The value of scientific instruments goes beyond "buying the equipment"; it’s about using it well.

On January 22, the CIQTEK "Care & Innovation" service team visited the Analysis and Testing Center at South China Normal University (SCNU) for an in-depth, specialized service activity.

Led by Senior Application Engineer Hongyan Shen and Senior Service Engineer Dong Wang, the expert team conducted a full-scale instrument inspection and provided customized advanced EPR training, supporting research in physics, chemistry, and materials science. Their professional service is helping accelerate cutting-edge research in the Greater Bay Area.

 

Safeguarding Critical Research Instruments

SCNU's Analysis and Testing Center is a key platform for high-level research, handling multi-disciplinary analysis and testing tasks. The CIQTEK EPR spectrometer installed at the center is a core instrument for analyzing material microstructures and monitoring free radical dynamics, operating under heavy research workloads.

To ensure the instrument remains at peak performance, the CIQTEK team responded promptly and dispatched a "service + application" expert duo. They focused on daily maintenance challenges and advanced application needs, providing dual-layer support for instrument stability and efficient utilization.

 

 

In-Depth Inspection: Equipment Health is the First Line of Defense

"Stable operation is essential for reliable data."

Upon arrival, Senior Service Engineer Dong Wang and the team immediately performed a meticulous instrument health check. They inspected the magnet system and water cooling, calibrated all key parameters, and maintained low-temperature accessories, following CIQTEK's standard operating procedures (SOPs).

The team also provided preventive maintenance advice to ensure long-term "zero-fault" operation, giving researchers confidence for ongoing and future experiments.

 

Customized Advanced Training: Bridging Theory and Practice

Hardware maintenance strengthens research, while application training strengthens scientific insight.

Senior Application Engineer Hongyan Shen delivered a highly practical, custom advanced EPR training to SCNU staff and students. The training addressed key research directions, including photocatalysis, material defect analysis, and advanced oxidation studies, combining theory and hands-on practice.

Shen covered EPR principles, experimental details, parameter optimization, sample testing, and complex spectrum analysis, providing case-based explanations tailored to real research scenarios. Students and staff actively engaged in discussions, following practical demonstrations and one-on-one problem solving. The session translated abstract theory into immediately usable lab techniques, earning high praise from the center.

 

 

Professional Service Recognized, Empowering High-Quality Research

SCNU faculty commented:

"CIQTEK’s service response is fast and highly professional. This customized training gave us a new understanding of EPR capabilities and applications. It improves testing efficiency and provides strong support for high-level research and publications."

 

"Care & Innovation" in Action

The "Care & Innovation" program is more than a slogan. It is reflected in every instrument delivery, technical service, and training session.

CIQTEK will continue to uphold its customer-centric philosophy, building professional, standardized, and customized service teams. By combining on-site visits and centralized training, CIQTEK strengthens technical service capabilities and helps scientists make instruments their research "sharpest tools", empowering breakthroughs in cutting-edge science.

 

About CIQTEK Service Solutions

CIQTEK provides comprehensive technical service for EPR, SEM, TEM, and other advanced instruments, including:

• Full instrument health inspections and preventive maintenance

• Custom advanced training tailored to real research applications

• On-site technical support and consultation for workflow optimization

 

Through professional, responsive services, CIQTEK helps researchers maximize instrument value and accelerate scientific innovation.

 

CIQTEK is heading to Analytica 2026 with a working SEM on the show floor, giving visitors the chance to see real imaging in action while exploring our NMR and BET analytical solutions in person.

 

From March 24 to 27, 2026, CIQTEK will join researchers, lab professionals, and industry partners at Analytica 2026 in Munich, Germany. You can find us at Booth A2.234 at the Trade Fair Center Messe München.

Instead of just showing brochures or videos, we are bringing a real instrument. Visitors can stop by, see how the system runs, and talk directly with our team about their applications and lab needs.

 

A Real SEM Running at the Booth

The highlight this year is our SEM3200 tungsten filament scanning electron microscope, operating live throughout the exhibition.

