The stable operation and data reliability of ion chromatography highly rely on systematic daily maintenance and timely fault diagnosis. Following the principle of "prevention first" can reduce downtime. 1、 Core daily maintenance points for mobile phase management: Ultra pure water (resistivity ≥ 18.2M Ω· cm) and high-grade reagents must be used. All solutions need to be filtered through 0.22 μ m or 0.45 μ m filter membranes and subjected to ultrasonic degassing. Check the amount of rinsing solution daily to avoid pump emptying. Pump system maintenance: Check daily whether the pump pressure is stable and record the baseline pressure. Regularly (such as weekly) exhaust the pump head and clean or replace consumables such as check valves and sealing rings according to the manual requirements. Flow path and column protection: always ensure

The core competitiveness of ion chromatography columns lies in the innovation of stationary phase materials and the optimization of separation mechanisms. Modern stationary phase research and development has broken through the limitations of traditional ion exchange resins, achieving dual improvements in separation efficiency and selectivity through functional group modification, nanostructure regulation, and monolithic column technology.

Non methane total hydrocarbons (NMHC) refer to the sum of all volatile hydrocarbons other than methane, mainly including C2 to C8 hydrocarbons. As one of the main precursors of photochemical smog, NMHC can generate oxidants and aerosol particles under sunlight, posing a threat to the environment and human health. Accurately detecting NMHC concentration is of great significance for environmental monitoring and pollution control.

Rinse solution management Prepare the eluent with high-purity reagents, and the ultra pure water resistivity should be greater than 18.2MΩ · cm。 The rinse solution needs to be filtered through a 0.45 μ m membrane and subjected to ultrasonic degassing. It is recommended to replace the carbonate rinse solution every 3-5 days.

Gas chromatography-mass spectrometry (GC-MS) is one of the widely used instruments in modern analytical chemistry. It combines the efficient separation capability of gas chromatography (GC) with the high sensitivity and selectivity detection function of mass spectrometry (MS), achieving qualitative and quantitative analysis of various components in complex mixtures. It is widely used in fields such as environmental monitoring, food safety, drug analysis, forensic identification, petrochemicals, and life science research.

The core high precision secret of proportional double beam photometer lies in its mechanism of simultaneous measurement and real-time comparison, which effectively eliminates most error sources, thus achieving more stability and accuracy.

In many scenarios of industrial production and scientific research, precise control of moisture content often determines the success or failure of product quality and experimental results. As a classic moisture measurement device, halogen moisture analyzer has become an analytical tool in many fields due to its working principle and stable performance. It is like a precise ruler, measuring the tiny moisture content in substances, providing key data support for production control and technological research and development.

In the precise world of modern chemical analysis, gas mass spectrometry analyzers rely on their "smell" and "reasoning" abilities to accurately identify various components in mixed gases. It has become a tool in environmental monitoring, industrial production, and scientific research by converting substances into ions and separating them according to the mass to charge ratio.