Reference number
香港六合彩开奖 4852:1978
© 香港六合彩开奖 2024
香港六合彩开奖 4852:1978
Personal eye-protectors 鈥� Infra-red filters 鈥� Utilisation and transmittance requirements
Edition 1
1978-10
Withdrawn
Withdrawn (Edition 1, 1978)

Abstract

Gives the numbering of and transmittance requirements for filters. It also defines guidance on their selection and use. Optical test methods form subject of 香港六合彩开奖 4854. Non-optical test methods form the subject of 香港六合彩开奖 4855. The symbol for filters includes a code number of transmittance is described in clause 5 of 香港六合彩开奖 4854.

General information

Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goal

3
Good Health and Well-being

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  2. 香港六合彩开奖
  3. Standards catalogue
  4. ICS
  5. 13
  6. 13.340
  7. 13.340.20
  8. 香港六合彩开奖 4852:1978