The Glass Grain Sampler for Hydrolytic Resistance is an automated sample preparation instrument designed for pharmaceutical glass container evaluation. It provides standardized glass crushing, sieving, and collection processes required for the Hydrolytic Resistance Test of Glass Containers according to international standards such as ISO 719 and ISO 720.

In pharmaceutical packaging quality control, accurate evaluation of glass chemical durability is essential because glass containers directly contact sensitive drug formulations. Before performing hydrolytic resistance testing, glass samples must be prepared into qualified grain sizes with controlled particle distribution. The Glass Grain Sampler helps laboratories achieve consistent sample preparation, reduce operator variation, and improve testing reliability.

By integrating grinding and sieving functions into one automated system, this equipment provides an efficient solution for pharmaceutical manufacturers, glass container suppliers, regulatory laboratories, and quality control departments requiring reliable preparation of glass grains for hydrolytic resistance evaluation.

Why Hydrolytic Resistance Testing of Glass Containers Matters

Pharmaceutical glass containers are widely used for injectable drugs, infusion solutions, oral liquids, and other medical products because of their excellent transparency, chemical stability, and protective performance. However, glass is not completely inert. When glass surfaces interact with water or aqueous pharmaceutical formulations, certain alkaline components inside the glass structure may dissolve into the solution.

This process, known as hydrolytic attack, may affect:

Drug formulation stability
Solution pH balance
Product shelf life
Patient safety
Long-term container compatibility

The purpose of hydrolytic resistance testing is to determine how effectively glass materials resist chemical interaction with water under controlled conditions.

Reliable hydrolytic resistance testing helps manufacturers:

Quality Control Objective	Benefit
Evaluate glass chemical durability	Ensure containers maintain performance during storage
Control ion release from glass	Reduce potential impact on drug formulations
Verify packaging compatibility	Support safe pharmaceutical product development
Meet regulatory requirements	Comply with international pharmacopeia standards
Improve production consistency	Maintain stable quality between batches

For pharmaceutical packaging manufacturers, hydrolytic resistance evaluation is not only a regulatory requirement but also an important part of ensuring drug safety.

What Is a Glass Grain Sampler for Hydrolytic Resistance?

A Glass Grain Sampler for Hydrolytic Resistance is a specialized laboratory instrument used to prepare glass grain samples before hydrolytic resistance testing.

The instrument converts pharmaceutical glass containers into standardized glass particles through controlled mechanical crushing and precise sieving. The prepared glass grains are then used for evaluation methods such as:

Hydrolytic resistance of glass grains at 98 °C according to ISO 719
Hydrolytic resistance of glass grains at 121 °C according to ISO 720

Traditional manual preparation methods may involve separate crushing and screening operations, which can introduce differences caused by operator handling, inconsistent grinding force, or particle contamination.

The automated Glass Grain Sampler improves the preparation process by providing:

Controlled crushing conditions
Repeatable particle size distribution
Reduced operator influence
Improved laboratory efficiency
Safer handling of broken glass materials

For laboratories performing frequent pharmaceutical glass testing, automated sample preparation helps create more reliable and comparable test results.

Principle of Glass Grain Preparation for Hydrolytic Resistance Testing

The preparation principle is based on mechanical crushing followed by particle size classification.

The glass sample is first placed inside the integrated mortar. The automatic pestle applies controlled force to break the glass into smaller particles. After crushing, the vibration sieving system separates the glass grains according to specified particle size requirements.

The complete preparation process includes:

Process Step	Description
Sample loading	Place glass container material into the standard mortar
Crushing	Automatic pestle breaks glass into smaller grains
Sieving	Vibratory sieves classify particles according to size
Collection	Qualified glass grains are collected for testing
Hydrolytic resistance evaluation	Prepared samples are used for chemical durability testing

Consistent grain preparation is important because particle size distribution influences the contact area between glass grains and water during testing. Standardized preparation ensures that different laboratories can achieve comparable results.

How Is the Hydrolytic Resistance Test of Glass Containers Performed?

The Hydrolytic Resistance Test of Glass Containers generally involves preparing glass samples and exposing them to controlled water conditions.

For glass grain testing, the preparation stage is critical:

Select representative glass container samples.
Crush the glass into grains using a standard preparation method.
Separate qualified particles through sieving.
Clean and prepare the glass grains according to testing requirements.
Perform hydrolytic resistance evaluation under specified temperature conditions.

