Richmond Pharmacology are experts in providing assessments for pharmacodynamic gastrointestinal studies. We have enhanced our capabilities with the state of the art Flexilog pH recording system. Ambulatory 24-hour esophageal pH recording has become recognized as the gold standard for the documentation of acid reflux and for related symptoms to reflux episodes. This is a highly accurate, flexible and reliable measuring device, continuously measuring the acidity of the stomach and bowels. Flexilog provides a sophisticated, easy to use alternative to a full manometry system and enables accurate logging of events and the rapid production of customized reports.