DR1900 VIS (PORTABLE) DR1900 VIS (PORTABLE) Description Description DR1900 VIS (PORTABLE) Related products HACH DR300 Pocket Colorimeter by Hachfeld HACH DR3900 Vis Spectrophotometer by Hachfeld HACH DR1900 Portable Spectrophotometer by Hachfeld DR900 Multiparameter Portable Colorimeter by Hachfeld