples are kept inside a mix of soft, plastic bottles and small glass containers. To the untrained eye, they are just a lot of dark liquids with strange names like “moldy sponge” or “green grass.” But to the United States Secret Service agents who use the ink samples, they could provide information that saves the life of the president. Agents say the samples also could help them stop criminals from reproducing money illegally. The ink library at the laboratory has more than 15,000 samples. They come from writing instruments and printing machines dating back more than 85 years. The collection is the result of one man, Antonio Cantu. He started collecting samples in the 1960s. Cantu was a well-known investigator and former chief chemist at the Secret Service.
Title: US Secret Service Laboratory Studies Ink to Solve Crimes
Content: <div id='article-page'><div id='article-content' data-media-url='//news-app-staging.s3.amazonaws.com' data-base-url='//news-app-staging.herokuapp.com' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3503/ink.wav' data-capture-url='//staging.analytics.lingraphica.com/events/capture_news' data-article-title='US Secret Service Laboratory Studies Ink to Solve Crimes' data-article-id='3983'><script src='//news-app-staging.herokuapp.com/javascripts/getscripts.js'></script><link rel='stylesheet' href='//news-app-staging.herokuapp.com/stylesheets/article.css' type='text/css' /><div class='article'><p><span data-start-time='0' data-end-time='8958'>A large collection of ink samples fills storage space at a small laboratory in Washington, D.C.</span> <span data-start-time='8958' data-end-time='17417'>The samples are kept inside a mix of soft, plastic bottles and small glass containers.</span> <span data-start-time='17417' data-end-time='28479'>To the untrained eye, they are just a lot of dark liquids with strange names like “moldy sponge” or “green grass.”</span> <span data-start-time='28479' data-end-time='39563'>But to the United States Secret Service agents who use the ink samples, they could provide information that saves the life of the president.</span> <span data-start-time='39563' data-end-time='47854'>Agents say the samples also could help them stop criminals from reproducing money illegally.</span> <span data-start-time='47854' data-end-time='55375'>The ink library at the laboratory has more than 15,000 samples.</span> <span data-start-time='55375' data-end-time='63250'>They come from writing instruments and printing machines dating back more than 85 years.</span> <span data-start-time='63250' data-end-time='69438'>The collection is the result of one man, Antonio Cantu.</span> <span data-start-time='69438' data-end-time='74083'>He started collecting samples in the 1960s.</span> <span data-start-time='74083' data-end-time='81063'>Cantu was a well-known investigator and former chief chemist at the Secret Service.</span> </p></div><div class='control-buttons-sticky' style='display:none;'><div class='control-buttons'><button title='Back' class='back' disabled='disabled'></button><button title='Play' class='play' disabled='disabled'></button><button title='Pause' class='pause' style='display:none;'></button><button title='Forward' class='forward' disabled='disabled'></button><button class='finished-reading' style='display:none;'>Done</button></div></div></div><div id='article-media'><div id='media-image'><img src='https://news-app-production.s3.amazonaws.com/articles/3503/ink.jpg'/></div></div><div id='question-content' style='display:none;'><div class='vocabulary_question question-container' data-question-id=13291 data-hint-location='8958' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3503/what_does_sample_mean.wav'>What does sample mean?</div><div class='choices' data-correct-choice='small amount of something'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3503/reproduce_money.wav'><span>reproduce money</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3503/small_amount_of_something.wav'><span>small amount of something</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3503/dark_liquids.wav'><span>dark liquids</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3503/glass_containers.wav'><span>glass containers</span></div></div></div><div class='multiple_choice_question question-container' data-question-id=13292 data-hint-location='28479' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3503/which_agency_uses_the_ink_samples.wav'>Which agency uses the ink samples?</div><div class='choices' data-correct-choice='Secret Service'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3503/local_authorities.wav'><span>local authorities</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3503/secret_service.wav'><span>Secret Service</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3503/federal_bureau_of_investigation.wav'><span>Federal Bureau of Investigation</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3503/central_intelligence_agency.wav'><span>Central Intelligence Agency</span></div></div></div><div class='sentence_completion_question question-container' data-question-id=13293 data-hint-location='55375' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3503/the_samples_come_from_writing_instruments_and__blank_.wav'>The samples come from writing instruments and <span class='blank'>printing machines</span>.</div><div class='choices' data-correct-choice='printing machines'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3503/computer_programs.wav'><span>computer programs</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3503/illegal_money.wav'><span>illegal money</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3503/printing_machines.wav'><span>printing machines</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3503/the_secret_service.wav'><span>the Secret Service</span></div></div></div><div class='question-buttons'><button class='skip-button'></button><button class='hint-button'></button><button class='speak-button'></button></div></div></div>
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