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Sales: (03) 9769 0666   |    Mon to Fri: 8:30am – 5:00pm
Hanna Instruments Australia
Sales: (03) 9769 0666   |    Mon to Fri: 8:30am – 5:00pm

Alkalinity Chemical Test Kit - HI3811

$104.14


Prices include GST. Not all items are in stock. Call 03 9769 0666 to confirm.

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.

  • Pre-made reagents for ease of use
  • All reagents marked with expiration date and lot number for traceability
  • Manual titration performed with color indicator

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.

Features at-a-glance

  • Complete setup
    • All required materials are included with the test kit, such as the sample beakers, plastic syringe, phenolphthalein indicator, and bromophenol blue indicator.
  • High resolution
    • Readings from 0 to 100 mg/L are determined to 1 mg/L resolution
    • Readings from 0 to 300 mg/L are determined to 3 mg/L resolution
  • Replacement reagents available
    • There is no need to buy a new kit when reagents are exhausted. The HI3811-100+I472 reagent set can be ordered to replace the reagents supplied with the kit. This reagent set comes with 1 (10mL) dropper bottle of phenolphthalein indicator, 1 (10mL) dropper bottle of bromophenol blue indicator, and 1 (120mL) bottle of HI3811-0 reagent.

 

Significance of Use

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

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 (7.9x4.7x2.4 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.

All prices are inclusive of GST and not all items are stock items, if you require an immediate solution please send an email to sales@hannainst.com.au or call us on (03) 9769 0666.

Free standard delivery: We offer free delivery within Australia on orders over $150, typically arriving within 5 to 7 days. Delivery times may vary depending on the courier service and the recipient's location. Free shipping is not available with other offers or discounts.

Same-day despatch: Place your order before 1 PM Monday to Friday for same-day despatch (leaves our warehouse). Delivery times may vary depending on the courier service and the recipient's location. Subject to stock availability.

Please note that we do not offer shipping to PO Box addresses.

Additional information

Weight 0.4 kg
Parameter

Alkalinity