DR1900 VIS (PORTABLE) DR1900 VIS (PORTABLE) Description Description DR1900 VIS (PORTABLE) Related products HACH 2100Q Portable Turbidimeter HACH DR6000 UV Vis Spectrophotometer by Hachfeld TU5200 Laboratory Laser Turbidimeter by Hachfeld HACH TL23 series laboratory Benchtop Turbidimeter by Hachfeld