1 - AS 4078:1992 FIRE PROTECTION - FIRE EXTINGUISHING MEDIA - CARBON DIOXIDE
4 - PREFACE
5 - CONTENTS
6 - 1 Scope
6 - 2 Normative references
6 - 3 Definition
6 - 4 Requirements
6 - 5 Sampling
6 - 5.1 General
6 - 5.2 Sampling equipment
6 - 5.3 Procedure
6 - 5.3.1 General
7 - 5.3.2 Direct sampling
7 - 5.3.3 Sampling in cylinders
7 - 6 Methods of test
7 - 6.1 Safety warning
7 - 6.2 Purity
7 - 6.3 Water content
7 - 6.4 Oil content
7 - 6.5 Total sulfur compounds content
7 - 7 Packaging and labelling
8 - Annex A - Determination of water content
8 - A.1 Principle
8 - A.2 Apparatus and material
8 - A.2.1 Two absorption tubes
8 - A.2.2 Flow meter
8 - A.2.3 Gas meter
8 - A.2.4 Test sieves
8 - A.2.5 Desiccant
8 - A.3 Sampling
8 - A.4 Determination
8 - A.5 Expression of results
9 - Annex B - Determination of oil content
9 - B.1 Principle
9 - B.2 Agents
9 - B.2.1 Carbon tetrachloride
9 - B.2.2 Standard oil solution.
9 - B.3 Apparatus
9 - B.3.1 Two bubblers
9 - B.3.2 Drechsel bottle
9 - B.3.3 Flow meter
9 - B.3.4 Gas meter
9 - B.3.5 Infra-red spectrometer and accessories
9 - B.4 Sampling
9 - B.5 Procedure
9 - B.5.1 Preparation of test solution
9 - B.5.2 Preparation of blank test solution
9 - B.5.3 Spectrometric measurements
9 - B.5.4 Preparation of the calibration graph
10 - B. 6 Expressi on of results
11 - Figure B. 1 - Bubbler for the determination of oil content
12 - Annex C - Determination of total sulfur compounds content
12 - C.1 Principle
12 - C.2 Reagents
12 - C. 2.1 Hydrogen,
12 - C. 2. 2 Hydrochloric acid,
12 - C. 2.3 Soda lime,
12 - C. 2.4 Cadmium chloride,
12 - C. 2.5 Sodium thiosulfate,
12 - C. 2.6 Iodine,
12 - C. 2.7 Starch indicator solution.
12 - C.3 Apparatus
12 - C. 3.1 Flow meter,
12 - C. 3.2 Flow meter,
12 - C. 3.3 Two furnace tubes,
12 - C. 3.4 Furnace and control:
12 - C. 3.5 Soda lime tower,
12 - C. 3.6 ‘Y’ tube.
12 - C. 3.7 Bubbler,
12 - C. 3.8 Burette,
12 - C. 3.9 Pipette,
12 - C. 3.10 Test sieves,
12 - C.4 Sampling
13 - C.5 Procedure
13 - C.6 Expression of results
14 - Annex D - General properties
14 - D.1 Physical properties
14 - D.2 Electrical conductivity
14 - D.3 Effects on materials
14 - D.4 Static electricity
14 - D.5 Toxicology
15 - Annex E - Safety precautions for handling
17 - Annex G - Toxicology
17 - G.1 General
17 - G.2 Precautions and treatment