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Detergents (anionic surfactants) |
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 Method
References: USEPA Methods for Chemical Analysis of Water and Wastes, Method 425.1 (1983). APHA Standard Methods, 20th ed., pp. 5-47, Method 5540 C (1998). ASTM D 2330-88 (1995), Methylene Blue Active Substances.
Detergents can be introduced into the water supply by industry, soap manufacturers, and private households. Environmental analysts often include a determination of anionic detergents when assessing surface water pollution.
The methylene blue active substances (MBAS) method is used in a 3-minute procedure to measure anionic detergents in the 0-3 ppm (mg/L) range. The procedure features a unique extraction/sampling technique that eliminates several steps required in other test procedures and provides increased sensitivity.
Anionic detergents react with methylene blue to form a blue-colored complex that is extracted into an immiscible organic solvent. Results are expressed in ppm (mg/L) as linear alkylbenzene sulfonate (LAS), equivalent weight 325.
Shelf-life: eight months. We recommend stocking quantities that will be used within seven months. |
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| • Click to View MSDS and Kit instructions |
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 Visual Kits |
0-3 ppm
0.125 ppm / Method: Methylene Blue |
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Cat# |
| CHEMets Kit |
K-9400 |
| | CHEMets Refill, 20 ampoule sets, Shelf-life 8 months | R-9400 |
| | Comparator, Shelf-life 2 years:
0, 0.25, 0.50, 0.75, 1.0, 1.5. 2.0, 3.0 ppm | C-9400 |
| | Kit comes in a cardboard box and contains everything needed to perform 20 tests: Refill, Comparator, reaction tube with lid, tip breaking tool, ampoule caps, instructions, and MSDS. | |
| | Kit didatangkan di dalam kotak kadbod dan mengandungi semua keperluan untuk melakukan 20 ujian: Isian semula, Pembanding, tabung tindakbalas dengan penutup, alat pematah tip, penutup ampul, arahan, dan MSDS. | |
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 Instrumental Kits |
0.25-2.50 ppm
Methylene Blue |
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Cat# |
| Detergents SAM Kit |
I-2017 |
| | Instrumental Kit, 20 double-point ampoules, 21 test tubes, dropper bottle with cap, tip-breaking tool, instructions, and MSDS,
Shelf-life 8 months. | K-9403 |
| | SAM Kit comes in a plastic case and contains everything needed to perform 20 tests: Instrumental Kit, SAM Photometer, 2 AA batteries, and instructions. | |
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Kit Components common to Detergents |
| Description |
Cat# |
| | Tip Breaking Tool Pack (1 ea) | A-0079 |
| | Reaction Tube w/Lid, Detergents (1 ea) | A-0087 |
| | Ampoule Caps Pack (100 ea) | A-0095 |
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