JIS/ISO/ASTM Standards Compliance Guide for Measurement Instruments

Why Standards Compliance Matters

In powder material measurement, compliance with JIS, ISO, and ASTM standards is not merely a formality. It serves as the foundation for reliably ensuring quality assurance within international supply chains and building trust with business partners.

Standards compliance is required in a wide range of specific situations:

• International trade — When delivering products to overseas customers, submission of test data based on the importing country's adopted standards is increasingly included as a contractual requirement. Particularly in the carbon black and filler materials sector, ASTM standards are commonly required for North American markets and ISO standards for European markets.
• Customer specification compliance — Major customers such as automotive and battery material manufacturers require quality data based on specific standards. Data obtained using non-standard methods is often not accepted, leading to lost business opportunities.
• Regulatory compliance — In certain industries, regulations mandate testing based on certified standards.
• Data comparability — To compare and verify data across different laboratories, measurement methods based on the same standard are essential. Standards compliance is also a prerequisite for round-robin testing and inter-laboratory comparisons.

Standards compliance in powder measurement is thus a critical element that determines the credibility of a quality control system. The following sections provide a detailed overview of major standards related to powder measurement and guidance on selecting appropriate measurement instruments.

Overview of Key Standards for Powder Measurement

Standards related to powder materials, particularly carbon black testing, fall into three major systems: Japanese (JIS), American (ASTM), and international (ISO). Each reflects historical context and differences in measurement targets, with variations in test conditions and determination criteria.

JIS K 6217 Series (Japanese Industrial Standards)

JIS K 6217 is a Japanese Industrial Standard that specifies test methods for carbon black used in rubber. It systematically covers methods for evaluating the physical properties of carbon black, including oil absorption (OAN/DBP absorption), specific surface area, and particle size distribution. JIS standards are the most widely referenced in domestic transactions, serving as a common basis for quality comparison among Japanese manufacturers.

Key related standards include JIS K 6217-4 (DBP absorption measurement) and JIS K 6217-7 (individual granule hardness measurement).

ASTM D2414 / D3493 (American Society for Testing and Materials)

ASTM D2414 is one of the most widely cited international standards for measuring DBP oil absorption of carbon black. It quantitatively evaluates the structure of carbon black based on torque measurement using the absorptometer method. ASTM D3493 specifies the same measurement method for compressed samples, enabling evaluation that eliminates manufacturing process variations.

Many tire and rubber product manufacturers, primarily in North America, adopt ASTM standards for test data as their default specification.

ISO 19246 (International Organization for Standardization)

ISO 19246 is an international standard for measuring the void volume of carbon black for rubber compounding using the absorptometer method. ISO standards are positioned to achieve international harmonization by referencing both JIS and ASTM, and adoption is progressing in many European and Asian countries.

The table below summarizes the relationship between major standards, test items, and corresponding Asahi Souken products.

Key Considerations for Standard Selection

Which standard to comply with should be determined based on the business environment and customer requirements. We recommend evaluating from the following three perspectives.

Export Destination and Trading Partner Region

If the primary export destination is North America, ASTM standards take priority; for Europe and Asia, ISO standards are preferred. For primarily domestic transactions, JIS standards are the default, though many JIS standards are increasingly harmonized with ISO, and JIS compliance may satisfy ISO requirements in many cases.

Reviewing Customer Specifications

The most reliable approach is to verify the standard numbers specified in the trading partner's specifications or purchasing requirements. Even for the same "oil absorption" measurement, JIS K 6217-4 and ASTM D2414 may have subtle differences in sample preparation conditions, and confusing standard numbers can cause discrepancies in measured values.

Test Method Equivalency

While test methods may be technically equivalent across JIS, ISO, and ASTM, they are not completely identical. Accurately understanding the correspondence between standards and, when necessary, establishing a system for parallel testing under multiple standards is ideal.

Important: Subtle differences in test conditions between standards (sample amount, drip rate, torque threshold, etc.) can affect measurement results. When compliance with multiple standards is required, verify the requirements of each standard individually and consider adopting measurement instruments that can save and switch instrument parameters for each standard. Asahi Souken's S-500 Oil Absorption Tester features preset measurement conditions for JIS, ASTM, and ISO standards.

Asahi Souken's Standards-Compliant Solutions

Asahi Souken Co., Ltd., as a specialized manufacturer of powder measurement instruments, designs and develops instruments with international standards compliance built in from the ground up. The standards coverage of each product is as follows.

All instruments are designed to faithfully reproduce the test conditions specified by their respective standards. In particular, the S-500 Oil Absorption Tester delivers performance that fully satisfies standard requirements in torque detection precision and DBP drip rate control, and has been adopted by numerous testing laboratories both domestically and internationally.

Additionally, the AGS-106 Grind Gauge Scanner automates and quantifies grind gauge measurement — previously dependent on visual judgment — through image analysis, achieving both standards compliance and measurement reproducibility.

Participation in ASTM Committees

Asahi Souken goes beyond providing standards-compliant products by actively participating in the standards development process itself. In 2016, at the ASTM D24.11 (Carbon Black Subcommittee) meeting held in Vienna, Austria, the company presented technical proposals related to oil absorption testing instruments.

Through this direct involvement in standards-setting organizations, Asahi Souken stays abreast of the latest developments in standard requirements while receiving feedback for instrument development. Participation in ASTM committees demonstrates that Asahi Souken's measurement instruments are based not merely on standards conformity, but on a design philosophy that deeply understands the intent of the standards.

Since standards are periodically revised, an instrument manufacturer's ability to continuously monitor standards developments and provide timely firmware and measurement protocol updates offers significant peace of mind for users.