Specification: Item Type: Turbidimeter Material: ABS Product Size: Approx. 21 x 7.5 cm / 8.3 x 3 in Measuring Principle: 90 Scattered light Minimum Indication: (NTU) 0-200 Measuring Range: (NTU) 0.1 Calibration Point: 2 Indication Error: 6%(2%F.S) Repeatability: 0.5% Zero Drift: 0.5%F.S Power Supply: DC 1.5V 5 x AA alkaline dry batteries (Battery Not Included) Parameters Voltage: US plug 100-240V 50/60Hz/0.1A/DC5V, automatic shutdown, AC and DC dual purpose Weight: Approx. 1210g / 42.7oz Package List: 1 x Turbidimeter (Battery Not Included) 1 x Adapter 3 x Bottle 1 x Tube 1 x Storage Box 1 x Manual When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!