Mystrica Colorimeter 4 Pack With Accessories. A set of four Mystrica 2.0 wireless colorimeters in deep Gratnells tray with lid and polyethylene foam insert. The second generation Mystrica colorimeter can use either standard 4.5 mL cuvettes or test tubes up to 12 mm diameter.The kit comprises: 4 Mystrica 2.0 Colorimeters; 40 4 mL cuvettes; 80 cuvette caps; 25 12 mm glass test-tubes; 4 cuvette racks; 4 USB cables; 4 laminated instruction sheets; 2 user manuals.• RGB (630 nm, 525 nm, 465 nm)• Absorbance/transmission measurement• Straightforward one-step calibration• 0.1 sensitivity• 4x AA batteries (included)