Hexavalent chromium Gabay sa Pagpili: Mga Portable na Instrumento Q-Cr6 Hexavalent Chromium portable colorimeter T-CP40 Portable Colorimeter para sa Tubig na Iniinom T-6800 Multi-parameter Portable Colorimeter Mga Instrumentong Lab Z-T700 Intelligent Multi-parameter Analyzer Z-D700 Multi-parameter Analyzer TA-60 Intelligent Multi-function Water Analyzer TA-98 UV Visible Spectrophotometer