Lester Scientific Instruments - Precision Testing Equipment & Solutions

About Lester Scientific Instruments

Xiamen Lester Scientific Instruments Co., Ltd. was established in 2010. The company operates under two major brands: “Qunlong” and “Mead”, backed by a strong R&D, manufacturing, and sales service team with a solid production foundation and extensive technical expertise.

Over more than a decade, we have continuously innovated and refined our core technologies in density balances and moisture meters, evolving into a comprehensive high-tech enterprise. We now serve a wide range of testing needs in physical property analysis, environmental testing, and quality assurance across industries such as rubber, plastics, metals, electronic materials, and biomedicine.

In April 2014, Xiamen Mead Technology Co., Ltd. was established, building on a strong market reputation and customer trust to further expand our technological leadership and global reach.

Our Products & Solutions

Engineered for precision, reliability, and compliance with international standards including ISO and ASTM.

Halogen Moisture Analyzer

Fast, accurate, and reliable moisture determination using halogen heating and advanced weighing technology. Ideal for plastics, grain, feed, and powder industries.

• Rapid drying and measurement
• High-precision sensors
• User-friendly interface
• Complies with ISO standards

Karl Fischer Titrators

The gold standard for water content determination. Delivers precise results within minutes using volumetric or coulometric titration methods.

• Specific standard for moisture analysis
• High accuracy and repeatability
• Suitable for liquids and solids
• Automated operation available

Online Moisture Analyzer

Non-contact, real-time moisture monitoring using Near-Infrared (NIR) technology. Integrates with PLC systems for full process control.

• Real-time process monitoring
• Non-destructive measurement
• PLC integration support
• Ideal for production lines

Analytical Balances

High-performance weighing for small, valuable, and rare samples. Ensures accuracy and reliability in laboratory environments.

• Readability down to 0.1mg
• Internal calibration
• Draft shield included
• GLP/GMP compliant

Precision Balances

Designed for accurate and consistent weighing in industrial and laboratory settings. Available in multiple capacity ranges.

• Multiple weighing units
• Overload protection
• RS232 interface
• Stable under variable conditions

Platform Scales

Stand-alone industrial weighing platforms built for durability in harsh environments. Ideal for metal alloys and heavy inspection tasks.

• High load capacity
• IP65 protection rating
• Stainless steel platform
• Digital indicator with hold function

Solid Density Balance

Uses Archimedes’ buoyancy principle to measure the density of solid materials with high precision.

• Fast measurement cycle
• Automatic calculation
• Suitable for metals, plastics, ceramics
• Complies with ASTM D792

Liquid Density Balance

Accurately measures the density of liquids and powders using hydrostatic weighing principles.

• Ideal for quality control
• Temperature compensation
• Easy-to-use software
• Minimal sample volume required

Gold Density Balance

Specialized for precious metals. Ensures accurate density and purity verification for gold, silver, and other valuable materials.

• High-resolution sensors
• Anti-theft design
• Fast verification process
• Used in jewelry and refining

Plastics Testing Equipment

Comprehensive solutions for analyzing composition, formulation, and performance of plastic products and raw materials.

• Complies with ISO/ASTM standards
• Melt flow index testers
• Tensile and impact testers
• Thermal analysis tools

Why Choose Lester Scientific?

Engineered for excellence, trusted by laboratories and industries worldwide.

ISO & ASTM Compliant

All equipment is manufactured and tested according to international standards, ensuring reliability and regulatory compliance.

Real-Time Monitoring

Online analyzers provide instant feedback, enabling immediate process adjustments and reducing waste.

End-to-End Support

From installation to training and maintenance, our team ensures seamless integration and long-term performance.

Frequently Asked Questions

What industries use your equipment?

Our instruments are widely used in plastics, grain, feed, powder, tobacco, rubber, metals, electronic materials, biomedicine, and more.

Are your products compliant with international standards?

Yes, our moisture analyzers, density meters, and plastics testing equipment are produced in accordance with ISO, ASTM, and other global standards.

Do you offer technical support?

Absolutely. We provide comprehensive support including installation, training, calibration, and maintenance services.

Can your online moisture analyzers integrate with existing systems?

Yes, our online moisture meters are designed to cooperate with PLC production control systems for real-time process monitoring and automation.

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