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Hardness 1 buffer solution, 100 mL

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SKU: 42432

Manufacturer: Hach

Availability: Order only

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Buffer Solution, for Hardness titrations with a pH 10,1 ± 0,1 at 20°C.

Used with test kits and Hach handheld digital titrator.

Quantity: 100 mL. (also available in sizes 50, 500 and 1000 mL)

EDTA Standard solution, 0,035 N, 100 mL

SKU: 2349932

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SKU: 1438901

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SKU: 1438801

Description Specifications Downloads Recommended products

Description

Hardness 1 buffer solution, 10,1 ± 0,1 pH at 20 °C (42432) for Hardness titrations from Hach. Designed for use with test kits and Hach handheld digital titrator.

Application: For water, wastewater and process water.

Summary of method: A buffer solution (an organic amine and one of its salts) is added to the sample to adjust the pH to 10.1. An organic dye, calmagite, is then added as the indicator for the test. The organic dye reacts with calcium and magnesium ions to give a red-colored complex. The EDTA (ethylenediaminetetraacetic acid) titrant is added, which reacts with all of the free calcium and magnesium ions in the sample. After the EDTA has reacted with all of the free magnesium ions, the EDTA removes the magnesium ions from the indicator. The indicator color then changes from red to blue.

Specifications

Application area	Environmental monitoring, Wastewater, Beverages, Laboratory analysis
Type	Standard pH solutions
Industry	Ecology, Pulp and paper, Pharmaceutical, Glass, Power generation, Transport, Chemical, Food and Beverage, Municipal
Parameters	Hardness
Measurement Range	10 - 4000 mg/L as CaCO3
Method	EDTA
Quantity	100 mL