Grey scales are used wherever a change in colour or appearance has occurred and it is necessary to measure the difference.  There are two versions, one for colour assessment and the other for staining.  This version is for assessment of colour change.

Verification

This product is verified.

Pack size

Sold individually.

This item can be used with these machines:

• STD 442 Colour fastness to water and perspiration
• STM 421 Rub fastness tester
• STM 461 Circular rub fastness tester
• STM 462 Circular rub fastness tester
• STM 500 VeriVide colour assessment
• STM 643B Rub fastness tester

This item can be used for these other test methods and standards:

• EN ISO 105 A02