HOLDPEAK Dissolved Oxygen Meter 20mgAltitude Compensation : 0-1000 m Auto Temperature Comp : Supported (ATC) DO Accuracy : ±3.0% full scale DO Calibration : 100% saturation in air Data Storage : Data Storage Dissolved Oxygen Range : 0.0-20.0 mg/L Dissolved Oxygen Range1 : 0.0%-199.9% High-concerned chemical : none Salinity Compensation : 0-42 p.Product Highlights Product: HOLDPEAK Dissolved Oxygen Meter, 20mg DO Meter, Digital DO Tester, Oxygen Meter, Water Quality Tester for Aquaculture, 0.1 Mg/L Shopping focus: Daily use Choose your option: Confirm the selected size, color, specification and included accessories before ordering. Specifications and CompatibilityCheck the selected product variant, images and listed specifications for fit and compatibility. Features may differ between configurations.Questions Before Ordering Which option should I choose? Match the listed variant to your intended use. What is included? Refer to the chosen variant and product images. Will it fit my device or space? Confirm the specifications before purchase. Is every option identical? Features and included pieces can vary by variant. Where can I find delivery details? Review the shipping information at checkout. Related Products Water Quality Tester Pen Meter Handheld Ultrasonic Oxygen Detector Concentration Holdpeak Digital Capacitance Meter Diagnostic Holdpeak Smd Component Tester Resistance Holdpeak Hp Mini Multimeter Digital Holdpeak Hp Ammonia Gas Detector Holdpeak Hp Ammonia Gas Tester