A small pH sensor catheter of the endoscope for acidity test of gullet and stomach

Engineering & Materials Science

• pH sensors 100%
• Acidity 89%
• Catheters 82%
• Endoscopy 80%
• Field effect transistors 13%
• Animals 12%
• Ions 11%
• Glass 10%
• Experiments 4%

Physics & Astronomy

• stomach 94%
• acidity 89%
• endoscopes 85%
• sensors 39%
• sensitivity 9%
• animals 7%
• buffers 6%
• chips 6%
• field effect transistors 6%
• glass 4%
• ions 3%

Chemical Compounds

• pH Value 27%
• Field Effect 8%
• Glass 5%
• Buffer Solution 5%
• Length 4%
• Ion 3%