Wet Chemistry - Chemical Oxygen Demand (COD) Brochure

Copyright Environmental Express, Inc., PSWCCOD12.10 Page 1E N V I R O N M E N T A L E X P R E S SCall 800.343.5319 or 843.881.6560 • www.environmentalexpress.comLow and middle range COD MicroVials with Mercury are EPA approved. Environmental Express offers two different reagent packages for low-range, high-range and ultra high-range COD measurement. MicroVials with mercuric sulfate fully comply with EPA methodology. COD vials without mercury are also available. Mercury-free vials should only be used when chlorides are not a concern and EPA reporting is not required. Description/ Range/ppm MDL Mercury EPA Approved Hach # Catalog #COD Vials, 0-150mg/L 10 yes yes 21258-15/25 B1010COD vials, 0-1500mg/L 30 yes yes 21259-15/25 B1015COD vials, 0-15,000mg/L 300 yes no 24159-15/25 B1020COD vials, 0-150mg/L 10 no no 25650-15/25 B0010COD vials, 0-1500mg/L 30 no no 25651-15/25 B0015COD vials, 0-15,000mg/L 300 no no — B0020Wet Chemistry: Chemical Oxygen Demand (COD)Easy-to-use COD MicroVials™ provide accurate COD results at a savings for your laboratory.COD MicroVials require just 2mL of sample for analysis. To use, add the sample to the vial, digest at 150°C for two hours and then read COD on your spectrophotometer.If you currently use COD vials, you can directly substitute MicroVials without any changes to your equipment or method. MicroVials are guaranteed to provide consistent and equivalent results with your current spectrophotometer and calibration curves—no method modification or instrument modification is necessary. COD MicroVials are laboratory-tested to ensure superior quality.Rigorous checks of each lot of MicroVials are performed by an independent laboratory. Vials are analyzed with NIST traceable standards at the lower MDL, then at 25% and 75% of the upper MDL. In addition, each lot of MicroVials is compared to reference vials of the true value for lot certification. Each lot analysis is performed twice, once with a Hach* DR 2010 spectrophotometer and once with a SPEC 21 spectrophotometer. All data points in each study must fall within an acceptance range of 95.0 – 105.0%. In addition to reagent analysis, each lot of glass vials is checked and certified for spectral quality before use. Teflon* caps and liners undergo lot-to-lot quality control to ensure cleanliness, leak free digestions and chemical inertness. Copyright Environmental Express, Inc., PSWCCOD12.10 Page 2E N V I R O N M E N T A L E X P R E S SCall 800.343.5319 or 843.881.6560 • www.environmentalexpress.comWet Chemistry: Chemical Oxygen Demand (COD)Environmental Express offers COD Standards in 1,000 and 10,000 ppm.Standards are made from primary standard grade potassium hydrogen phthalate and can be used with both the EPA approved vials and the mercury-free vials. COD standards have a 12-month shelf life and require refrigeration.Description Concentration Volume Catalog #COD Standard 1000mg/L 250mL B1030COD Standard 10000mg/L 250mL B1031 All CHEMETRICS Kits require the use of a Digestor Block. The A-0111 CHEMETRICS Digestor Block has 12 cell shafts to accommodate reaction cells 16mm ± 0.2. Reaction times can be set for 20, 30, 60 or 120 minutes with fixed temperature settings of 100, 120, 148 or 150°C. Other Specifications Include:• Overtemperature Protection• Heating time (with empty thermoblock) - from 25°C to 100°C, approximately 5 minutes - from 25°C to 120°C, approximately 7 minutes - from 25°C to 148°C, approximately 10 minutes• Temperature stability ±0.5 K• Set to operate at 115 voltsDescription Catalog # Digestor Block and US electric cable CHA-0201 COD-EXPRESS REMOVAL PROGRAM COD MicroVials contain acid, mercury and silver and must be disposed of properly. Environmental Express has partnered with US Waste, one of the world’s leading waste disposal companies, to provide a simple, convenient method of disposing of your used MicroVials. We offer five-gallon, 20-gallon and 55-gallon turnkey collection systems for disposal of spent vials. Plus we offer five-gallon and 20-gallon recycling options.COD-Express Removal Program OptionsDescription Catalog #Disposal Program, 5-gallon container B2005DDisposal Program, 5-gallon container, Non-Mercury Vials Only B2005D-NMRecycle Program, 5-gallon container B2005RDisposal Program, 20-gallon container B2020DDisposal Program, 20-gallon container, Non-Mercury Vials Only B2020D-NMRecycle Program, 20-gallon container B2020RDisposal Program, 55-gallon bucket B2055D IT’S EASY• Simply deposit your capped, used vials into the container. It is not necessary to empty their contents. The 5-gallon holds about 400 vials and the 20-gallon container holds approximately 1,700 vials.• Order a new container from Environmental Express when your container is nearly full.• When the container is full, contact US Waste Industries to schedule removal and provide any necessary transportation paperwork. This container is specifically for Environmental Express disposable COD Vials.