Labtron portable turbidity meter features an LCD screen, automatic power-off, and measures turbidity in ranges 0.00-20.0, 20.01-200, and 200.01-1000 NTU. It uses an LED/860 nm light source and supports NTU, FTU, EBC, and ASBC units. Includes a 25 mm x 65 mm sample bottle (20-25 ml).