As the lightest and most compact portable spectrophotometer, the Hach DR1900 excels in the field. Field testing oftentimes takes you to dusty and wet terrains – therefore, the instrument is built for rugged conditions. It’s flexible, accepting the widest range of vial sizes, and has a large screen with simple user interface to make testing easier even in the most demanding circumstances. However, underneath the rugged exterior, the DR1900 has the largest number – over 220 – of the most commonly tested preprogrammed methods already built in. The easy-to-use interface can be used to create your own methods. Tests are performed with a wavelength range of 340 to 800 nm, making the DR1900 a field instrument you can use to obtain results typically seen in laboratory instruments.