Yaxin-1151Biooxygen analyzer

This instrument belongs to high-precision dissolved oxygen testing equipment. Its characteristic is that it can measure the trace changes in dissolved oxygen concentration caused by cellular photosynthesis or respiration and calculate the photosynthetic rate or respiration rate.

Lightweight design, easy operation, wide adaptability, high accuracy, suitable for measuring oxygen release and consumption of biological tissues (leaves), cells (bacteria), and organelles (mitochondria).

CHARACTERISTICS

• High sensitivity - changes in biological oxygen concentration (ppm level)
• Real time measurement and plotting of oxygen concentration change curve
• Automatically complete the zero and full adjustment of the oxygen meter
• On site calculation of oxygen change rate for products

2、 Application Fields

This instrument can be used for photosynthesis oxygen release, mitochondrial respiration and cell metabolism, algal physiology, water ecological restoration, environmental water pollution control, fish energy metabolism, and medical research. Various scientific studies involving trace changes in biological oxygen concentration, such as research on animal and plant cell toxicity, mitochondrial dysfunction characteristics, dissolved oxygen in blood, algal stress respiration metabolism, and related enzymatic reactions.

3、 Measurement principle

Biooxygen analyzer（Dissolved oxygen tester）According to the Clark oxygen electrode principle, it consists of a cathode, an anode, and an electrolyte. Oxygen molecules diffuse into the electrolyte and form a measurement circuit with the cathode and anode. Under constant temperature, there is a linear relationship between the current in the circuit and the oxygen concentration in the solution, which is used to calculate the dissolved oxygen concentration.

4、 Instrument functions

1. Measurement function

Can measure dissolved oxygen concentration; Can measure solution temperature and atmospheric pressure

2. Calculation function

Calculate the photosynthetic/respiration rate of plants or the respiration rate of aquatic animals in the effluent based on the change in dissolved oxygen concentration;Can calculate the respiration rate of plants (microorganisms)

3. Automation function

Automatic monitoring of solution temperature and atmospheric pressure

Automatically complete the zero and full adjustment of the oxygen meter

Real time temperature correction of oxygen concentration values based on temperature changes in the solution

Automatic continuous measurement and calculation of oxygen release (photosynthesis) or oxygen consumption (respiration) rate

The collection time and quantity of oxygen concentration data can be set according to the different reaction rates of biological oxygen release (consumption)

4. Display function

Automatically display the oxygen concentration of the solution and display a list of continuously changing values of oxygen concentration

Simultaneously display solution temperature and atmospheric pressure

At the end of a measurement process, the oxygen release (consumption) rate is directly displayed (without the need to output data to the computer)

5. Storage function

Can classify and store all displayed content and perform classification queries

6. Power supply function

Two power supply methods: direct and alternating current

7. Auxiliary functions

The speed of the magnetic stirring rod can be set by the instrument host; Optional low heat and high strength artificial light source;

Optional constant temperature water system to control the temperature of the constant temperature water bath in the reaction chamber

5、 Technical parameters

1. Dissolved oxygen sensor

Type: Polarographic oxygen electrode;

Range: 0-20.00 mg/L;

Resolution: 0.01 mg/L;

Error: ± 0.03 mg/L to ± 0.04 mg/L (constant temperature); ± 0.1 mg/L to ± 0.2 mg/L (non constant temperature);

Response time:< 15 s；

Stability: ± 0.1 mg/L (within 24 hours);

Polarization voltage: 0.7V

2. Temperature sensor

Type: Thermistor; Measurement range: 0-50.0 ℃; Resolution: 0.1 ℃; Error: ± 0.2 ℃

3. Pressure measurement

Type: Integrated pressure sensor; Measurement range: 15-115 kPa; Resolution: 0.1 kPa; Error: ± 2.5% (0-85 ℃)

4. Host

Storage space: 192k storage capacity; Display: 240 × 128 LCD display
Data transmission: RS232 standard interface, RS232 to USB interface
Communication with external 220V connection; Host size: 20.5 × 25.0 × 18.5cm; Host weight: 1.0 kg

5. Reaction chamber
Reaction cup: Capacity 1-10mL, diameter 5cm, height 8cm

6. Blender
Speed: 0-2000 revolutions per minute (adjustable); Size: 160mm × 110mm × 40mm; Stirring element: plastic sealed magnetic rod

7. Power supply system

Battery: 10.8 V 6AH rechargeable lithium battery, with a range of 7-9 hours; Power adapter: 12.6V 3A lithium battery power adapter

6、 Procurement Guide

• It is not a typical industrial grade "dissolved oxygen meter", as industrial grade products cannot measure small changes in oxygen concentration.
• It is recommended to purchase light control accessories at the same time to facilitate the determination of photosynthetic oxygen evolution experiments.
• Dissolved oxygen film is a consumable, it is recommended to purchase multiple times at once.

7、 Frequently Asked Questions

1. Why do blades always float on the liquid surface?

Answer: The air in the blades was not completely extracted using the syringe method.

2. What should I do if the electrode surface turns black?

Answer: Please clean and polish the electrode according to the instructions in the manual.

3. Under what circumstances is it necessary to polarize the electrodes?

Answer: The use of electrodes requires polarization; After being idle for a long time, the electrode must be re polarized when it is reused; Re polarize after cleaning the electrode;

4. How long does it take to complete polarization?

Answer: Usually 10-12 hours.

5. Do we need artificial light sources in photosynthetic measurements?

Answer: It is necessary

6. How many times can a sample be retested?

Answer: After a sample is prepared, it can only be measured once and cannot be repeated because CO in the solution₂And O₂The dissolution amount is limited, and over time it can affect the demand for photosynthesis and respiration.

7. Precautions for operation?

Answer: The installation quality of the dissolved oxygen film on the electrode is directly related to the data quality.