9032X
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reagent of diisopropylamine solution should be used. This adjusts the sample pH to
11.2 - 11.5 and enables measurements to be made to concentrations below 0.5ppb.
Concentrated Ammonia Solution - 1 liter
WARNING!
This buffer should only be handled under a fume hood. It causes
burns and is irritating to the eyes, respiratory system and skin. Wear rubber
gloves and eye protection. In warm weather pressure increases in the bulk
container of ammonia and the cap must be released with care.
Note.
Waltron offers Ammonium Hydroxide in a 2.5 liter container. Part
N1234-116.
Diisopropylamine Solution
WARNING!
Diisoproplyamine is an extremely inflammable and irritating
colorless liquid with a strong smell of ammonia. It should be handled with care
at all times. The following points should also be noted:
Avoid breathing vapor and avoid contact with skin and eyes.
Work under a fume hood, wearing rubber gloves and eye protection.
In the event of a fire, extinguish with water spray, foam, dry powder or carbon
dioxide.
If a spill occurs, shut off all possible sources of ignition, and instruct others to
keep at a safe distance. Mop up spill with plenty of water, diluting greatly.
Ventilate the area well to evaporate any remaining liquid and dispel vapor.
Effluent from the analyzer contains diisoproplyamine (if this buffer is used).
Contact with it should also be avoided.
5.2
STANDARD SOLUTIONS
Waltron offers Sodium Standard, 100 ppb, in a 1 gallon container. Part
Number N1234-540.
