Hach-Lange 1720E Low Range Turbidimeter - Manual (Page 10)

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General Information
2.1.3 General Product Information
The 1720E Turbidimeter is a continuous-reading nephelometric turbidimeter designed for
low-range turbidity monitoring. This process turbidimeter is capable of measuring turbidity
from 0.001 to 100.0 NTU. Calibration is based on formazin, the primary turbidity reference
standard adopted by the APHA Standard Methods for the Examination of Water and
Wastewater and the U.S. Environmental Protection Agency (EPA) and on StablCal
® which
is also recognized as a primary standard.
The 1720E Turbidimeter can be operated using an sc controller. Refer to the Operation
section (
Section 5 on page 17 ) for more information.