On the basis of the ET1180 turbidity meter, the total chlorine and free chlorine determination functions have been added. One instrument can complete the determination of two essential items for tap water, greatly facilitating tap water users. Pre packaged residual chlorine reagents can be selected, greatly simplifying the user's measurement work.

Instrument principle and purpose
Turbidity measurement: 90°Principle of Light Scattering
Suspended solids measurement: transmittance absorbance method
Residual chlorine measurement: DPD method
Used for turbidity/suspended solids concentration/residual chlorine measurement of liquid samples such as surface water, wastewater, and beverages

Instrument characteristics
LCD Chinese display, good human-machine dialogue interface, easy to operate.
Small size, light weight, suitable for laboratory and on-site use.
Automatic range change, high sensitivity, wide measurement range.
Multiple turbidity units can be freely switched to meet various needs.
According to user needs, the function of measuring suspended solids can be added.

Instrument performance
Measurement range: 0-200NTU or 0-4000NTU
Low range: 0.02-2mg/L (total chlorine/free chlorine)
High range: 0.1-6.0mg/L (total chlorine/free chlorine)
Light source: Light emitting diode (LED)
Detector: Silicon photodiode
Accuracy of absorbance: ± 0.0015Abs
Filter bandwidth: 15 nanometers
Wavelength: 600 nanometers
Absorption range: 0-2.5Abs

Pre packaged residual chlorine reagents can be selected, greatly simplifying the user's measurement work.
Supporting residual chlorine reagents: Each sample is paired with pre packaged reagents