SPT-01 Soap Texture Analyzer

A soap texture analyzer is a professional instrument designed to objectively evaluate the mechanical and textural properties of soap products. It provides precise, repeatable measurements of hardness, firmness, and penetration resistance, helping manufacturers maintain consistent quality across production batches.

At Cell Instruments Co., Ltd., we specialize in materials testing solutions for packaging, pharmaceuticals, paper, and consumer products. Our experience in texture analysis allows us to deliver reliable soap testing systems that support quality control, formulation development, and compliance with recognized testing practices.

Understanding ASTM D1321 Soap Texture and Penetration Test

Hardness of soap as a key quality indicator

У "The hardness of soap directly affects product durability, usage rate, and consumer perception. A soap that is too soft may deform or dissolve quickly, while excessive hardness can reduce usability and lather performance. A soap texture analyzer provides objective hardness values, replacing subjective hand-feel evaluations with measurable data.

Soap texture and penetration test principle

A soap texture and penetration test measures the resistance of soap when a probe penetrates its surface at a controlled speed and depth. The recorded force–displacement curve reflects internal structure, curing condition, and formulation balance. This method allows manufacturers to compare products, monitor aging effects, and verify process stability.

Reference to ASTM D1321

ASTM D1321 offers a widely recognized reference for penetration testing of wax-like materials and is commonly applied to soap texture analysis. Following ASTM D1321 guidance on test conditions and data interpretation improves result consistency and supports communication between laboratories, suppliers, and customers.

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How the Soap Texture Analyzer Works

A soap texture analyzer applies a controlled vertical force to the soap sample using a defined probe. As the probe contacts and penetrates the soap, the system continuously records force and displacement, generating accurate texture profiles.

Typical test workflow includes:

• Preparing soap samples with consistent dimensions
• Selecting the appropriate penetration or compression probe
• Setting test speed and penetration depth based on internal methods or ASTM D1321
• Running the test and collecting force–distance data
• Evaluating peak force, curve shape, and repeatability

This controlled process ensures reliable comparison between different soap formulations or production lots.

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Suitable Application Materials

The soap texture analyzer supports testing of a wide range of soap products, including:

• Traditional bar soaps
• Transparent and glycerin soaps
• Medicated and specialty soaps
• Composite and synthetic detergent bars

It can also evaluate semi-finished samples to monitor curing progress and formulation stability during development.

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Cell Instruments SPT-01 Texture Analyzer

The Cell Instruments SPT-01 Soap Texture Analyzer is well suited for hardness of soap evaluation and soap texture and penetration test applications based on ASTM D1321. It offers stable force measurement, flexible speed control, and intuitive operation, making it ideal for quality control and R&D laboratories.

SPT-01 Soap Texture Analyzer

Випробувальний полігон	500N(or others)
Speed	1-500 mm/m (or as required)
Resolution	0.5% F.S.
Stroke(jig excluded)	250mm
Dimension(mm, LWH)	410*360*820
Сила	AC 110~ 220V

By combining accurate force measurement with intuitive operation, SPT-01 helps soap manufacturers transform texture testing into a standardized, data-driven process.

Why Choose Cell Instruments’ SPT-01

SPT-01 supports consistent, repeatable soap texture testing and can be adapted to customized testing requirements as production needs evolve.

A professional soap texture analyzer enables manufacturers to move beyond subjective assessment and establish measurable quality standards. By combining reliable instrumentation with recognized test references, Cell Instruments helps soap producers achieve consistent performance, improved product control, and higher customer confidence.

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Поширені запитання

1. What is a soap texture analyzer used for?
A soap texture analyzer measures the hardness of soap, firmness, and penetration resistance to ensure consistent quality and performance.

2. What is a soap texture and penetration test?
A soap texture and penetration test applies controlled force to a soap sample and records deformation, helping quantify structural strength and usability.

3. How does ASTM D1321 apply to soap testing?
ASTM D1321 provides a standardized penetration test method that improves repeatability and reliability when evaluating soap texture and hardness.

4. Why is measuring soap hardness important?
У "The hardness of soap affects durability, dissolution rate, and consumer experience, making it a key quality control parameter.

5. What types of soap can be tested with a texture analyzer?
Soap texture analyzers can test bar soaps, glycerin soaps, medicated soaps, and specialty formulations used in personal care products.