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The HI3811 is a chemical test kit that measures alkalinity by titration with hydrochloric acid. The HI3811 is supplied complete with all of the reagents and equipment necessary to perform approximately 110 tests.
The HI3811 is a titration-based chemical test kit that determines the alkalinity concentration in samples within a 0 to 100 mg/L (ppm) CaCO3 or 0 to 300 mg/L CaCO3 range. The HI3811 is supplied with all of the necessary reagents and equipment to perform the analysis. The test kit contains enough reagents for perform approximately 110 tests.
Alkalinity is the quantitative capacity of a water sample to neutralize an acid to a set pH. This measurement is very important in determining the corrosive characteristics of water due primarily to hydroxide, carbonate, and bicarbonate ions. Other sources of alkalinity can be from anions that can be hydrolyzed such as phosphates, silicates, borates, fluoride, and salts of some organic acids. Alkalinity is critical in the treatments of drinking water, wastewater, boiler and cooling systems, and soils.
Alkalinity can be measured as Phenolphthalein Alkalinity and Total Alkalinity. The Phenolphthalein Alkalinity is determined by neutralizing the sample to a pH of 8.3 using a dilute hydrochloric acid solution and a phenolphthalein indicator. This process converts hydroxide ions to water, and carbonate ions to bicarbonate ions:
OH– + HCl → H2O + Cl–
CO32- + HCl → HCO3– + Cl–
Since bicarbonate ions can be converted to carbonic acid with additional hydrochloric acid, the Phenolphthalein Alkalinity measures total hydroxide ions, but only half of the bicarbonate contribution. To completely convert the carbonate ions, hydrochloric acid is added until the sample pH is 4.5, which is known as Total Alkalinity:
HCO3– + HCl → H2CO3 + Cl–
| Weight | 0.4 kg |
|---|---|
| Parameter | Alkalinity |
| SKU | HI3811 |
| Name | Alkalinity Chemical Test Kit – HI3811 |
| Alkalinity Measurement Type | titration |
| Alkalinity Range | 0 to 100 mg/L CaCO₃; 0 to 300 mg/L CaCO₃ |
| Alkalinity Resolution | 1 mg/L (0 to 100 mg/L range) 3 mg/L (0 to 300 mg/L range) |
| Alkalinity Method | acid titration using phenolphthalein and bromophenol blue |
| Alkalinity Number of Test | 110 |
| Weight | 460 g (17.2 oz.) |
| Dimensions | 200x120x60 mm (7.9×4.7×2.4 in.) |
HI3811 test kit comes with 10 mL phenolphthalein indicator, 10 mL bromophenol blue indicator, 120 mL alkalinity titrant, 10 mL calibrated vessel, 50 mL calibrated vessel, and calibrated syringe with tip.
To empower customers to achieve quality
by supplying intuitive, accurate, and reliable analytical instruments with exceptional customer service and value.
We take pride in every product we build. From an original idea, to a completed product ready for testing. We oversee every aspect of the manufacturing process. It is this level of attention to detail that sets us apart.
To empower customers to achieve quality by supplying intuitive, accurate, and reliable analytical instruments with exceptional customer service and value.
We take pride in every product we build. From an original idea, to a completed product ready for testing. We oversee every aspect of the manufacturing process. It is this level of attention to detail that sets us apart.
To empower customers to achieve quality by supplying intuitive, accurate, and reliable analytical instruments with exceptional customer service and value.
We take pride in every product we build. From an original idea, to a completed product ready for testing. We oversee every aspect of the manufacturing process. It is this level of attention to detail that sets us apart.
