COD-4DA
The instrument mainly measures the level of concentration of COD, but also with determination of ammonia nitrogen, total phosphorus function.
COD-4DA multi-function water quality analyzer is our fifth generation of products, entirely based on "quick digestion spectrophotometry (HJ / T 399-2007)" design, suitable for many domestic and international testing standards. The instrument mainly measures the level of concentration of COD, but also with determination of ammonia nitrogen, total phosphorus function, the instrument uses a high-resolution display, the Chinese operation interface, all Chinese operation buttons, user-friendly operation prompt for the rich character prompt steps , which greatly facilitates the user, simple operation, will operation by seeing the screen prompting, the instrument has advantages ,such as a high degree of automation, stable performance, easy operation, accurate measurement, the sample operating cycle is short, low power consumption. Instrument has value direct reading, auto-zero, curve storage, automatic printing, data storage functions. It can be widely used in a variety of industry wastewater, city wastewater, sewage and lakes surface water, is the ideal tool for environmental water quality monitoring .
Features:
(01) Direct determination of the high and low level concentration of chemical oxygen demand (COD), ammonia nitrogen, direct reading total phosphorus concentration;
(02) Large-screen displays measurement results;
(03)One button switch measurement parameters;
(04) Memory 400 curve, standard curve, no need adjustment, can be used directly, extended curve 400 can be freely applied under different people, different environments, different waste water and other conditions;
(05) The instrument automatically calculates the stored standard curve according to the standard sample;
(06) Can store 10,001 measurements at precise data (date, time, absorbance measurement results);
(07) Print current and historical data and all data is stored;
(08) Digestion power automatic adjustment with the number of load, intelligent temperature control, with delay protection;
(09)Equipped with a hood made of the transparent heat-resistant material, to ensure safe and reliable experiment;
(10) Automatic thermostat reminders, automatic countdown reminder, timing can be adjusted and saved;
(11) Room temperature ~ 190 ℃ digestion temperature adjustment range, wider compatibility;
(12)Digestion 12 water samples simultaneously
Measurement item | COD | Ammonia chloride | total phosphorus |
Measurement range | 2-10000mg/L | Ammonia chloride | 0.02-20mg/L |
Measurement accuracy | COD<50mg/L,≤±10% | ≤±10% | ≤±5% |
The minimum detection limit | 0.1mg/L | 0.01mg/L | 0.01mg/L |
Measuring time | 20 min | 10-15 min | 35-50min |
Batch quantity | 12 pcs water sample | 12 pcs water sample | 12 pcs water sample |
Repeatability | ≤±5% | ≤±5% | ≤±5% |
Light source life | 10W hours | ||
Optical stability | ≤0.001A/10min | ≤0.001A/10min | ≤0.001A/10min |
Anti chlorine interference | [Cl-]﹤1000mg/L no impact | - | - |
Colorimetric method | Colorimetric plate | Colorimetric plate | Colorimetric plate |
Storing data | 1W | ||
Number of curves | 400pcs | ||
video mode | LCD | ||
Power supply mode | 220V AC Power | ||
Digestion temperature | 165℃±0.5℃ | - | 120℃±0.5℃ |
digestion time | 10min | - | 30min |