HACH LANGE drinking water analysis

➔ Laboratory automation: see Chapter 9 ➔ Samplers: see Chapter 10 ➔ Process measurement technology: see Chapter 11-20
Turbidity measurement to ISO and EPA
standards—in the laboratory and in the field
Turbidity is an easily obtainable, meaningful parameter, and is firmly established in water analysis, quality
assurance and process control.
The 2100 series turbidimeters from HACH combine practical design with standard-compliant measurement
technology. All instruments are available with the option of an infrared or a white light source in line with
ISO or EPA.
Precise and reliable
– In detecting the slightest turbidity
e.g. in drinking water
– In the treatment of wastewater and
process water
– In the monitoring of municipal and
industrial filtration processes
– In the monitoring of process water
streams
– For quality assurance
Simple calibration with
STABL CAL
Turbidimeters are tested and calibrated
with formazin suspensions. Reliable
turbidity measurement requires the
preparation of a formazin standard
solution, as prescribed by
EN ISO 7027 for instrument calibration.
With its STABL CAL range, HACH is
the world’s only supplier of stabilised,
directly usable, formazin primary
standards in different concentrations.
Comes with an analysis certificate!
White light or infrared 60°
www.greyhoundchrom.com
The patented RATIO optical system from HACH
compensates for interferences with a mixture of
transmitted and scattered light
RATIO optical system
compensates for interferences
The RATIO optical system in all 2100
series turbidimeters detects and compensates
for interference factors such
as the intrinsic colour of the sample
or fluctuations in the lamp output.
The measured value is determined from
several signals. In practice, this means
outstanding accuracy and sensitivity
over the total measuring range – also
at ultrahigh levels of turbidity!
90°
180°
Four RATIO detectors
120°
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