Cyanide Analyzer | Matthias G. Monn

Cyanide Analyzer | Matthias G. Monn

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Cyanide Analyzer Matthias G. Monn Overview

The Cyanide Analyzer Matthias G. Monn can perform continuous analysis of heavy metals, Cyanide (CN-), and many other parameters in water. Technologies employed are colorimetric (photometric) and ion-selective electrodes (ISE). Low consumption of reagents and very high reagent stability ensures person-free operation, direct measurements, standard addition, and titration support the ideal measurement strategy. The robust design and high-quality parts of the Cyanide Analyzer guarantee a long lifetime and minimum maintenance efforts. Automated calibration and cleaning steps support this goal.

Any chemical compound containing the cyano- group -C=N with the carbon atom triple-bonded to the nitrogen atom is a cyanide. The cyano-group can be found in various kinds of gaseous, liquid and solid compounds. Cyanide is introduced into organic molecules by displacement of the corresponding organic halide during industrial processes. Typical fields of business encountering cyanide are the steel industry, gold and silver mining, production of tints and varnish, synthetic resins, synthetic fibres, electroplating, coal and crude oil production.

For cyanide the guideline value for chemicals that are of health significance in drinking water according to World Health Organization (WHO) is 0.07 mg/liter as total cyanogenic compounds. Similar to hydrocyanic acid, cyanides are extremely toxic as a consequence of being able, even with very weak acids (e.g. water), to protonate and build hydrogen cyanide (HCN).

Cyanide is measured as chelate complex between CN- ions in the water and sensitive spectrophotometric reagent dye. Change of the intensity of the visible light throughout cuvette containing formed complex is directly proportional to Cyanide concentration.

Cyanide Analyzer Features

  • Robust Design.
  • Minimal maintenance.
  • Easy handling.
  • High accuracy and precision.
  • Suitable for mission critical applications.
  • Automated cleaning and calibration.


Cyanide Analyzer Matthias G. Monn Technical Specifications


Measurement variable Cyanide (CN-) Free, WAD Cyanide.
The standard addition method enables the measurement of total Cyanide.
Measurement application Industrial wastewater and monitoring.
Measurement ranges 0.01 – 5.00 mg/L (ppm) other ranges possible upon request
Accuracy and Precision ± 3 % (based on full scale)
Resolution 0.005 mg/L
Calibration and cleaning Automated
Seibold Reagent kit Buffer, Conditioner and Dye



Measurement method
Spectrophotometric (LED, detector)
Measurement interval
Continuous; Discontinuous (programmable, external start)
Sample and Reagents consumption per measurement
Sample: ~ 75 – 200 ml
Seibold Buffer, Conditioner and Reagent: ~ 3 ml


Ambient operating temperature, sample temperature: 5 to 40°C
Ambient operating humidity: Up to 95 % RH non-condensing


Power supply
Supply voltage: 220 – 230 V AC, 50 – 60 Hz (110 V AC or 24 V DC, optional)
Power consumption: Approx 50 VA
Output signal: 4 – 20 mA
Color | TFT | Liquid Crystal Display (LCD) with built-in backlight and brightness adjustment.


Maintenance interval: 3-6 months



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