Which domestic TOC total organic carbon analyzer is good

Pure water TOC total organic carbon analyzerThe total organic carbon (TOC) analyzer adopts the world's advanced dual wavelength red external oxidation technology, which has high accuracy and sensitivity. High performance CPU, touch screen intelligent control, with offline analysis and online analysis optional functions, equipped with an external printer, humanized design concept, no need to open the chassis to replace UV lamps and pump tubes, simple and convenient operation, realizing the localization of analytical instruments.

◆ Complies with Appendix VIII R of the Chinese Pharmacopoeia 2010 edition for the determination of total organic carbon in pharmaceutical water, meeting the requirements of the Pharmacopoeia for instruments: ① TOC=TC-TIC, ② system suitability test, ③ detection sensitivity (equal to or less than 0.001mg/L).

Pure water TOC total organic carbon analyzerIt adopts the instrument method and can be divided into combustion oxidation non dispersive infrared absorption method, conductivity method, wet oxidation non dispersive infrared absorption method, etc. according to different working principles. The combustion oxidation non dispersive infrared absorption method has a simple process, good reproducibility, and high sensitivity, and is widely used both domestically and internationally. The determination of TOC by combustion oxidation non dispersive infrared absorption method can be divided into two types: differential method and direct method. Due to the fact that some carbon containing organic compounds are not easily burned and oxidized at high temperatures, the measured TOC values are often slightly lower than the theoretical values.

Our lives cannot do without water. If a considerable amount of organic pollutants exist in water, it will directly affect the quality of the water and pose a threat to our lives and production. Therefore, monitoring water and wastewater is increasingly attracting people's attention. The detection of total organic carbon (TOC) content in water bodies is increasingly attracting attention. It is a comprehensive indicator that represents the total amount of organic matter in water bodies based on carbon content. The determination of TOC generally adopts the combustion method, which can completely oxidize the organic matter in the water sample and can be directly used to indicate the total amount of organic matter. Therefore, it is regarded as an important reference indicator for evaluating the degree of organic pollution in water bodies.

Drawing of calibration curve
Dilute the standard solution step by step into different concentrations of organic carbon and inorganic carbon standard series solutions, inject them into the combustion tube and reaction tube respectively, measure the absorption peak height on the recorder, plot it against the corresponding concentration, and draw the calibration curve.

Water sample determination
Take an appropriate amount of water sample and inject it into the TOC instrument for measurement. The peak height obtained can be read from the standard curve to determine the corresponding concentration, or the instrument can automatically calculate the result.

Product Features:

◇ 1. The instrument adopts a portable design, which is easy to use and convenient to move to the sampling point.

◇ 2. Adopting embedded system and touch screen design, pure Chinese operation is convenient and easy.

◇ 3. Design and conduct testing for the total organic carbon content of pharmaceutical water (TOC content below 1000ppb).

◇ 4. Equipped with a large amount of storage space, capable of storing a large amount of test data.

◇ 5. Print in Chinese and output test parameters and results.

During use, storage, and replacement, no gas or reagents are required, and there are no moving parts, reducing maintenance and repair costs.

When the concentration of the test sample exceeds the specified limit, the instrument can automatically sound an alarm and output a control signal.

◇ 8. In accordance with the testing plan specified in the Chinese Pharmacopoeia CP2015, IQ/OQ/PQ services can be provided.

Performance specifications:

Measurement range: 0.001mg/L to 1.0mg/L.

Accuracy: ± 4% test range.

Resolution: 0.001mg/L.

Analysis time: Continuous analysis.

Response time: within 4 minutes.

Detection limit: 0.001mg/L.

◇ Sample temperature: 1-95 ℃.

Repetitive error: ≤ 3%.

Power requirement/function: 220V.

◇ Display screen: Color touch screen.

Main features:

◇ 1. High precision, high sensitivity, and easy operation.

◇ 2. Humanized operation interface, with one click operation function and automatic pipeline cleaning function.

◇ 3. High performance CPU, touch screen design, large 640 * 480 dot matrix true color display.

◇ 4. No need to open the chassis to replace the UV lamp and pump tube.

◇ 5. The detection upper limit can be set and has an automatic upper limit alarm function.

◇ 6. Equipped with RS232 data interface, historical data can be stored for 6 months.

◇ 7. Offline detection and online detection are optional.

◇ 8. It has printing function

Main Configuration

◇ Host: One unit

Touch screen: (embedded in the instrument)

◇ Micro printer: one unit

Injection tube: one

◇ Power cord: one set

Product manual: one copy

Product Qualification Certificate: One copy

Product packing list: one copy

Testing methods and principles

The National Pharmacopoeia Committee recommends the use of online and offline methods in Part II of the 2010 edition of the Pharmacopoeia of the People's Republic of China

Two offline testing methods are available, and the operation method for system adaptability testing is also provided. Simultaneously testing the instrument for total organic carbon

The device also requires the ability to distinguish between inorganic carbon and organic carbon; And it can exclude the influence of inorganic carbon on total organic carbon

Sound; Secondly, it should meet the requirements of system adaptability testing; The instrument should have sufficient detection sensitivity.

To detect the concentration of organic compounds in a sample, it is necessary to decompose the organic molecules and convert them into measurable monomers

In molecular form, it is necessary to oxidize organic matter into carbon dioxide and measure the generated carbon dioxide. eye

There are four methods for pre oxidation: first, combustion method; 2、 Photooxidation method; 3、 Wet oxidation; 4、 Photochemical method.

There are two methods for testing organic carbon after oxidation: differential method and direct method.

Schematic diagram of the back plate of the analyzer

The expression for subtraction is TOC=TC-IC, which means total organic carbon is the difference between total carbon (TC) and inorganic carbon (IC).

The oxidation method used by the TA-1.0 analyzer is photooxidation:

H2O+hn（185nm）‐> OH· + H· OH· + 有机物‐> CO2+H2O

The measurement method for carbon dioxide is subtraction: TOC=TC-IC

Usage and operation methods

Start the detection and count the number of detections. After the detection is completed, display the results of the next detection, and automatically save the results of several detections in the query record. The setting method for the detection frequency is: use the "Select" key to move the cursor, use the "Set" key to modify the number, press the "OK" key to confirm, and enter the analysis interface. *Perform four flushing processes.