Dissolved Oxygen, Vacu-vials Instrumental Kit, CHEMetrics

Dissolved Oxygen in water test kits for environmental and drinking water applications (ppm range) employ the indigo carmine method. The reduced form of indigo carmine reacts with D.O. to form a blue product. The indigo carmine methodology is not subject to interferences from temperature, salinity, or dissolved gases such as sulfide, which plague users of D.O. meters.

• Analysis Time: 2 minutes

The level of dissolved oxygen in natural waters is often a direct indication of quality, since aquatic plants produce oxygen, while microorganisms generally consume it as they feed on pollutants. At low temperatures the solubility of oxygen is increased; during summer, saturation levels can be as low as 4 ppm. Dissolved oxygen (D.O.) is essential for the support of fish and other aquatic life and aids in the natural decomposition of organic matter. Waste treatment plants that employ aerobic digestion must maintain a level of at least 2 ppm dissolved oxygen.

Ordering information: This kit requires the use of the V-2000 or V-3000 Photometer, a SAM Photometer or a spectrophotometer capable of accepting a 13 mm diameter round cell. Instrument sold separately.

Delivery information: Kit comes in a cardboard box and contains everything needed to perform 30 tests: thirty ampoules, 25 ml sample cup, ampoule blank, and instructions.