Standard Calibration Solution Set for Apera Instruments TN400 Portable Turbidity Meter.
Reagecon high-molecular polymer turbidity standard solutions (0.02 NTU, 20.0 NTU, 100 NTU, 800 NTU).
U.S. EPA certified, non-toxic, accurate, and easy to use. They have evident advantages compared to traditional Formazin standard solution, which are highly toxic and inaccurate.
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