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Aluminum |
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 Method
References: APHA Standard Methods, 21st ed., Method 3500-AI B (2005). Rapid Modified Eriochrome Cyanine R (ECR) Method for Determination of Aluminum in Water, Kenneth E. Shull and Gene R. Guthan, pp 1456-1468, J. AWWA, Nov. 1967.
Aluminum forms a variety of minerals in the earths crust. Aluminum and its alloys have many uses: heat exchangers, construction materials, and aircraft parts. Alum (aluminum potassium sulfate) is used in water treatment to flocculate suspended particles but may raise the level of aluminum in finished drinking water. The maximum secondary contaminant limit for drinking water is 0.05-0.2 mg/L.
The Aluminum Vacu-vials test method is based on the reaction between aluminum and Eriochrome Cyanine R (ECR), which forms a red dye-lake at approximately pH 6.0 in proportion to the amount of aluminum present in the sample. Results are expressed
as ppm (mg/L) aluminum. |
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| • Click to View MSDS and Kit instructions |
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 Instrumental Kits |
0.04-0.25 ppm
Eriochrome Cyanine R (ECR) |
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Cat# |
| Vacu-vials Kit |
K-0603 |
| | Kit comes in a cardboard box and contains everything needed to perform up to 29 tests (except distilled water): thirty ampoules, Activator Solution, Neutralizer Solution, 25 ml sample cup, ampoule blank,1.0 mL syringe, instructions, calibration table, and MSDS. | |
| | Vacu-vials Kits require the use of the V-2000 Photometer or a spectrophotometer capable of accepting a 13mm diameter round cell. Instrument sold separately. | |
| | Although the test kit contains 30 ampoules, a fresh reagent ampoule blank must be prepared for each series of tests; there-fore, the number of samples that can be tested with each kit will vary from a maximum of 29 to a minimum of 15. | |
| | The Neutraliser solution is supplied as a dry chemical with no expiration date. Once reconstituted, it has a shelf-life of 6 weeks that can be extended to 3 months if stored in the refrigerator when not in use. | |
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Kit Components common to Aluminum |
| Description |
Cat# |
| | Sample Cup Pack, 25 mL (6 ea) | A-0013 |
| | Ampoule Blank Pack (5 ea) | A-0023 |
| | Syringe Pack, 1.0 mL (6 ea) | A-0027 |
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