Visitors can:

• Watch real samples being imaged live
• Try the SEM interface and see how easy operation can be
• Talk with application specialists about imaging challenges
• Explore how SEM can fit everyday lab workflows

The SEM3200 is built for routine lab use, combining stable performance with practical operation, making it a strong fit for universities, research centers, and industrial labs.

 

More Than Electron Microscopy

CIQTEK will also introduce visitors to our broader analytical portfolio, including:

NMR Spectrometers, supporting chemical and materials analysis for both research and teaching environments.

BET Surface Area & Pore Size Analyzers, widely used in materials science, catalysis, energy research, and porous material studies.

Together, these tools help laboratories handle both imaging and material characterization more efficiently.

 

Let’s Meet in Munich

If you are visiting Analytica 2026, come by Booth A2.234 to see live SEM imaging and chat with our team about your applications and future plans.

Whether you work in research or industry, we would love to connect and explore how CIQTEK instruments can support your work.

 

See you in Munich!

 

 

March 27, 2026 – Evanston, Illinois, USA

CIQTEK is excited to join the Annual Spring Meeting of the Midwest Microscopy and Microanalysis Society (MMMS) on March 27, 2026, hosted at Northwestern University in Evanston, Illinois. This gathering is a must-attend event for researchers, microscopists, and industry professionals across the Midwest, providing a platform to share the latest in electron microscopy, microanalysis, and cutting-edge lab techniques.

 

Meet CIQTEK's Electron Microscopy USA Team

Our US local team will be on-site to meet attendees, discuss real-world lab challenges, and share insights into CIQTEK's full line of electron microscopy solutions. From routine SEMs to advanced field-emission systems, CIQTEK designs instruments that deliver reliable imaging, high performance, and practical usability for academic, industrial, and research labs.

Visitors will have the chance to:

• Learn about our SEM, TEM, and FIB-SEM platforms

• Discuss workflow improvements for microscopy and microanalysis

• Explore solutions for materials science, industrial inspection, and research labs

• Get hands-on advice from our application specialists

Contact CIQTEK USA Team: info.usa@ciqtek.com

 

Why Attend MMMS

The MMMS Spring Meeting is more than a conference; it’s a chance to see the latest technology in action, exchange ideas with peers, and explore tools that can make everyday lab work easier and more efficient. CIQTEK is proud to be part of this vibrant microscopy community, supporting innovation and practical solutions for researchers across the Midwest.

 

Come meet us in Evanston on March 27!

Explore our SEM lineup, chat with our team, and discover how CIQTEK instruments can support your microscopy and microanalysis needs.

 

 

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CIQTEK EASY-H 2420 high temperature and high pressure gas adsorption analyzer has been successfully delivered and installed for Saudi Aramco, marking another milestone in CIQTEK's growing cooperation with global energy research leaders.

The project moved smoothly from factory acceptance to on-site installation, and the customer expressed strong satisfaction with both the instrument performance and CIQTEK's professional support throughout the process.

 

Successful Installation in Saudi Arabia

 

Customer Visit and Factory Acceptance in Hefei

Before shipment, experts from Saudi Aramco visited CIQTEK headquarters in Hefei, China, to personally conduct the factory acceptance test of the EASY-H 2420 system.

During the visit, the customer team worked closely with CIQTEK engineers to review system performance, run tests, and experience the instrument operation firsthand. The discussions were productive and practical, covering application needs, workflow optimization, and future cooperation opportunities.

The Aramco team praised the instrument stability and ease of operation, as well as the professionalism and responsiveness of CIQTEK's technical team. The smooth acceptance process helped ensure the system was ready for shipment with confidence.

 

Successful Installation in Saudi Arabia

In February 2026, the system was successfully installed and commissioned at the customer site in Saudi Arabia. CIQTEK engineers provided installation support and user training, helping local operators quickly become comfortable with the system.

Following installation, the customer reported that the instrument performance met expectations, and they appreciated CIQTEK’s fast response, professional guidance, and smooth coordination throughout the delivery process.

The project reflects CIQTEK’s commitment not only to reliable instrument design, but also to strong global service support and customer collaboration.

