Turbidity Meter | Sper Scientific #860040 This compact, battery operated meter is easily portable for use in the field or lab. Turbidity (undissolved solids) is an important measuring instrument of water quality in environmental testing, wastewater, petrochemical, beverage industry, and electroplating. This compact, battery operated meter is easily portable for use in the field or lab. Uses the highly accurate nephelometric method to meet ISO 7027 standards. Features push-button automatic 2-point calibration, auto-ranging, and min-max recall, Light Source: LED, 850 nm. Comes ready to use in a hard, foam lined, carrying case with 0 NTU and 100 NTU calibration solutions, 2 sample cell bottles, distilled water, cleaning cloth, instruction manual, and 6 AAA batteries. Dimensions: 6½ x 3 x 2½" (165 x 75 x 65 mm) Weight: 5 lbs (2268 g) Highlights: Automatic 2-point calibration Auto-ranging and min-max recall Meets ISO 7027 Standards Includes carrying case Sper Scientific Turbidity Meter Kit Comes with Everything You Need Includes Batteries, Manual and Solution: 0 NTU and 100 NTU calibration solutions, 2 sample cell bottles, distilled water, cleaning cloth, instruction manual and 6 AAA batteries. Hard Shell Carrying Case Comes ready to use in a hard shell, foam lined carrying case. Turbidity Meter and Solution High quality meter and components