Dissolved Oxygen Chemical Test Kit – HI3810 – Hanna Instruments South Africa

Description

The HI3810 is a titration-based chemical test kit that determines the dissolved oxygen concentration within the 0 to 10 mg/L Ol₂ range. The HI3810 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 glass stoppered bottle, indicator and reagent bottles, and calibrated syringe.

High resolution

Readings from 0 to 10 mg/L are determined to 0.1 mg/L resolution.

Replacement reagents available

There is no need to buy a new kit when reagents are exhausted. The HI3810-100 can be ordered to replace the reagents supplied with the kit.

Significance of Use

The concentration of dissolved oxygen in water is extremely important in nature as well in man’s environment. In oceans, lakes, rivers, and other surface water bodies, dissolved oxygen is essential to the growth and development of aquatic life. Without oxygen, water can become toxic due to the anaerobic decaying of organic matter. In man’s environment, water must contain at least 2 mg/L of oxygen to protect water pipes from corrosion. However, boiler system water, in many cases, cannot contain greater than 10 mg/L oxygen.

A modified Winkler method is used in the HI3810 test kit. Manganous ions react with oxygen in the presence of potassium hydroxide to form a manganese oxide precipitate (Step 1). An azide is present to prevent any nitrite ions from interfering with the test. With addition of acid, manganese oxide hydroxide oxidizes the iodide to iodine (Step 2). Since the amount of iodine generated is equivalent to the oxygen in the sample, the concentration of iodine is calculated by titration of thiosulfate ions that reduce the iodine back to iodide ions (Step 3).

Step 1: 2Mn²⁺ + O₂ + 4OH^– → 2MnO(OH)₂

Step 2: MnO(OH)₂ + 2I^– + 4H⁺ → Mn²⁺ + I₂ + 3H₂O

Step 3: I₂ + 2S₂O₃^2- → 2I^– + S₄O₆^2-

Additional information

Weight	0.7 kg
Parameter	Dissolved, Oxygen

Specifications

SKU	HI3810
Name	Dissolved Oxygen Chemical Test Kit – HI3810
Dissolved Oxygen Measurement Type	Titration
Dissolved Oxygen Range	0.0 to 10.0 mg/L O?
Dissolved Oxygen Resolution	0.1 m/L
Dissolved Oxygen Measurement Method	modified Winkler
Dissolved Oxygen Number of Test	110
Weight	910 g (34.0 oz.)
Dimensions	260x120x60 mm (10.2×4.7×2.4 in.)

Ordering Info

HI3810 test kit comes with 30 mL manganous sulfate solution, 30 mL alkali-azide reagent, 60 mL sulfuric acid solution (2), 10 mL starch indicator, 120 mL titrant solution, glass bottle with stopper, 10 mL calibrated vessel, and calibrated syringe with tip.