VTSYIQI Turbidity Meter Calibration Solution 400NTU Formazine Standard Turbidity Solution Turbidity Calibration Standard 100ml for Handheld Turbidimeters Turbidity Meters SGZ-200BS SGZ-200B SGZ-20B

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A bottle of 400NTU Formazine Standard Turbidity Solution

VTSYIQI Portable Turbidimeter Calibration Solution Kit 400NTU 100ml Standard Formazin Solutions for SGZ-200BS SGZ-200B SGZ-20B SGZ-50B SGZ-400B Portable Turbidity Meter

Please note that there is only A bottle of 400NTU Formazine Standard Turbidity Solution in the package, and there is no Turbidimeter.