HACH AT1000 Automatic Titrator by Hachfeld HACH AT1000 Automatic Titrator by Hachfeld Description Description HACH AT1000 Automatic Titrator by Hachfeld Related products Autotitrators, Hach’s TitraLab AT1000. Digital Titrators. Portable and robust digital Titrator HACH Automatic Titrator by Hachfeld HACH DR300 Pocket Colorimeter by Hachfeld