YSI provides accurate and stable 1 gallon (plastic container) turbidity standards for instrument calibrations.
For best results, we recommend use of YSI-certified polymer-based standards because:
- Our standards are prepared and labeled to be traceable to the EPA's primary standard, Formazin
- Polymer standards from other vendors may not be properly adjusted to meet YSI's traceability requirements (e.g. a 20 NTU labeled non-YSI bottle will read 25 NTU instead using a properly calibrated YSI turbidity sensor)
For YSI 6136 Sensors:
- 12.4 FNU for EXO and ProDSS = 12.7 FNU for YSI 6136
- 124 FNU for EXO and ProDSS = 126 FNU for YSI 6136
- 1010 FNU for EXO and ProDSS = 1000 FNU for YSI 6136
* YSI turbidity standards are no longer supported for 6026 sensors
* During winter months, shipment must be made via 2-day or next day carrier as the item is heat packed
NOTE: This product can expire. See an expiration guide below.