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UNE-EN 17891:2024 UNE
Status: Vigente/ 2024-04-10
Conservation of cultural heritage - Desalination of porous inorganic materials by poultices
UNE 30001:1957 UNE
Status: Vigente/ 1957-07-15
CHEMICAL PRODUCTS. CLASSIFICATION BY QUALITIES, DEFINITIONS AND STANDARDIZATION.
ISO 5932:1980 ISO
Status: Withdrawn/ 1980-11-01
Boric acid, boric oxide and disodium tetraborates for industrial use — Determination of cobalt content — 2- nitroso-1- naphthol photometric method
ISO 5933:1980 ISO
Boric acid, boric oxide, disodium tetraborates and crude sodium borates for industrial use — Determination of total nickel content of boric acid, boric oxide and disodium tetraborates and the alkali-soluble nickel content of crude sodium borates — Furil alpha-dioxime photometric method
ISO 3119:1976 ISO
Status: Withdrawn/ 1976-04-01
Boric acid, boric oxide and disodium tetraborates for industrial use — Determination of chromium content — Diphenylcarbazide photometric method
ISO 3121:1976 ISO
Boric acid, boric oxide and disodium tetraborates for industrial use — Determination of chloride content — Mercurimetric method
ISO 3122:1976 ISO
Boric acid, boric oxide, disodium tetraborates, sodium perborates and crude borates for industrial use — Determination of iron content — 2,2'- Bipyridyl photometric method
ISO 1918:1972 ISO
Status: Withdrawn/ 1972-08-01
Boric acid, boric oxide, disodium tetraborates and crude sodium borates for industrial use — Determination of sulphur compounds — Volumetric method
ISO 2214:1972 ISO
Status: Withdrawn/ 1972-07-01
Boric acid, boric oxide and Disodium tetraborates for industrial use — Determination of manganese content — Formaldehyde oxime photometric method
ISO 2215:1972 ISO
Boric acid, boric oxide and Disodium tetraborates for industrial use — Determination of copper content — Zinc dibenzyldithiocarbamate photometric method
