GSO ISO 18191:2021
ISO 18191:2015
Gulf Standard
Current Edition
·
Approved on
01 July 2021
Water quality — Determination of pHt in sea water — Method using the indicator dye m-cresol purple
GSO ISO 18191:2021 Files
No files for this standard are available in the store currently.
GSO ISO 18191:2021 Scope
ISO 18191:2015 specifies a spectrophotometric determination of the pHt of sea water on the total hydrogen ion concentration pH scale using the indicator dye m-cresol purple. The total hydrogen ion concentration, [H+]t, is expressed as moles per kilogram of sea water. The method is suitable for assaying oceanic levels of pHt 7,4 to 8,2 for normal sea water of practical salinity ranging from 20 to 40.
Best Sellers From Chemical and Textile Sector
OS GSO 1943:2024
GSO 1943:2024
Omani Standard
Cosmetic Products – Safety Requirements of Cosmetics and Personal Care Products
GSO 1943:2024
Gulf Technical Regulation
Cosmetic Products – Safety Requirements of Cosmetics and Personal Care Products
GSO 2528:2024
Gulf Technical Regulation
Cosmetic products – Technical Regulation of Cosmetic and Personal Care Products Claims
OS GSO 2528:2024
GSO 2528:2024
Omani Standard
Cosmetic products – Technical Regulation of Cosmetic and Personal Care Products Claims
Recently Published from Chemical and Textile Sector
OS 1640:2026
Omani Standard
Fishing boats - fishing boats less than 14 meters in length
GSO 2654:2026
Gulf Technical Regulation
The Global Harmonized system (GHS) in Gulf Standardization Organization (GSO) Member Countries
GSO ASTM D226/D226M:2026
ASTM D226/D226M:25
Gulf Standard
Standard Specification for Asphalt-Saturated Organic Felt Used in Roofing and Waterproofing
GSO ASTM D4154:2026
ASTM D4154:22
Gulf Standard
Standard Performance Specification for Men's and Boys' Knitted and Woven Beachwear and Sports Shirt Fabrics