Heat transfer labelling firm Unimark said it has been granted an Oeko-Tex Standard 100 Certification, meaning it will voluntarily test its products to assure they are free from harmful levels of more than 100 harmful substances.

The company, which sells heat transfer products for apparel and footwear items, said the Oeko-Tex restricted substances list (RSL) includes formaldehyde, heavy metals, pesticides, and carcinogenic dyestuffs.

Unimark secured the certification for its major product lines - the Easy Stretch , Comfort Series and Tuff Text transfers.

It was given Product Class 2 certification for items that come into close contact with human skin, such as intimates, clothing and bedding, and the more stringent Product Class 1 certification for children's apparel, textile toys and bedding.

"As concerns about textile safety grow in the industries we serve, we determined that the Oeko-Tex Standard 100 Certification was the best method to reassure our customers that our products are safe," said Steven Anderson, global sales and marketing manager for Unimark.