Ammonia Nitrogen Gabay sa Pagpili: Mga Instrumentong Portable Q-3N Ammonia Nitrogen & Nitrate Nitrogen & Nitrite Nitrogen Portable Colorimeter T-CP40 Portable Colorimeter para sa Pag-inom ng Tubig T-6800 Multi-parameter Portable Colorimeter T-AM Aquaculture Portable Colorimeter Online Analyzer K600 Water Online Analyzer (K-Y02) Mga Instrumentong Lab Z-T700 Intelligent Multi-parameter Analyzer Z-D700 Multi-parameter Analyzer Z-T500 Intelligent Multi-parameter Analyzer Z-D500 Multi-parameter Analyzer TA-60 Intelligent Multi-function na Water Analyzer TA-98 UV Makikita Spectrophotometer