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Recreational diving services. Requirements for the training of recreational scuba divers. Level 2. Autonomous…

Recreational diving services. Requirements for the training of recreational scuba divers. Level 3. Dive leade…

Recreational diving services. Requirements for the training of recreational scuba divers. Level 1. Supervised…

Recreational diving services — Requirements for the training of recreational scuba divers — Part 2: Level 2 —…

Overview ISO 24801-2:2014 - "Recreational diving services - Requirements for the training of recreational scuba divers - Part 2: Level 2 - Autonomous diver" defines the competencies, training conditi…

Recreational diving services — Requirements for the training of recreational scuba divers — Part 1: Level 1 —…

Overview ISO 24801-1:2014 - Recreational diving services - Part 1: Level 1 - Supervised diver - defines the minimum competencies, evaluation criteria and training conditions required for a recreation…

Recreational diving services — Safety related minimum requirements for the training of recreational scuba div…

Recreational diving services — Requirements for the training of recreational scuba divers — Part 3: Level 3 —…

Overview ISO 24801-3:2014 - "Recreational diving services - Requirements for the training of recreational scuba divers - Part 3: Level 3 - Dive leader" defines the competencies, evaluation criteria a…

Sodium chloride for industrial use — Determination of sulphate content — Barium sulphate gravimetric method

Overview ISO 2480:1972 specifies a standardized gravimetric method for the determination of sulphate content in sodium chloride for industrial use. This internationally recognized standard by the Int…