Last updated 4th March 2026

Glass

Glass is an amorphous solid made from natural raw materials limestone, soda ash and sand by melting at very high temperatures. At high temperatures glass is liquid in nature and it becomes solid upon cooling. Glass is hard, brittle, transparent or translucent when in solid state. Glass is used in many aspects of daily life as industrial or household objects or their parts. Glass samples are subjected to various destructive and non-destructive testing to assess their end-use suitability.

Introduction to Glass Testing

Glass is an inorganic solid material, usually transparent or translucent in appearance and hard, brittle, and impervious to other natural elements. Items made of glass find use in a range of applications across various industrial and household purposes. Depending on the function, style, and design required, glass is often molded, blown, cut, or pressed in different shapes and sizes.Performance of glass as a raw material and glass products is evaluated to check their suitability in end-use conditions as per the standards defined.

Glass Testing Methodologies

Glass testing standards support material science labs, material processing businesses, product makers, and other users of glass and glass products in their appropriate fabrication and treatment methods to assure excellent quality and craftsmanship toward safe use. Following are the common tests done for glass and glass items-

Determination of Internal Pressure Strength of Glass Containers
Determination of thermal Shock Resistance of Glass Containers
Polariscopic Examination of Glass Containers
Determination of Sulfide Resistance of Ceramic Decorations on Glass
Determination of Strength of Glass by Flexure
Determination of Softening Point of Glass
Determination of Annealing Point and Strain Point of Glass by Beam Bending
Determination of Density of Glass by Buoyancy

These and other test methods evaluate the performance of glass and glass products to effects of weathering, volatile fogging and other environmental exposures, including extreme temperature variations, ultraviolet radiation, and changes in humidity.

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MATERIAL TESTING

We offer destructive and non-destructive tests over a range of mechanical, electrical, chemical, thermal, optical, corrosion, radiation, and biological testing methodologies defined by ASTM, ISO and other organizations.

PRODUCT TESTING

We help you evaluate and ensure your product quality and performance with standard and custom-made testing solutions. All the tests are done at well-equipped testing laboratories using standard testing methods for best output and satisfaction.

FAILURE ANALYSIS

Failure analysis ensures high levels of quality in every manufacturing process. We help you with getting the best failure or root cause analysis to determine the cause of the failure. The results help you identify means to prevent failure recurrences.

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Glass

Introduction to Glass Testing

Glass Testing Methodologies

ASTM D257, IEC 62631-3-1 Surface Resistivity, Volume Resistivity

ASTM C33 Standard Specification for Concrete Aggregates

ASTM D149, IEC 60243 Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials

ASTM E8/E8M Standard Test Methods for Tension Testing of Metallic Materials

ASTM D792, ISO 1183 Density and Specific Gravity of Plastics

ASTM D570 Water Absorption of Plastics

ASTM D1003 Haze and Luminous Transmittance of Transparent Plastics

Pore Size Analysis (BJH) and (BET) Gas Adsorption Test for Surface Area Analysis

ASTM D882 Tensile Properties of Thin Plastic Sheeting

ASTM D698 Laboratory Compaction Characteristics of Soil

Differential Scanning Calorimetry (DSC)

ASTM D471 Rubber Property – Effect of Liquids

ASTM C127 Standard Test Method for Specific Gravity and Absorption of Coarse Aggregate

ASTM D543 Standard Practices for Evaluating the Resistance of Plastics to Chemical Reagents

ASTM E3 Standard Guide for Preparation of Metallographic Specimens

ISO 4217 Codes for the Representation of Currencies

ASTM D638 Standard Test Method for Tensile Properties of Plastics

ASTM F1249 Determination of Water Vapor Transmission Rate through Plastic Film and Sheeting

ASTM A366 Standard Speciﬁcation for Commercial Steel Sheet

ASTM A578 Standard Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications

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