with Hach reagents for accuracy and optimal water quality assurance. DR1900 Portable Spectrophotometer · The DR1900 is the
measurement result. TNTplus Works With: DR6000™ UV-VIS Spectrophotometer · DR3900™ Benchtop Spectrophotometer · DR1900
Instruments · DR1900 Portable Spectrophotometers · DR300 Lab Instruments Colorimeters · DR3900 Laboratory Spectrophotometer