Different standards apply different testing temperatures:

Test Method	Temperature Condition	Purpose
ISO 719	98 °C	Evaluate hydrolytic resistance of glass grains under standard conditions
ISO 720	121 °C	Evaluate higher-temperature hydrolytic resistance performance

The Glass Grain Sampler supports the preparation requirements before these tests, helping laboratories improve repeatability and reduce manual preparation errors.

Manual Preparation vs Automated Glass Grain Preparation

Automated preparation provides advantages over traditional manual grinding and sieving methods.

Comparison Item	Manual Preparation	Automated Glass Grain Sampler
Crushing process	Depends on operator technique	Controlled automatic operation
Particle consistency	May vary between operators	Stable grain size distribution
Labor requirement	Requires multiple preparation steps	Integrated crushing and sieving
Safety	Higher exposure to glass fragments	Reduced operator contact
Repeatability	More affected by human factors	Higher testing consistency

For pharmaceutical quality control laboratories, improving sample preparation consistency directly supports more reliable hydrolytic resistance test results.

Applications of Glass Grain Sampler for Pharmaceutical Glass Containers

The Glass Grain Sampler is suitable for preparing samples from various pharmaceutical glass packaging materials.

Material / Product	Application
Injection vials	Injectable drug packaging evaluation
Ampoules	Medical glass container quality control
Infusion bottles	Large-volume pharmaceutical packaging testing
Oral liquid bottles	Chemical durability evaluation
Other pharmaceutical glass containers	Research and regulatory testing

Typical users include:

Pharmaceutical manufacturers
Glass packaging producers
Third-party testing laboratories
Quality inspection organizations
Research institutions

Key Features and Benefits

The Glass Grain Sampler combines automated operation with standard-compliant sample preparation technology.

Feature	Benefit
Standard-compliant mortar and pestle	Provides consistent glass crushing conditions
Integrated crushing and sieving	Simplifies workflow and improves efficiency
Automated operation	Reduces operator influence
HMI touchscreen control	Provides convenient operation and parameter setting
Precision vibration sieving	Ensures qualified particle size separation
Safety protection design	Reduces risk during glass sample processing
High repeatability	Supports pharmaceutical quality requirements

Technical Specifications

Parameter	Specification
Mortar/Pestle Dimension	Φ50 / Φ48 mm
Sieve A Aperture	425 μm
Sieve B Aperture	300 μm
Sieve O Aperture	600 μm
Sieve Shaking Duration	5 min
Gas Pressure	0.5 MPa
Gas Port Size	Φ6 mm
Power Supply	AC 110–220V 50/60Hz

Why Use Automated Equipment for Glass Hydrolytic Resistance Sample Preparation?

Reliable testing begins with reliable sample preparation. Even when laboratories use advanced analytical methods, inconsistent glass grain preparation can affect test repeatability.

An automated Glass Grain Sampler provides advantages for modern quality control environments by:

Improving laboratory productivity
Supporting standardized preparation procedures
Reducing manual operation differences
Enhancing operator safety
Helping meet pharmaceutical testing requirements

For companies producing pharmaceutical glass packaging or drug products, investing in reliable preparation equipment supports better quality management and regulatory compliance.

Cell Instruments provides professional material testing solutions for pharmaceutical packaging, medical materials, and industrial quality control applications. Customized fixtures and testing systems are also available for specialized laboratory requirements.

Conclusion

The Glass Grain Sampler for Hydrolytic Resistance is an automated laboratory instrument designed to prepare standardized glass grain samples for pharmaceutical glass container testing. By integrating crushing, sieving, and collection functions, the system provides consistent sample preparation for hydrolytic resistance evaluation according to ISO 719 and ISO 720 requirements. It helps pharmaceutical manufacturers, glass container suppliers, and quality control laboratories improve testing efficiency, repeatability, and compliance when evaluating the chemical durability of medical glass packaging materials.

Accurate hydrolytic resistance testing depends on reliable glass sample preparation. The Glass Grain Sampler provides pharmaceutical laboratories with an efficient solution for producing standardized glass grains required for ISO and pharmacopeia testing methods. Cell Instruments specializes in material testing equipment and customized testing solutions for pharmaceutical packaging, medical products, and industrial applications. Contact our technical team to learn how automated glass grain preparation equipment can improve your laboratory workflow and testing reliability.