https://www.sssoptical.com/
Ammonia Sensor Photonic Security Ink | United States | SSS Optical
SSS Optical Technologies (SSS Optical, SSSOT) is specializing in Cheap Continuous Sensor of Ammonia for Animal House and Photonic Security Nano Ink and Light...
ammonia sensorsecurity inkunited statesphotonicsss
https://www.mdpi.com/1424-8220/22/4/1528
A New Analytical Method to Quantify Ammonia in Freshwater with a Bulk Acoustic Wave Sensor
A new method to analyse ammonia in freshwater, based on a piezoelectric quartz crystal coated with the metalloporphyrin...