試験方法 · ISO 105-B02

耐光色堅牢度 ISO 105-B02

ISO 105-B02は、窓ガラスを通した昼光を模したキセノンアークランプ下での退色を測定し、ブルーウール基準に対して1～8級で判定します。米国の相当規格はAATCC 16.3です。

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規格

ISO 105-B02

米国同等規格

AATCC 16.3

等級

ブルーウール1～8

当社ラボにて

キセノンアーク耐光試験機

レビュー担当 Xiwen Zhang, Runtang Textile 共同創業者兼CEO · 最終確認：2026年10月

What This Test Measures

A specimen is exposed to xenon arc light alongside eight blue wool references that fade at known rates. The grade is the reference that faded to the same extent: 1 is very poor, 8 is outstanding.

Because the scale runs to 8, grade 4 or 4-5 is a mid-scale result. Check that a required grade refers to the 1–8 light scale rather than the 1–5 grey scale.

How We Run It in Our Lab

Our technicians follow a written work instruction for this method.

Mount

Specimen and blue wool references are mounted and partly covered.

Expose

Exposure to filtered xenon arc light under controlled temperature and humidity.

比較

Fading of the specimen is compared with the blue wool references.

Grade

The grade is the blue wool reference that faded to the same extent, 1–8.

Test Conditions

Key settings. Write the method and procedure in your specification.

Parameter	Setting
光源	Filtered xenon arc lamp
References	Blue wool 1–8 (AATCC 16.3 reports AATCC Fading Units)
Grading scale	1 (very poor) to 8 (outstanding)
Equivalent methods	AATCC 16.3 (US) · GB/T 8427 (China). Compare methods →

Results for Your Order

Ask us for results for the selected fabric, shade and test conditions. Acceptance values for your order are agreed in writing.

Writing This Test into Your Specification

Check the Scale

Light fastness uses grades 1–8; 4-5 is mid-scale.

Light with Perspiration

ISO 105-B07 tests light fastness on fabric wetted with artificial perspiration. Name it separately if you need it.

Bright and Pale Colours

Fluorescent and very pale shades usually measure lower. Discuss the end use before fixing the grade.

Questions About ISO 105-B02

Why is light fastness graded 1 to 8?

It is rated against eight blue wool references that fade at known rates, so the scale differs from the 1–5 grey scales used for washing and rubbing.

Is grade 4 light fastness good?

Grade 4 is a mid-scale result that suits most apparel. Garments with long sun exposure usually need a higher grade.

What is the difference between ISO 105-B02 and ISO 105-B07?

B02 tests dry fabric under artificial daylight; B07 tests fabric wetted with artificial perspiration under light.