DR 900 Colorimeter The handheld colorimeter allows for quick and easy access to your most frequently used testing methods in less than four clicks. This colorimeter is waterproof, dustproof, shock resistant, and has been drop tested for greater quality assurance. This instrument comes with an intuitive user interface, a large data storage and a built-in USB port for the easy transfer of information. The handheld colorimeter also helps satisfying core testing needs by offering at least 90 of the most common testing parameters. Combining all these features with a push button backlit display for use in low light areas, you have a handheld colorimeter which is field-ready, and makes testing in harsh field environments a little less challenging.