HF scientific DRT-100B Research Turbidimeters - Manual (Page 3)

DRT-100B (5/00)
FOREWORD
HF TURBIDIMETERS
HF turbidimeters are manufactured to meet design criteria for nephelometers as described in Standard
Methods For Examination of Water and Wastewater. HF turbidimeters are approved by the U.S. EPA* as a means
to measure the turbidity of potable water, waste water, and other liquids.
HF turbidimeters provide a linear display of turbidity, throughout all ranges, in Nephelometric Turbidity
Units (NTU). HF turbidimeters use solid state electronic components because they resist thermal variation and are
not affected by normal line voltage fluctuations.
HF turbidimeters can be calibrated using HF scientific factory certified Secondary Standards or Formazin.
Factory calibration is accomplished using HF scientific Secondary Standards, which are factory certified traceable
to Formazin, therefore, this instruction manual describes the proper procedures for calibration of HF turbidimeters
using Secondary Standards.
HF turbidimeter manuals are designed to assist the user in taking full advantage of the instrument in a
majority of its applications. However, in the event that unusual circumstances or problems, not covered by this
manual, arise please feel free to contact our local distributor or the manufacturer.
HF scientific, inc.
3170 Metro Parkway
Fort Myers, Florida 33916-7597
Phone: (941) 337-2116
Fax: (941) 332-7643
Our engineering staff is available to help you with your specific needs.
*EPA approved means the instrument meets or exceeds the design and performance criteria as specified in
the United States Environmental Protection Agency method 180.1.