Chemetrics I-2017, Photometer Single Analyte Meter (SAM) Kit

SAMs (Single Analyte Meters): Value and Convenience Single Analyte Meters (SAMs) provide unprecedented economy, simplicity, and accuracy for dedicated photometers. SAMs provide results equivalent to other meters and probes costing much more. SAM (Single-Analyte Photometer) 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.. The Methylene Blue Method 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. Shelf-life: eight months. We recommend stocking quantities that will be used within seven months.