No.

Lists of reference materials/certified reference materials

Manufacturer

 Supplier

1

Cadmium standard solution (CRM)

National Institute of Science and Technology (NIST) (USA)

Saengvith Science Co., Ltd. (Thailand)

2

Cadmium standard solution (RM)

PerkinElmer, Inc. (USA)

Perkin-Elmer Co.,Ltd.(Thailand)

3

Lead ICP standard 1000 mg/l PbCertiPUR (CRM)

MERCK (Germany)

Earth Cheme Lab Ltd., Part. (Thailand)

4

Lead standard solution (Cat.no. N9300107) (RM)

PerkinElmer, Inc. (USA)

Perkin-Elmer Co.,Ltd. (Thailand)