HACH HQ Series Portable Meters by Hachfeld HACH HQ Series Portable Meters by Hachfeld Description Description HACH HQ Series Portable Meters by Hachfeld Related products HQD Benchtop HACH DR6000 UV Vis Spectrophotometer by Hachfeld HQ Portable Series HACH DR1900 Portable Spectrophotometer by Hachfeld