Penetrometry analysis

Penetrometry analysis measures the resistance of a material or semi-solid product to penetration by a standardized punch. This technique quantifies the consistency, firmness, or hardness of a sample by applying a controlled force according to a standardized protocol. The result (penetration depth or force required) provides a direct indicator of the material's texture and mechanical properties.

Associated methods: penetrometer, ISO or AOAC standards depending on the sector.
Measured parameters: penetration depth, mechanical energy, maximum force, creep resistance.

Industrial applications

Penetrometry is widely used in sectors where the texture, firmness, or malleability of products determines the final quality, production behavior, or user experience. The test is essential in the following industries:

Human nutrition

This technique allows for the characterization of the consistency of fatty or semi-solid products such as butters, margarines, spreads, pasta, pâtés, cheeses, and jellies. It helps optimize formulation, compare different raw materials, and monitor the impact of storage conditions. It is also used to verify compliance with customer specifications and regulatory requirements.

Cosmetic

In cosmetics, penetrometry is used to assess the firmness and texture of gels, balms, thick creams, and body butters. This measurement helps to adjust the formulation (gelling agents, waxes, oils), compare different versions of the same product, and ensure a smooth and pleasant application. It is also useful for verifying the dimensional and sensory stability of a product over time.

Packaging, materials and polymers

Penetrometry is used to characterize the mechanical properties of flexible materials, waxes, resins, moldable polymers, or biomaterials. The test determines resistance to deformation, a key element for validating technical performance and compliance with industrial specifications.

Nutraceuticals and animal nutrition

In nutritional supplements, lozenges, blocks, gels, or paste formulations, analysis provides essential data for adjusting cohesion, compressibility, or mechanical strength. In animal nutrition, it helps measure the firmness of enriched blocks, tablets, pastes, or gels, ensuring optimal use in livestock farming.

Plants and plant extracts

Some paste extracts, plant resins or natural gums require hardness characterization to guarantee their functional performance or transformation (granulation, molding, incorporation into a matrix).

Operation and test conditions

The penetrometer test is performed using a penetrometer, an instrument that applies a punch or needle of standardized dimensions to the sample. The measurement is carried out according to a defined protocol, including:

• the test temperature (highly critical for fatty and polymeric products),
• the application speed,
• the type of punch used,
• the depth or duration of penetration.

Depending on the standard chosen, the result can be expressed in tenths of a millimeter (penetration value), in Newtons (force), or in mechanical energy.

Matrices analyzed

Commonly analyzed product types include:

• butters, margarines, pasta, spreads, confectionery,
• gels, balms, thick cosmetic creams, body butters,
• waxes, bitumens, resins, polymers, flexible materials,
• Pasty or compressed food supplements,
• nutritional blocks and pastes for animals,
• plant extracts, gums, natural resins.

YesWeLab Services

At YesWeLab, we collaborate with a rigorously selected network of laboratories, most of which are certified and accredited (ISO 17025, COFRAC). The laboratory selection depends on your technical requirements, the matrix being analyzed, and the required protocol. Our scientific team supports you from the initial needs assessment to the interpretation of results, ensuring reliable, rapid analyses that comply with current standards. Since 2020, our digital platform has simplified sample management, tracking, and results retrieval for hundreds of industrial and engineering firms.

Related analyses (YesWeLab catalogue)

• Shore hardness analysis
• Analysis of compressive strength
• Analysis of elongation at break
• Apparent viscosity analysis
• Thixotropy analysis
• Analysis of powder cohesion