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Precision Testing Instruments

Advanced aerosol photometers, generators, differential pressure sensors, and airflow measurement tools for cleanrooms, HVAC, and industrial environments.

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100+
Countries Served
8668m²
Factory Area
100+
Employees
2006
Founded

About GTI Instruments

GTI Precision Instrument (Shenyang) Co., Ltd. is an innovative enterprise specializing in the design and manufacturing of high-precision testing equipment for ultra-micro pressure, clean airflow, air-conditioning, and HEPA filter systems.

With over 15 years of experience, GTI has become a trusted partner in the global market, delivering reliable and accurate instruments for cleanroom validation, building airtightness testing, and environmental monitoring.

  • ISO-Certified Manufacturing
  • Global Distribution Network
  • R&D-Driven Innovation
  • 24/7 Technical Support
GTI Factory GTI Equipment GTI Lab GTI Team

Our Products

High-precision instruments engineered for reliability, accuracy, and durability in demanding industrial and laboratory environments.

GTI Aerosol Photometer Model 3991

GTI Aerosol Photometer Model 3991

High-sensitivity photometer for real-time aerosol concentration measurement in cleanrooms and HEPA filter testing.

  • • Real-time monitoring
  • • High accuracy & stability
  • • Compact handheld design
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GTI Aerosol Photometer Model 3990

GTI Aerosol Photometer Model 3990

Reliable photometer for detecting aerosol concentration in HVAC systems and clean environments.

  • • Wide measurement range
  • • Data logging capability
  • • Easy calibration
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GTI Aerosol Generator Model 3990-01

GTI Aerosol Generator Model 3990-01

Laskin-nozzle aerosol generator with 1 to 6 nozzles for precise particle generation in filter testing.

  • • 1–6 Laskin nozzles
  • • Adjustable output
  • • DOP/PAO compatible
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GTI Aerosol Generator Model 3990-02

GTI Aerosol Generator Model 3990-02

Thermal aerosol generator for consistent particle generation in cleanroom validation and filter testing.

  • • Thermal vaporization
  • • Stable particle size
  • • Low maintenance
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GTI Aerosol Generator Model 3990-03

GTI Aerosol Generator Model 3990-03

Built-in compressor aerosol generator for portable and efficient particle generation.

  • • Integrated compressor
  • • Compact and mobile
  • • Ready-to-use system
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GTI Aerosol Generator Model 3990-04

GTI Aerosol Generator Model 3990-04

Salt water aerosol generator for high-concentration particle testing in industrial applications.

  • • Salt water based
  • • High output capacity
  • • Corrosion-resistant materials
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Handheld Micro-manometer GTI 113 & 115

Handheld Micro-manometer GTI 113 & 115

Precision differential pressure measurement for HVAC, cleanrooms, and building airtightness testing.

  • • High-resolution display
  • • Data hold & zero function
  • • Portable and rugged
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Digital Fine Differential Pressure Sensor GTI 135 & GTI 145

Digital Fine Differential Pressure Sensor GTI 135 & GTI 145

High-accuracy digital sensors for monitoring ultra-low pressure differences in critical environments.

  • • Ultra-fine resolution
  • • Analog & digital output
  • • Long-term stability
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Rotating Vane Anemometer GTI 600

Rotating Vane Anemometer GTI 600

Accurate airflow velocity measurement for ventilation systems, cleanrooms, and industrial ducts.

  • • Large vane design
  • • Multi-point averaging
  • • Backlit LCD display
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Blower Door System Model GTI650/658

Blower Door System Model GTI650/658

Complete system for building airtightness testing and energy efficiency evaluation.

  • • High-capacity fan
  • • Integrated pressure sensors
  • • Software for analysis
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Aerosol Diluter

Aerosol Diluter

Precision dilution system for reducing aerosol concentration in high-density environments.

  • • Accurate dilution ratios
  • • Inert materials
  • • Compact design
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HEPA Filter Leakage Testing Kit

HEPA Filter Leakage Testing Kit

Complete solution for validating HEPA/ULPA filter integrity in pharmaceutical and cleanroom applications.

  • • Photometer + generator
  • • Scanning probe included
  • • Compliant with ISO 14644
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Why Choose GTI?

Engineered for performance, reliability, and precision in the most demanding environments.

Certified Quality

All GTI instruments are manufactured under strict quality control and meet international standards for accuracy and safety.

Global Support

With presence in over 100 countries, GTI offers local technical support, calibration services, and spare parts availability.

Innovative Design

Our R&D team continuously improves product performance, usability, and durability based on real-world feedback.

Trusted by Industry Leaders Worldwide

100+
Countries
8668m²
Factory
2006
Founded
100+
Employees

Frequently Asked Questions

What industries use GTI instruments?

GTI instruments are widely used in pharmaceuticals, biotechnology, semiconductor manufacturing, hospitals, HVAC, and building energy efficiency testing.

Are GTI products compliant with international standards?

Yes, GTI products comply with ISO 14644, EN 13184, ASTM E779, and other relevant international standards for cleanroom and building airtightness testing.

Do you offer calibration services?

Yes, GTI provides factory calibration services and supports third-party calibration. All instruments come with a calibration certificate.

What is the warranty period?

GTI offers a standard 12-month warranty on all instruments. Extended warranty options are available upon request.

Can I get technical support after purchase?

Yes, GTI provides dedicated technical support via phone, email, and WhatsApp. Our team responds within 12 hours during business days.

Get in Touch

Reach out for product inquiries, technical support, or partnership opportunities.

Address: 56-39#, the North Street of Huanghe, the District of Huanggu, Shenyang City, Liaoning Province, China.
Email: [email protected] / [email protected]
Phone: +86-17640051869
Telephone: +86-24-81231386
Fax: +86-24-81231386
Contact Person: Judy Liu, Foreign Sales Director
Skype/WeChat: +86 15940407941
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