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Waste water parameter COD The chemical oxygen demand, ST-COD value, of water as determined by this dichromate method can be considered as an estimate of the theoretical oxygen demand, i.e. the amount of oxygen consumed in total chemical oxidation of the organic constituents present in the water. Setup CheckitDirect COD VARIO The Lovibond ® CheckitDirect COD VARIO test setup allows highly sensitive and precise water testing with minimum effort. It measures the ST-COD concentration by photometric detection employing a linear relationship between absorbance and concentration. After adding the sample to a Lovibond ® COD VARIO tube test (LR, MR according to ISO 15705:2002), it is heated in the reactor and then analysed in the CheckitDirect COD VARIO photometer. The COD-Setup comprises the CheckitDirect COD vario photometer, 25 tube tests for each of the two lower measuring ranges, a reactor for sample digestion, and a vial stand. COD-Setup Order code: 26 92 40 CheckitDirect COD VARIO complete with photometer, reactor ET 108, 2 sets of 25 vials each 0-150 mg/l and 0-1500 mg/l and vial stand COD-Setup Order code: 26 92 45 CheckitDirect COD VARIO as above, but with reactor ET 125 COD-Setup Order code: 26 92 46 CheckitDirect COD VARIO as above, but with reactor ET 125 SC** CheckitDirect COD VARIO With a measuring range from 0 to 15,000 mg/l O 2 , the Lovibond ® CheckitDirect COD VARIO photometer is suitable for waste water testing. Two LEDs light sources with long-term stability (λ 1 = 605 nm; λ 2 = 430 nm, according to ISO 15705:2002), a waterproof sample chamber, a large digital display, and the user-friendly keypad ensure maximum operating reliability and convenience. CheckitDirect COD VARIO Order code: 26 92 50 (CheckitDirect photometer only in case) General Catalogue July 2009 COD VARIO tube tests The Lovibond ® COD VARIO tube tests are available for the measuring ranges 0-150 mg/l O 2 , 0-1500 mg/l O 2 and 0-15000 mg/l O 2 . Their chemical properties and a 16 mm tube diameter is suitable also for use with Hach photometers. Tube tests Order code 0-150 mg/l O 2 (25 pc.) mercury free 2420710 (25 pc.) 2420720 (150 pc.) 2420725 0-1500 mg/l O 2 (25 pc.) mercury free 2420711 (150 pc.) mercury free 2420716 (25 pc.) 2420721 (150 pc.) 2420726 0-15000 mg/l O 2 (25 pc.) mercury free 2420712 (25 pc.) 2420722 (150 pc.) 2420727 Standard solutions Standard solutions are solutions with a defined concentration and are provided to check the operation methods and devices of the cuvette tests as well as the condition of optical filters and the instrument. Standard solutions 100 mg/l COD Order code: 2420803 500 mg/l COD Order code: 2420804 5000 mg/l COD Order code: 2420805 Technical data Optics temperature-compensated LEDs and photosensor amplifier in water proof sample chamber Ranges 0 – 150 mg / l O 2 ±3.5% *) 0 – 1500 mg / l O 2 ±3.5% *) 0 –15000 mg / l O 2 ±3.5% *) Power 9 V powerpack battery supply providing 40 hours operation Auto - OFF automatic switch-off Display backlit LCD (on keypress) Storage internal ring memory for 16 data sets Add. feature real time clock and date Calibration factory calibration and user calibration. Reset to factory calibration possible Dimensions 190 x 110 x 55 mm (L x W x H) Weight 0.4 kg (base unit) Environmental Temperature: 0 – 40 °C conditions rel. humidity: 30 – 90% (non condensing) CE- DIN EN 50081-1 conformity VDE 0839 part 81-1: 1993-03 DIN EN 50082-2 VDE 0839 part 82-2: 1996-02 * based on the use of potassium-hydrogenephthalate standards (DIN 38 409) COD - reactors ET 108 / ET 125 / ET 125 SC** Chemical digestion of the samples is a prerequisite for the calculation of COD levels. The required temperatures and reaction time are programmed using the membrane keypad on the front of the Lovibond ® reactors ET 108 / ET 125 / ET 125 SC**. All units are equipped with four temperature ranges (70/100/120/150 °C). At the end of the reaction time, the reactors automatically switch off and emit an acoustic alarm. COD-reactor ET 108 Order code: 2418930 COD-reactor ET 125 Order code: 2418938 COD-reactor ET 125 SC** Order code: 2418939 Technical data for COD-reactors Temperature: Timer: Heating: ET 108 / ET 125 / ET 125 SC**: 70/100/120/150 °C ± 0.3 °C 30, 60, 120 minutes and continuous operation, automatic switch-off with alarm ET 108: 270 Watts ET 125/ET 125 SC**: 400 Watts electronically controlled, with protection against overheating Heating-up time: approx. 10 minutes Power supply: Weight: ET 125: 230/115 V / 50-60 Hz ET 108 / ET 125 SC**: 230 V / 50-60 Hz ET 108: approx. 2.15 kg ET 125 / ET 125 SC**: approx. 3.60 kg Dimensions: ET 108: 214 x 133 x 110 mm (L x W x H) ET 125 / ET 125 SC**: 275 x 155 x 95 mm Approval: CE ** SC: Single current (only 230 V) ➲ Please see pages 88 and 89 for further information on our reactors Photometry 53
Tintometer ® -Group Photometer <strong>Highlights</strong> ■ Automatic wavelength selection ■ Easy handling ■ User interface in German, English, French, Spanish & Italian ■ Storage ■ more than 70 methods ■ 10 user defined methods ■ Infrared interface ■ Waterproof ■ Mobile Modern, mobile photometer for rapid, reliable water testing ➲ Please see pages 68 onwards for tests, ranges and reagents Applications ■ Waste Water ■ Drinking Water ■ Industrial Process Water ■ Scientific & Research ■ Governmental and Private Laboratories ■ Mobile Applications 54 Regularly updated information: www.tintometer.com General Catalogue July 2009
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