HACH HQD Benchtop Multiparameter Meter by Hachfeld HACH HQD Benchtop Multiparameter Meter by Hachfeld Description Description HACH HQD Benchtop Multiparameter Meter by Hachfeld Related products HQD Benchtop HQ Portable Series Chemistries and Reagents HACH Water Testing Reagents by Hachfeld