Nitrates
Nitrites
Poisonous Metals
Free Chlorine
pH Value
Physical Condition of Water
Potable Quality from Chemical Evidence..
10
-0.033 ·
0.033
.0.026
Absent
Absent
Absent
Absent
Absent
Absent
Absent
Absent
Absent
6.9
6.9
7.0
(Sd.) V. C. BRANSON,
Government Analyst.
B.-Water originally derived from Pokfulam reservoir catchment area, just above the reservoir.
WATER ANALYSIS.
GOVERNMENT LABORATORY.
Sample received on the 20th November, 1936.
Hong Kong, 23rd November, 1936.
Particulars (a) Unfiltered water from pit in engine room.
(b) Unfiltered water from cattle shed.
Physical Examination.
Colour (Lovibond Scale) 24 inch stratum. (a)
(6)
Yellow
Red
1.0
1.2
0.5
0.7
Blue
1.6
1.7
Total colour units.
3,1
3.6
Odour
Normal
Normal.
Transparency
100 cms.
100 cms.
Chemical Examination.
(All results expressed as 100,000).
Total Solids in Solution
5.1
5.1
Chlorine
1.10
1.10
Free Ammonia
0.0192
0.0055
Albumenoid Ammonia
0.0011
0.0011
Oxygen Absorbed (in 5 mins @ 100°C.)
0.037
0:037
Nitrates
0.058
0.058
Nitrites
Absent
Absent
Poisonous Metals
Absent
Absent
Free Chlorine
Absent
Absent
pH Value
7.1
7.0
Physical Condition of Water
Potable Quality from Chemical Evidence.....
(Sd) V. C. Branson,
Government Analyst.