 

 

About Saudi Aramco

Saudi Aramco is the national petroleum and natural gas company of Saudi Arabia and one of the world's largest integrated energy and chemicals companies. Aramco plays a major role in global energy supply and continuously invests in advanced technologies to improve efficiency and sustainability in energy production and research.

The deployment of advanced adsorption analysis tools supports ongoing materials and energy research activities within the organization.

 

 

About CIQTEK Gas Adsorption Solutions

CIQTEK provides a full range of gas adsorption and pore structure analysis instruments supporting research and industrial applications in energy, materials science, catalysis, and porous materials development.

The product portfolio includes:

• High-pressure and high-temperature adsorption analyzers, such as the EASY-H series, designed for advanced gas adsorption research under realistic operating conditions.

• Surface area and pore size analyzers, widely used for BET analysis and routine material characterization.

CIQTEK continues to support global researchers and industrial laboratories with reliable analytical tools and responsive technical service.

 

Looking Ahead

The successful delivery to Saudi Aramco highlights CIQTEK's growing role as a trusted supplier of advanced material characterization instruments worldwide. The company looks forward to continuing cooperation with global partners and supporting innovation across energy and materials research fields.

 

Picking the Right Terminal Blocks for Your Industrial Work

 

This article looks at what you need to think about when picking terminal blocks for industrial use. We'll go over five main things: how much current they can handle, how they connect, where they'll be used, what certifications they have, and how easy they are to maintain and expand. The goal is to help you make your electrical systems safer and more reliable.

 

Why does picking the right terminal block matter so much?

 

Terminal blocks are key spots for sending current in things like industrial control systems, distribution boxes, new energy equipment, and automated production lines. If you pick the wrong ones, they can overheat, cause voltage drops, mess up signals, and even shut down your system. They might be small, but they're super important for keeping your electrical systems running smoothly.

 

I. Figure Out the Real Current You'll Be Using

 

A lot of projects just look at the rated current of a terminal block, but that's usually based on perfect lab conditions. Things get hotter inside a control cabinet, terminals are packed close together, and there's not much air flow, which all adds to the heat.

 

It's a good idea to add a 20%-30% buffer to the current capacity when you're choosing. So, if your actual current is 16A, you should go for terminal blocks rated for 20A or more.

 

II. Pick the Right Connection Type for Your Situation

 

1. Screw-type: Great for high current and power systems. They lock on really tight, but you need to check the screws every so often to make sure they're still tight.

2. Spring-type: Good for places with a lot of vibration. They keep constant pressure, don't need any upkeep, and are very stable.

3. Plug-in: Ideal for PCBs and modular systems. They're quick to install and easy to swap out.

 

III. Think About Where They'll Be Installed

 

If you're using them in places that are hot, humid, dusty, or have corrosive chemicals, go for tinned copper conductors and insulation that's rated UL94 V-0 for flame resistance. If needed, think about using a terminal system with good protection ratings.

 

IV. Check for the Right Certifications

 

If you're exporting or working on international projects, you'll usually need UL, CE, IEC, or RoHS certifications. If you don't use certified products, your project might get rejected or you could run into legal trouble.

 

V. Plan for Maintenance and Future Growth

 

When you're picking parts, don't just think about what you need right now. Also, think about future expansions, how easy they are to maintain, and how standardized they are. Modular designs can save you money on long-term operation and maintenance.

 

There's no one-size-fits-all terminal block. The best one is the one that fits your needs the best. By planning for enough current, picking the right connection type, using high-quality materials, and making sure you have the right certifications, you can really make your systems more stable and safe.

 

 

How to choose the right terminal blocks for your project? We provide an in-depth analysis of five key factors: current and voltage, installation method, environmental adaptability, material structure, and certification standards, to help engineers and purchasing personnel make precise selections and reduce failure rates and maintenance costs.

 

I. Matching Electrical Parameters: Current, Voltage, and Safety Margin

1. Rated Current

When selecting terminal blocks, it's crucial to consider not only the nominal current of the equipment but also peak current, long-term load, cable cross-sectional area, and the impact of ambient temperature.  It is recommended to leave a 20%-30% current margin to ensure stable long-term operation.

