Pursuit of Excellence, Quality First
——Xingsen Carbon Factory Conducts Specialized Performance Testing on Activated Carbon

Recently, to further ensure product quality and enhance market competitiveness, Xingsen Carbon Factory conducted a comprehensive and in-depth series of performance tests and experiments on activated carbon. These tests rigorously evaluated key indicators of the activated carbon, fully demonstrating the factory’s relentless pursuit of excellence and strict control over product quality.

At the testing site, a professional technical team meticulously followed international (ASTM) and industry standards to conduct precise measurements of core indicators such as adsorption performance, strength, and particle size distribution. Adsorption performance, a critical metric for assessing activated carbon quality, was tested using a combination of dynamic and static adsorption methods. Technicians carefully prepared solutions of varying concentrations to accurately determine the adsorption capacity and rate for different substances.

For example, in testing the iodine adsorption value—a benchmark for small-molecule adsorption—technicians followed national standards, which require high-quality activated carbon to achieve ≥800 mg/g. After multiple rounds of testing, the sampled batch showed an average iodine adsorption value of 950 mg/g, far exceeding industry benchmarks, indicating exceptional adsorption capabilities. Throughout the experiments, factors such as temperature and pH were tightly controlled, with temperature variations kept within ±1°C and pH fluctuations within ±0.1 to ensure data accuracy.

Strength testing was another focal point, as high-strength activated carbon resists breakage and wear, ensuring longevity in practical applications. Using specialized equipment, the team simulated real-world stress conditions to evaluate abrasion resistance and compressive strength. Industry standards require abrasion resistance ≥90%. In the tests, samples were placed in a rotating drum abrasion device, and after a set duration, the remaining material was sieved and weighed. The tested batch achieved an average abrasion resistance of 93%. For compressive strength, individual particles were subjected to vertical pressure. While the industry standard is ≥80N per particle, the tested samples averaged 95N per particle. Products failing to meet these standards were rigorously screened out for reprocessing or rejection.

Particle size distribution, critical for application suitability, was analyzed using advanced laser particle analyzers. Standards stipulate that ≤15% of particles may remain on the largest sieve, and ≤5% may pass through the smallest sieve. The tested batch fully complied, ensuring versatility across applications.

Throughout the process, Xingsen maintained a scientific and meticulous approach. All data underwent repeated verification, with questionable results retested. Third-party agencies were also enlisted to review select findings, ensuring impartiality and authority.

Key Test Results:

Iodine Value (ASTM D4607): 800–1200 mg/g

Methylene Blue (ASTM D6646): 100–300 mg/g

Carbon Tetrachloride Adsorption (GB/T 7702.6): 40–70%

Ash Content (ASTM D2866): ≤5% (≤3% for food-grade)

pH (ASTM D3838): 6–10

A Xingsen spokesperson stated: “Product quality is our lifeline. Strict control over activated carbon performance is both a promise to our clients and the foundation of our market presence. These tests not only clarified current quality levels but also provided data to optimize production and upgrades. Moving forward, we will uphold these high standards to deliver superior, reliable products.”

This initiative reflects Xingsen’s commitment to quality and corporate responsibility. Guided by this ethos, Xingsen Carbon Factory is poised to achieve new milestones in the industry, creating greater value for customers and society.