CT-1Plus titrator for detecting mixed acid concentration in wet etching process

In the field of semiconductor and precision electronic manufacturing, the precise control of wet etching process is directly related to product quality and performance. As commonly used etching solution components, the concentration ratio of nitric acid and hydrofluoric acid directly affects the etching rate and effect. Therefore, rapid and accurate determination of mixed acid concentration has become a must-have for quality control in many enterprises.

The traditional manual titration method is not only cumbersome to operate and has poor repeatability, but also difficult to accurately determine the titration endpoint, especially in the complex system of continuous titration of hydrofluoric acid and nitric acid, which is prone to misjudgment and affects the accuracy of the results. To address the pain points in this industry,CT-1Plus titrator for detecting mixed acid concentration in wet etching processIt has emerged as an ideal tool for analyzing etching solution concentration due to its excellent stability, intelligent operation, and high-precision result determination.

Why choose CT-1Plus automatic potentiometric titrator?

CT-1Plus is a new generation potentiometric titrator optimized and upgraded based on the classic CT Plus series, focusing on providing users with a more efficient and reliable analysis experience. Its main advantages include:

-High precision liquid circuit system: equipped with a 20mL high-precision measuring tube, the minimum liquid addition volume is as low as 10 μ L, ensuring fine and controllable titration process, and high result resolution.

-Intelligent endpoint determination algorithm: adopting a good differential endpoint determination mode, customizable differential sensitivity (such as set to 200), effectively avoiding subjective errors, accurately capturing multiple titration endpoints, especially suitable for continuous titration of nitric acid and hydrofluoric acid.

-Efficient automation operation: Users only need to weigh the sample, place it in the sample cup, and the subsequent titration, stirring, endpoint judgment, data calculation, and report generation are all automatically completed by the instrument. A single test only takes about 2 minutes, greatly improving detection efficiency.

-Strong compatibility and adaptability: Can be configured with dedicated pH102 composite electrodes or antimony electrodes, resistant to hydrofluoric acid corrosion, suitable for complex chemical systems such as strong acids, mixed acids, and strong bases.

-Humanized operation and data management: The large touch screen makes method settings and result viewing clear at a glance, and test data is automatically stored for easy traceability and auditing, in compliance with quality control standards.

Typical application example: Concentration analysis of nitric acid/hydrofluoric acid etching solution

Actual testing has shown that CT-1Plus performs well in mixed acid system analysis:

-Testing method: acid-base potentiometric titration method

-Titrating agent: 0.5111mol/L sodium hydroxide standard solution

-Test conditions: Weigh about 0.55g of the sample, dissolve it in 50mL of pure water, and use the preset method for automatic titration.

-Test results:

-Sample 1: Nitric acid concentration 20.62%, hydrofluoric acid concentration 5.20%

-Sample 2: Nitric acid concentration 20.84%, hydrofluoric acid concentration 5.13%

-Average values: nitric acid concentration 20.72%, hydrofluoric acid concentration 5.17%

Good data repeatability and high accuracy meet the monitoring requirements of production processes.

Widely applicable scenarios

CT-1Plus titrator for detecting mixed acid concentration in wet etching processNot only suitable for concentration analysis of semiconductor etching solutions (HF/HNO3, HF/HCl, phosphoric acid, etc.), but also widely applicable to:

-PCB industry: concentration monitoring of etching solutions (copper chloride, ammonia water, etc.)

-Chemical and Electroplating: Analysis of Various Acid Wash and Plating Solution Components

-Environmental Protection and Water Quality: Detection of Acidity and Specific Ion Concentration in Wastewater

-Food and Medicine: Determination of pH and Content of Raw Materials and Finished Products

The CT-1Plus automatic potentiometric titrator, with its highly automated and intelligent design, frees analysts from complex and repetitive manual operations, effectively improving the accuracy and consistency of detection results and eliminating human errors. It is not only a powerful tool for laboratory analysis, but also a quality control node for achieving intelligent manufacturing and lean production.

Choosing CT-1Plus means choosing precision, efficiency, and reliability.

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If you need to obtain detailed technical information, application reports, or schedule a demonstration, please feel free to contact our professional technical team.