2. Rated Voltage

Different applications have different voltage requirements: low-voltage control systems typically use 300V, industrial power systems often use 600V or higher, and new energy systems can reach 1000V.  Creepage distance and electrical clearance design should also be considered.

 

II. Wiring Method Selection: Screw-type or Spring-type?

1. Screw Terminal Block

Suitable for high-current applications, such as power distribution cabinets and industrial control boxes, but requires regular inspection to prevent loosening.

2. Spring Terminal Block

Suitable for automation control systems and vibrating environments, offering maintenance-free and vibration-resistant advantages.

3. Pluggable Terminal Block

Suitable for PCB connections and modular designs, facilitating installation and maintenance.

 

III. Environmental Adaptability: Do Not Underestimate the Working Environment

When selecting connectors, working temperature, protection rating, and vibration conditions must be considered. For high-temperature environments, high-temperature resistant nylon (PA66) material is recommended. In dusty or humid environments, attention should be paid to the IP protection rating and corrosion resistance.

 

IV. Material and Structural Design: Determining Long-Term Stability

High-quality terminal blocks typically use copper or tin-plated copper conductors and insulation materials that meet the UL94 V-0 flame retardant rating.  Oxidation and corrosion resistance directly affect long-term operational safety.

 

V. Certification and Compliance: A Crucial Aspect for Export Projects

Common international certifications include UL, CE, TUV, IEC, and RoHS. For export projects, certification not only affects customs clearance but also relates to project acceptance and legal compliance.

 

When selecting components, engineers should consider ease of maintenance, modular expandability, and inventory standardization.  Proper terminal selection not only improves system stability but also reduces long-term maintenance costs. Stable connections are fundamental to reliable system operation; although small, terminal blocks are crucial connecting components in electrical systems. Correct selection can reduce failure rates, extend equipment lifespan, and enhance overall brand reliability.

Using Proper Terminal Block is a crucial step in improving electrical performance, involving aspects such as connection reliability, signal integrity, and power transmission efficiency.  The following is a systematic guide to selection and application:

 

I. Clearly Define Core Electrical Performance Indicators

Contact Resistance: Low and stable contact resistance reduces heat generation and energy loss.

Current Carrying Capacity: Terminals must withstand the rated current (considering instantaneous peak values).

Voltage Drop and Temperature Rise: Excellent design minimizes voltage loss and heat accumulation.

Insulation and Dielectric Strength: Prevents leakage and breakdown (especially in high-voltage environments).

Signal Integrity: High-frequency signals require impedance matching and shielding to prevent interference.

 

Mechanical Stability: Resistance to vibration and loosening ensures reliable contact over the long term.

II. Key Selection Factors for Terminals

1. Material Selection

Conductor Material:

High conductivity: Oxygen-free copper and copper alloys (such as brass and phosphor bronze) are the mainstream choices.

High current/high temperature environments: Consider silver plating or aluminum material (for lightweight applications).

Insulation Material:

General purpose: PVC, nylon (low cost).

High temperature/flame retardant: PTFE (Teflon), PEI, PPS.

Plating Treatment:

Anti-oxidation/improved conductivity: Silver plating (optimal conductivity), gold plating (corrosion resistance, suitable for high frequencies), tin plating (low cost, but beware of "tin whiskers").

Environmental adaptability: Salt spray environments require thick plating or gold/nickel composite plating.

 

2. Structural Design

Crimping vs. Soldering:

Crimping terminals: Requires specialized tools, offers high consistency, good vibration resistance, and is suitable for mass-produced wire harnesses.

Soldering terminals: Manual operation is prone to cold solder joints; wave soldering/reflow soldering is recommended.

Contact Surface Design:

Wire spring structure (multi-contact): Redundant contact, excellent vibration resistance.

Double helical spring structure: High retention force, used in high-vibration environments (such as aerospace).

Locking Mechanism:

 

Snap-fit ​​and threaded locking (e.g., MIL-DTL-38999 military-grade connectors) prevent loosening.

 

3. Matching with the Cable

Cross-sectional area matching: The terminal specifications must strictly correspond to the wire gauge (e.g., AWG standard).

