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The HANNA dissolved oxygen portable test kit can determine the oxygen concentration in water quickly and easily. A modified Winkler method is used. Manganous ions react with oxygen in the presence of potassium hydroxide to form a manganese oxide precipitate. An azide is present to prevent any nitrite ions from interfering with the test. On addition of acid, manganese oxide hydroxide oxidizes the iodide to iodine. 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.
Order Information:
HI 3810 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.
| Method | Titration | |
| Range | 0.0-10.0 mg/L | |
| Smallest Increment | 0.1 mg/L | |
| Chemical Method | Modified Winkler | |
| Number of Tests | approx. 110 | |
| Weight | 910 g |
| Condition | New |
Hanna Instruments products are manufactured in our ISO 9001 facilities, meeting the highest quality standards in the industry. Hanna's high standards also apply should a product be returned due to defects in material or workmanship. Our extensive warranty extends up to three years on some products. Limitations: Warranted products may be returned for repair or replacement only at the discretion of Hanna Instruments. In some circumstances, remedy may constitute refund for the price paid for the product.
The warranty period commences from the original date of sale to the user or a maximum of 18 months from factory ship date. Warranty is valid only when the product is used under normal conditions and in accordance with operating limitations and prescribed maintenance procedures. The express warranty stated previously is the only express warranty given by Hanna to the end-user buyer. Hanna expressly disclaims any warranties implied by law, including but not limited to warranty of merchantability of fitness for a particular purpose. Hanna shall not be liable for any individual or consequential damages of any kind for breach of any warranty, negligence, on the basis of strict liability or otherwise. Hanna's warranty periods are:
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| by MARTIN VITTA ORDUZ | Date Added: Saturday 24 November, 2012 |
AUNQUE TUVE PROBLEMAS AL COMPRAR ESTE PRODUCTO POR EL TRAMITE EN MI TARJETA DE CRDITO, DESPUS DE SOLUCIONADO ESTO, ME GUSTO LA RAPIDEZ EN EL DESPACHO Y ENTREGA OPORTUNA DEL PRODUCTO. ME GUSTARIA QUE AMPLIARAN LA DESCRIPCION DEL PRODUCTO Y SABER QUE CONTIENE EN REALIDAD (UNA FOTO DEL PRODUCTO A DESPACHAR).
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