When a provider of product data is unable or uninterested in making their own measurements of optical properties, they may employ a test lab.

Below is a list of some laboratories that currently have passed the inter-laboratory comparison and are allowed to submit data.

Lawrence Berkeley National Laboratory is not liable for the services offered by these entities, nor does LBNL specifically endorse these over other providers of the same services.

United States

Dr. Michael Jacobson
Optical Data Associates
5237 East Seventh Street
Tucson, AZ 85711-2350

Tel: (520) 748-7333
E-mail: optical@opdata.com
Web Page: http://www.opdata.com/

China

China Building Materials Test and Certification Group Co., Ltd. (CTC)
Glass Test & Certification Department
Guanzhuang Dongli 1#,  Chaoyang District, Beijing 100024 P.R. China Tel: (+86) 10-51167161
Email: igdb@ctc.ac.cn
Web site: http://www.ctc.ac.cn/

Singapore

OTM Solutions Pte Ltd
Attn: Mr. Zheng Zhipeng
50 Tagore Lane
#04-11F, Entrepreneur Centre
Singapore 787494

Tel: (+65) 6372 8807
Fax: (+65) 6511 2969
E-mail: info@otm.sg
Web site: http://www.otm.sg/

Aestec Testing Laboratory Pte Ltd
Attn: Mr Victor Sia
111 Neythal Road,
Singapore 628598

Tel: (+65) 6267 5909
Fax: (+65) 6264 3908