In the field of customs inspection and testing, where the requirement for data accuracy is almost harsh, the purity of a single drop of water often determines the authority of a report. The Jinzhou Customs Comprehensive Technical Service Center undertakes the inspection, testing and appraisal of import and export commodities in its jurisdiction, as well as the chemical element analysis and harmful element detection of coal, mineral products, alloys, chemicals and oil products. Such trace-analysis experiments are extremely sensitive to water quality, and any trace impurities may interfere with test results. For this reason, the laboratory introduced the EXCEED series desktop ultra-pure water machine as the core pre-treatment equipment to guarantee the reliability of experimental data.

📅Service time: 2 years

🏫 User organization: Liaoning Jinzhou Customs

📍 Province/City: Jinzhou City, Liaoning Province

🧪 Equipment series: Exceed series

💧 Equipment Water Quality: RO Pure Water + UP Ultrapure Water

I. EXCEED Desktop Ultra-Pure Water Machine: Under the Integrated Design of"High-Purity Water Steward"

The EXCEED series is an ultra-pure water equipment built by AiKe (AK) specifically for laboratory scenarios, adopting"pretreatment + reverse osmosis (RO) + ion exchange + UV oxidation + terminal filtration"multi-stage purification process. Its core parameters are impressive: ultra-pure water resistivity stably reaches 18.25 MΩ·cm (25°C), TOC (total organic carbon) ≤ 10 ppb, heavy metals and soluble silicon<0.01 ppb, microorganism/endotoxin<0.001 EU/ml, fully complying with international and domestic Grade 1 water standards such as GB/T 6682-2008, ASTM, CAP and CLSI.

The desktop model is only about 400 mm wide × 450 mm deep × 480 mm high, weighing 25-65 kg, especially suitable for desktop deployment in space-limited inspection and testing laboratories. The equipment supports"two-in-one (dual-use)", and can simultaneously produce RO pure water (for vessel rinsing, conventional dilution) and UP ultra-pure water (for trace analysis, chromatography and mass spectrometry injection), with water flow rates of 1.8 L/min and 1.5 L/min respectively, meeting the needs of multi-station parallel water intake.

II. Why Do Customs Laboratories Need EXCEED-Grade Ultra-Pure Water?

The core challenge of customs inspection lies in"trace"the word. Taking the detection of harmful elements in mineral products as an example, if the water contains trace heavy-metal ions, it may directly cause the test result deviation to exceed 5% in precision instrument analyses such as ICP-MS and atomic absorption spectroscopy (AAS), thereby affecting the accuracy of commodity qualitative grading. For the determination of chlorine, sulfur, mercury and other elements in coal, water purity directly affects the detection limit and repeatability of the national-standard method.

EXCEED equipment's three-channel, three-display, three-detection instrument can monitor inlet conductivity, RO pure-water conductivity and UP ultra-pure water resistivity in real time, making the water-quality status clear at a glance. The equipped 185 nm + 254 nm dual-wavelength UV digester can effectively oxidize and degrade organic matter in water, preventing ghost peaks or baseline drift in chromatographic analysis; the 0.22 μm capsule terminal microfilter prevents bacteria and particles from entering the injection system, protecting precision instruments. In addition, the equipment's functions such as power-on self-check, water-shortage protection, automatic RO membrane flushing and consumable-life reminders enable stable operation unattended, fitting the characteristics of long-term continuous operation of customs laboratories.

III. Key Points for Selecting a Laboratory Ultra-Pure Water Machine

When configuring an ultra-pure water machine, customs and quality-inspection laboratories usually need to comprehensively consider the following three dimensions:

In addition to the hard indicators in the table, attention should also be paid to inlet water-quality adaptability. If the municipal tap water TDS (total dissolved solids) in the Jinzhou area is on the high side, models equipped with enhanced pretreatment (such as nanofiber PP cotton, anti-fouling activated carbon) should be selected to extend the lifespan of the back-end RO membrane and purification column. In addition, online water-quality monitoring and circulation-reflux functions can effectively avoid secondary pollution caused by dead water in pipelines, which is particularly important for the long-term stability of test data.

IV. Professional Water-Treatment Service Provider: Tang's Corning AiKe (AK)'s 30-Year Technical Heritage

The stable supply of high-end laboratory water depends not only on the equipment itself, but also on the technical support of a professional service provider. Sichuan Chengdu Tang's Corning AiKe Water Purifier Co., Ltd. has been deeply engaged in the water-treatment industry for nearly 30 years, serving 70,000+ customer cases and obtaining 110+ qualifications and patents, and is a long-established enterprise in the domestic laboratory pure-water field. Integrating R&D, manufacturing, sales and service of wastewater treatment equipment, its main products include industrial pure-water equipment, laboratory pure-water/ultra-pure-water machines, laboratory wastewater treatment equipment, RO ultra-pure-water machines, intelligent ultra-pure-water systems and pure-water supply systems, providing professional and reliable complete water-treatment solutions for customs, quality inspection, universities, pharmaceutical, chemical and other industries.

Taking the AiKe Exceed series as an example, its technical team has provided equipment installation, twice-yearly free on-site maintenance and consumable replacement services for national key research units such as PetroChina Lanzhou Chemical Research Center and PowerChina Guiyang Engineering Research Institute. Through standardized processes such as replacing anti-fouling filter elements, cleaning RO membranes and calibrating TOC monitoring modules, it ensures that the equipment's ultra-pure water resistivity remains stably above 18.2 MΩ·cm, providing reliable guarantee for high-precision testing experiments.

For detailed configuration and selection scheme of the EXCEED series ultra-pure water machine, please contact Tang's Corning at phone: 185 0288 4972.

V. Summary

For laboratories such as the Jinzhou Customs Comprehensive Technical Service Center that undertake statutory inspection of import and export commodities, trace element analysis and hazardous substance identification tasks, a desktop ultra-pure water machine with stable performance is the "invisible infrastructure". With its high-purity output of 18.25 MΩ·cm, compact desktop layout, dual-output design and complete intelligent monitoring functions, the EXCEED series can precisely match the multiple needs of customs laboratories for water quality, space and O&M efficiency.

The selection process must closely follow the experimental scenario and comprehensively evaluate from four aspects: water-quality grade, water volume, inlet conditions and total cost of ownership (TCO), avoiding"over-configuration"or"under-configuration". Equally important is choosing a professional supplier with long-term technical accumulation and a complete after-sales service system. Relying on nearly 30 years of industry heritage and a nationwide customer service network, Tang's Corning AiKe can provide various laboratories with one-stop water-treatment solutions from equipment selection, installation and commissioning to lifetime maintenance, and is a reliable partner for high-end testing scenarios such as customs, research and quality inspection.