Hunan Zhengzhong Pharmaceutical Machinery Co., Ltd.
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Liquid Dosage
We offer automatic visual inspection & leak testing equipment for parenterals, eye drops and oral liquids in ampoules, vials, prefilled syringes and bottles

We provide advanced automatic visual inspection and leak testing systems tailored for liquid pharmaceutical products, including injectables, eye drops, and oral solutions in ampoules, vials, prefilled syringes, and bottles. These inspection systems are designed to detect visible particulates, cosmetic defects, and container integrity issues in liquid dosage forms. Inspection capabilities cover a wide range of contaminants such as glass shards, fibers, black spots, and white particles (with detection sensitivity ≥50μm), as well as visual defects like underfilled volumes, cap deformation, and micro-leakages. Full coverage inspection is achieved across the entire container from top to bottom, ensuring accurate and efficient quality control.

Liquid Dosage
Liquid Dosage
Liquid Dosage
Liquid Dosage
Key Features for Liquid Dosage Applications
  • Compatible with various container types at inspection speeds ranging from 200 to 600 containers per minute
  • Fully servo-driven system ensures precise motion control, stable tracking, and rapid format changeover
  • Real-time monitoring of light source intensity for consistent detection quality
  • Inspection performance validated using Knapp testing methodology, compliant with FDA and EU regulatory standards
  • Adjustable detection sensitivity to accommodate different product and packaging requirements
  • Proprietary high-frequency, high-voltage power module with low current output and intelligent discharge pause function to prevent equipment and product damage
  • Integrated reject confirmation feature to ensure failed products are reliably removed
  • Both visual inspection and leak testing systems are offered in multiple series with a wide range of models to meet diverse operational needs
Key Features for Liquid Dosage Applications
Key Features for Liquid Dosage Applications
Key Features for Liquid Dosage Applications
Key Features for Liquid Dosage Applications
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Interested in learning more about our Visual Inspection and Leak Testing Equipment

Get in touch with us today!
Test Methods

Discover the test methods we use in our pharmaceutical inspection equipment

Visual Image Processing
Visual Image Processing
Vacuum Decay
Vacuum Decay
High Voltage Leak Detection (HVLD)
High Voltage Leak Detection (HVLD)
Products
  • Visual Inspection Machines
  • Leak Testing Machines
  • Visual Inspection & Leak Testing Machine
Test Methods
  • Visual Image Processing
  • Vacuum Decay
  • High Voltage Leak Detection (HVLD)
Applications
  • Liquid Dosage
  • Freeze-Dried Powder
Contact Us
zzoneinspection@gmail.com
+86-731-88906436
+86-18692213322 (Sabrina Wang)
+86-13786180170 (Cici Li)