Description
NOTE: The HF scientific Pro Check standards are no longer in production HOWEVER, there may be an alternative soon available. Please check with us in September 2021!
Catalog No. 28335
Low NTU Value – Less than 1 NTU Precise value determined after calibration with Primary NTU Standards
Solid Secondary Validation Standard for use with the Micro TOL series (can also be used with HF scientific laboratory instruments, but will not work with the Micro TPW or Micro TPI portable turbidimeters due to the difference in the size of the optics on those units).
