R-9423 Anionic Surfactant Detergent Refill (MBAS) - High-Performance Cleaning Solution for Laundry, Dishwashing & Industrial Use

Product Description

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 Method . References: USEPA Methods for Chemical Analysis of Water and Wastes, Method 425.1 (1983). APHA Standard Methods, 22nd ed., Method 5540 C - 2000. ASTM D 2330-02, Methylene Blue Active Substances. The methylene blue active substances (MBAS) method is used in a 3-minute procedure to measure anionic detergents. 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. Method: Methylene Blue. SAM (Single-Analyte Photometer) SAM Kit comes in a cardboard box and contains everything needed to perform 20 tests: R-9423 Instrumental Refill, SAM Photometer, light shield, 4 AAA batteries, screwdriver, and instructions. Shelf-life: The Instrumental refill included with this instrument has a shelf-life of 8 months.