HACH AT1000 Automatic Titrator by Hachfeld HACH AT1000 Automatic Titrator by Hachfeld Description Description HACH AT1000 Automatic Titrator by Hachfeld Related products DRB200 Digital Reactor Block by Hachfeld HACH DR300 Pocket Colorimeter by Hachfeld Digital Titrators. Portable and robust digital Titrator HACH DR3900 Vis Spectrophotometer by Hachfeld