WARNING
TM 5-6630-215-12
(f) Hold the comparator up to a light source and view through
the openings in the front of the comparator.
Rotate the comparator
disc until a color match is obtained.
Read the mg/l iron through the
scale window in the front of the comparator.
d.
Dissolved Oxygen Test Kit.
(Fig. 2-9)
(1) Dissolved Oxygen is one of the most important analyses in
determining the quality of natural waters.
The effect of oxidation
wastes on streams, the suitability of water for fish and other organ-
i s ms
and the progress of self-purification can all be measured or
estimated from the dissolved oxygen content.
In aerobic sewage
treatment units, the minimum objectionable odor potential, maximum
treatment efficiency, and stabilization of wastewater are dependent on
maintenance of adequate dissolved oxygen.
Frequent dissolved oxygen
measurement is essential for adequate process control.
Do not allow reagent to come in contact with skin
or eyes.
Do not ingest.
Chemical reagents are
corrosive or poisonous or both.
Sulfuric acid is
a strong acid.
Alkaline Potassium Iodide Solution.
For test pur-
poses only.
Corrosive Alkali.
May cause severe
burns - avoid breathing vapors - not for internal
use.
In case of contact with skin or eyes, flush
well with water; for eyes, get medical attention.
If swallowed, call physician at once.
Give large
amounts of dilute (1:4) vinegar, lemon, or grape-
fruit juice.
Follow with milk or raw egg whites
beaten in water.
Sulfuric Acid.
For test purpose only.
Corrosive
acid.
May cause burns - avoid breathing vapors.
Not for internal use.
In case of contact with
skin or eyes, flush well with water, call a phy-
sician at once.
Do not induce vomiting.
Give
milk of magnesia with large amounts of water.
Follow with milk or raw egg whites beaten in
water.
Keep away from children.
Sodium Thiosulphate and Manganese.
Sulfate re-
agents.
For test purpose only, do not ingest.
If ingested induce vomiting.
2-26
