HACH AT1000 Automatic Titrator by Hachfeld HACH AT1000 Automatic Titrator by Hachfeld Description Description HACH AT1000 Automatic Titrator by Hachfeld Related products Digital Titrators. Portable and robust digital Titrator TU5200 Laboratory Laser Turbidimeter by Hachfeld Autotitrators, Hach’s TitraLab AT1000. DR1900 VIS (PORTABLE)