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EZ5000 Series Alkalinity and Hardness Analyzers

hach-ez5000-analizatory-shhelochnosti-i-zhestkosti.jpgProcess analyzer HACH LANGE EZ5000

SKU: EZ5004.99001C02

Manufacturer: Hach

Availability: Order only

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The EZ5000 Series Industrial Hardness and Alkalinity Analyzers are multi-parameter titrators that provide superior analytical accuracy and reliability. See the full description below to find an online hardness / alkalinity analyzer for the required measuring range. Contact us if you need more details or other configuration.


Description

Description

Online monitoring of chemical parameters and quality indicators of clean and polluted water: boiler feed water, cooling water, drinking water, waste water.

Ordering information

  • EZ5001 Total / free alkalinity 100 - 5000 mg/L CaCO3 (p/n EZ5001.99001C02)
  • EZ5002 Total and calcium hardness 100 - 1000 mg/L CaCO3 (p/n EZ5002.99001C02)
  • EZ5003 Total hardness 25 - 1000 mg/L, and free alkalinity 100 - 5000 mg/L (p/n EZ5003.99001C02)
  • EZ5004 Total hardness 25 - 1000 mg/L and total alkalinity 100 - 5000 mg/L (p/n EZ5004.99001C02)
  • EZ5005 Total hardness 25 - 1000 mg/L and total / free alkalinity 100 - 5000 mg/L (p/n EZ5005.99001C02)
  • EZ5006 Total hardness / total calcium hardness 25 - 1000 mg/L, and total / free alkalinity 100 - 5000 mg/L (part number EZ5006.99001C02)
  • EZ5011 Total hardness 25 - 1000 mg/L and total alkalinity 40 - 1000 mg/L (part number EZ5011.99001C02)

The determination of total hardness, calcium hardness, total alkalinity and free alkalinity is based on three methods combined in one analyzer.

Determination of the total hardness with the EZ5000 analyzer

The determination of the total hardness of water is based on the reaction of free calcium and magnesium with calmagite in an alkaline solution with the formation of a purple-red color. The calcium / magnesium complex is released by titration with EDTA, producing a blue color. The color change from red to blue is a measure of the amount of calcium and magnesium present in the sample. Color change is measured at 610 nm.
Analysis steps
The assay vessel is cleaned and filled with a fresh sample. After sampling, add acid solution, buffer solution and dye solution. Colorimetric titration with EDTA is performed at 610 nm. After determining the end point, the calcium and magnesium concentrations in the sample are determined.

Determination of calcium hardness with the EZ5000 analyzer

Determination of the concentration of calcium in water is based on the reaction of free calcium with hydroxynaphthol blue in an alkaline solution with the formation of a purple-red color. The indicator calcium complex is released by titration with EDTA, producing a blue color. The color change from red to blue is a measure of the amount of calcium and magnesium present in the sample. Color change is measured at 610 nm.
Analysis steps
The assay vessel is cleaned and filled with a fresh sample. After sampling, add acid solution, buffer solution and dye solution. Colorimetric titration with EDTA is performed at 610 nm. After determining the end point, the calcium concentration in the sample is determined.

Determination of total and free alkalinity

The determination of the concentration of alkalinity in water is based on acid-base titration using a pH electrode. The sample is titrated with hydrochloric acid (HCl). After determining the end points, the alkalinity concentration is calculated.
Analysis steps (total alkalinity)
The assay vessel is cleaned and filled with a fresh sample. After sampling, the initial pH value is measured. Next, titration with hydrochloric acid (HCl) begins. After determining the end point (pH 4.5), the total alkalinity concentration is calculated.
Analysis steps (free alkalinity)
The assay vessel is cleaned and filled with a fresh sample. After sampling, the initial pH value is measured. Next, titration with hydrochloric acid (HCl) begins. After determining the end point (pH 8.3), the alkalinity concentration is calculated.

Specifications

  • Ambient temperature 10 - 30 °C ± 4 °C deviation at 5-95% RH (no condensation)
  • Cycle duration 20 - 30 minutes; 40 minutes (+ total hardness Ca)
  • Reagent requirements store between 10 and 30 °C
  • Sample temperature 10 - 30 °C
  • Sample quality maximum particle size 100 μm,
  • Dimensions (H x W x D) 690 mm x 465 mm x 330 mm
  • Weight 25 kg
Specifications

Specifications

Application areaEnvironmental monitoring, Wastewater, Drinking water, Treatment facilities, Process control
TypeIndustrial
IndustryPulp and paper, Power generation, Chemical, Food and Beverage, Municipal
ParametersAlkalinity, Hardness Ca and Mg, Hardness of water, Calcium Hardness
Measurement Range25 - 5000 mg/L CaCO3
Measurement methodTitrimetric
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