Crimping quality: Use professional crimping tools to avoid over-crimping (metal fracture) or under-crimping (insufficient tensile strength).

 

Insulation support: Terminals with insulation sleeves can prevent stress fractures.

 

If you're an engineer, buyer, or seller, it's important to know about the different kinds of terminal blocks, Pitch, and where they're used.

 

I. Regular PCB Terminal Types

 

1. PCB Screw Terminals

These are strong and conduct electricity well, so they're good when you need a really reliable connection.

You'll often see them as 2-pin or 3-pole setups.

 

2. Pluggable PCB Terminals

These are made to be plugged in and out quickly, which makes fixing or switching things out easier.

They're common in industrial control boxes and automation systems.

 

3. Spring Terminals / Screwless Terminals

These are fast to install and don't shake loose easily, which is good for PCBs with a lot of wires packed close together.

 

II. What You Need to Know About PCB Terminal Spacing (Pitch)

 

The spacing between pins depends on how much current and voltage you need:

 

- 3.5mm / 3.81mm: For signals and when you don't need much current

- 5.0mm / 5.08mm: For industrial controls and power units

- 7.5mm / 7.62mm: For high current and voltage

 

III. Where Barrier Terminal Blocks Are Used

Barrier terminal blocks have more space between the connections and are safer.

They're usually found in power equipment, industrial control systems, and PCBs that handle a lot of power.

 

IV. Why Go with a Terminal Maker?

Buying straight from a terminal maker, factory, or provider means you get:

 

- Products that are always good quality

- The option to get things made the way you want

- Better prices

- Delivery you can count on, which is good for big orders

 

In conclusion:

From screw terminals to pluggable and insulated ones, picking the right terminal and spacing is key for a safe and well-performing system.

As a terminal factory, we give customers everywhere good terminal solutions.

 

In industrial control, power systems, automation equipment, and electronic products, terminal blocks are one of the most common and critical connectors.Choosing the right type of terminal block (such as pluggable PCB terminals, screw terminals, or spring terminals) not only affects wiring efficiency but also directly impacts system stability and future maintenance costs.

 

I. What are Pluggable PCB Terminal Blocks?

Pluggable PCB terminal blocks consist of two parts: a plug and a base, allowing for quick insertion and removal without the need for rewiring.

This type of terminal block is widely used in modular equipment and industrial control systems.

Advantages include:

- Fast installation and maintenance

- Reliable connection and stable contact

- Suitable for PCB mounting

- Available in various pitch sizes, such as 3.5mm, 3.81mm, 5.0mm, 5.08mm, 7.5mm, and 7.62mm

 

 

II. Screw Terminal Blocks: Characteristics

Screw terminal blocks secure wires using screws, resulting in a robust structure. They are one of the most common types of terminals in industrial applications.

 

Main Features:

- Secure wire fixation with strong tensile strength

- Suitable for medium to high current applications

- Low cost and high versatility

- Available in various configurations, including PCB mount screw terminals, 2-pin, 3-pole, etc.

 

III. Spring/Screwless Terminal Blocks

Spring terminal blocks use spring clips to secure wires, eliminating the need for screws and improving assembly efficiency.

 

Key Advantages:

- Fast wiring, reducing labor time

- Excellent vibration resistance

- Suitable for high-density PCB designs

 

 

IV. PCB Mounting Terminals and Barrier Terminal Blocks

In applications requiring high insulation distance and safety, barrier terminal blocks are widely used,

suitable for power supplies, power control, and industrial equipment.

 

V. How to Choose the Right Terminal Block?

When selecting a terminal block, it is recommended to focus on:

1. Terminal spacing (Pitch)

2. Current and voltage ratings

3. Wiring method (screw/spring/pluggable)

4. PCB mounting method

5. Frequency of future maintenance

 

Conclusion:

Whether it's pluggable terminals, PCB-mounted terminals, or spring terminals, choosing the right terminal solution can significantly improve system stability.

As a professional terminal manufacturer and supplier, we can provide customized PCB terminal solutions for our customers.