Beja Expert Licensed User Longtime User Sep 28, 2016 #1 Hi folks I realy need to know if there's a way to know if a pen signature is one month or one year old.. Any methods or devices you guys know of? Best
Hi folks I realy need to know if there's a way to know if a pen signature is one month or one year old.. Any methods or devices you guys know of? Best
wonder Expert Licensed User Longtime User Oct 5, 2016 #2 Sure there is: Age determination of ballpoint pen ink by thermal desorption and gas chromatography-mass spectrometry.
Sure there is: Age determination of ballpoint pen ink by thermal desorption and gas chromatography-mass spectrometry.