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|  MIL-C-48868E (AR)
SODIUM HYDROXIDE - 400 g solid NaOH dissolved in
and
diluted to one liter
THIOSULFATE SOLUTION - 102 g
.5
dissolved
in
and diluted to one liter
SULFURIC ACID - 93-98%
Free
MERCURIC OXIDE
- Reagent grade,
Free
Free
POTASSIUM SULFATE - Reagent grade,
HYDROCHLORIC ACID STANDARD SOLUTION - 0.1N
SODIUM HYDROXIDE STANDARD SOLUTION - 0.1N
BORIC ACID SOLUTION - 4 g
dissolved in 100 ml
METHYL RED INDICATOR - 1 g methyl red dissolved in 200 ml ethyl
alcohol
METHYLENE BLUE INDICATOR - 1 g methylene blue dissolved in
200 ml ethyl alcohol
POTASSIUM HYDROGEN PHTHALATE - Reagent grade
PHENOLPHTHALEIN INDICATOR - 1 g phenolphthalein dissolved in
200 ml ethyl alcohol
KJEL-FAST CATALYST
Apparatus.
Use a Bucchii distillation unit, a CEM Kjel-FAST digester,
or equivalent, a quartz reaction flask, and a distillation
adapter.
Digestion.
Turn of the CEM Kjel-FAST digestion unit and water supply
(The power switch is on the bottom right corner of the back
q
The water spigot is behind the unit.)
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