Features
- 01 The BOD analyzer experimental process has no pipeline design, which avoids the disadvantages of pipeline aging, air leakage, etc.
- 02 It can measure 6 water samples at the same time, with independent test terminals, and new measuring components can be added at any time during the detection process.
- 03 BOD analyzer directly reads BOD concentration value, no need to calculate sealing cup (6 pieces)
- 04 The BOD analyzer has a mercury-free pressure differential design, high accuracy, no conversion required, and ensures the safety and health of experimenters.
- 05 The BOD analyzer has a selectable measurement range. When the water sample concentration is lower than 4000g/L, no dilution is required.
- 06 BOD Analyzer The analyzer automatically records the measurement data, 60 sampling points can be selected in one test cycle, and the test data is more accurate
- 07 The culture cycle of BOD analyzer is adjustable and can be selected according to needs
- 08 The BOD analyzer terminal is equipped with a large-capacity battery with a battery life of more than 2 years. During the test, the external environment is not affected by short-term power outages.
- 09 BOD analyzer has a large LCD screen, which is intuitive and clear, and easy to select items.
Working principle
BOD Analyzer TP3120 Working Principle
- Biochemical oxygen demand (BOD5) is defined as the amount of dissolved oxygen consumed by aerobic microorganisms in water. When the sample is placed in an incubator and cultured at 20°C for five days, the consumed dissolved oxygen content is measured to determine the BOD5 value of the water sample. In this process, the only gas carbon dioxide that overflows from the water sample is absorbed by sodium hydroxide (or potassium hydroxide). At this time, the amount of air pressure reduction in the culture bottle is equivalent to the dissolved oxygen content consumed by the microorganisms, that is, the BOD5 value of the water sample is proportional to the degree of reduction in air pressure in the bottle, so the BOD5 value can be determined by the air pressure reduction value. Increasing or decreasing the amount of sample taken can increase or decrease the pressure reduction value. The instrument calculates the biochemical oxygen demand BOD5 value of the sample by monitoring the changes in air pressure in the culture bottle.
- BOD analyzer is a powerful and easy-to-use precision instrument. Laboratory water quality analyzer . It complies with GB/T7488-1987 “Determination and inoculation method of five-day biochemical oxygen demand (BOD5) of water quality”, and can be widely used for BOD detection of surface water, ground water, sewage and industrial wastewater.
Technical indicators
| Measuring range | 0-4000mg/L (direct measurement) |
| Measurement accuracy | ±8% |
| Resolution | 0.01mg/L |
| Sampling point | ≤60/cycle |
| Measuring principle | Mercury-free differential pressure method |
| data storage | Can store 10 years of test data |
| Stirring | Program control, magnetic stirring |
| Measuring cycle | 1 day to 30 days |
| Measurement quantity | Independent 6 groups of tests |
| Culture bottle volume | 580mL |
| Cultivation temperature | 20±1℃ |
| Battery Life | ≥ 2 years |
| Working power supply | AC220V±10% 50Hz±10% |
| rated power | 10W |
Ordering Guide
- Accessories Guide
Culture bottles (6 pieces)/stirring bars (6 pieces)/sealed cups (6 pieces)/BOD reagent (1 set)/culture bottle rack/pH test paper
- Precautions
1. When the BOD analyzer has obvious faults, the user should not open it for repair by himself, please contact the manufacturer in time.
2. When not testing, the BOD analyzer should be placed in a dry environment to avoid unstable measurement caused by moisture.