HACH Automatic Titrator by Hachfeld HACH Automatic Titrator by Hachfeld Description Description HACH Automatic Titrator by Hachfeld Related products HACH DR300 Pocket Colorimeter by Hachfeld Autotitrators, Hach’s TitraLab AT1000. DR6000 UV VIS HACH TL23 series laboratory Benchtop Turbidimeter by Hachfeld