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LPG Testing Parameters and Test Methods
PARAMETERS TEST METHODS
Specific Gravity
Composition
– Methane
– Ethane
– Propane
– Iso-Butane
– N-Butane
– Iso-Pentane
– C5 and HeavierSulphur Species
– Hydrogen Sulphide
– Carbonyl Sulphide
– Methyl Mercaptan
– Ethyl Mercaptan
– Dimethyl Mercaptan
– Propyl Mercaptan
– Ethyl Methyl Sulphide
– Thiopene
– Di-methyl Disulphide
ASTM D 1070
ASTM D 2163






-ASTM D 6228








LPG (Low Propane Gas) Parameters and Test Methods
PARAMETERS TEST METHODS
Observed Sp. Gravity @60/60(not calculated)
Actual Vapour Pressure at 700F and 1000F
Composition
Mol%, C2,C3, 1C4, nC4, iC5, nC5 & neoC5
Total Sulphur ppm
Ethyl Mercaptan/ H2S
Non Volatile Residue Evaporated Temperature 95% max
Copper Strip Corrosion
Free Water Content
Total Aromatic Hydrocarbons
Total Unsaturated Aliphatic Hydrocarbons
Total unsaturated Hydrocarbons
Residual Matter residue Evaporated Temperature 95% max
1,3 Butadine
Moisture content ppm( for Propane only)
Methyl Mercaptan/ Ethyl Mercaptan COS+ SO-2
Acidity of Residue
Gross Heating Values
Average Molecular Weight
ASTM D 1070
ASTM D 1267
ASTM D 2163

ASTM D 5623

ASTM D 2158
ASTM D 1838
Visual
DHA
DHA
DHA
ASTM D 2158
DHA
Meter
ASTM D 5623
ASTM D 974
Calculation
Calculation
LPG Heavy Ends from SRF Testing
PARAMETERS TEST METHODS
Ammonia as N
pH
Oil and Grease
Cadmium
Chromium
Copper
Lead
Nickel
BOD
COD
Total Dissolved Solids
Total Suspended Solids
APHA 4500 NH3
APHA 4500 H+B
APHA 5520 B
APHA 3120 B
APHA 3120 B
APHA 3120 B
APHA 3120 B
APHA 3120 B
APHA 5210 B
APHA 5220 D