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SULFIDE TEST KIT
Code 4630 | LaMotte Pomeroy Method
QUANTITY CONTENTS CODE
60 mL *Sulfide Test Solution #1 *4633-H
60 mL *Sulfide Test Solution #2 *4634-H
60 mL *Sulfide Test Solution #3 *4635-H
60 mL Sulfide Test Solution #4 4636-H
2 x 100 mL Sulfide Test Solution #4 4636-J
60 mL Sulfide Test Solution #5 4637-S
60 mL Sulfide Test Solution #6 4638-S
60 mL Sulfide Test Solution #7 4639-H
60 mL *Sulfide Test Solution #8 *4640-H
1 Pipet, 7.5 mL, glass, w/bulb 0332
1 Pipet, glass, w/cap 0344
2 Pipets, 0.5 mL, plastic 0353
1 Pipet, 1.6 mL, glass 0305
2 Pipets, 0.5 mL, plastic w/caps 0369
4 Test Tubes, Pomeroy, glass, w/caps 0227
1 Bottle, Flocculating, 100 mL,
w/stopper
To order individual reagents or test kit components, use the
specified code number.
1188
TEST RANGE: 0-18 ppm Sulfide. Concentrations above 18 ppm Sulfide will require a sample
dilution. Test results should be multiplied by the appropriate dilution factor. Some loss of
sulfide may occur during dilution.
*Reagent is a potential health
hazard. READ SDS
Emergency information:
Chem-
Tel USA 1-800-255-3924
Int’l, call collect, 813-248-0585
TOTAL SULFIDE PROCEDURE
1.
Use the 7.5 mL
pipet (0332) to add
7.5 mL of sample
water to each of
two test tubes
(0227). Mark the
test tubes #1 and
#2.
3.
Use the second 0.5
mL pipet (0353)
to add 0.5 mL
of *Sulfide Test
Solution #2 (4634)
to test tube #2.
Continued on next page...
NOTE
Prevent aeration of the
sample by holding the tip of
the pipet against the inside
wall of the test tube when
adding the sample water.
4.
Use the glass pipet
(0344) to add two
drops of *Sulfide
Test Solution #3 to
each test tube.
2.
Use a 0.5 mL pipet
(0353) to add 0.5
mL of *Sulfide
Test Solution #1
(4633) to test
tube #1.
5.
Cap and invert
both test tubes
several times to
mix.
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6.
Wait 1 minute.
Solution in test
tube #1 will turn
blue if Sulfide is
present.
7.
Use the 1.6 mL
pipet (0305) to add
1.6 mL of Sulfide
Test Solution #4
(4636) to each
tube.
8.
Cap and invert
both test tubes
several times to
mix.
9.
Fill pipet with Sulfide
Test Solution #5.
Hold pipet vertically.
Add one drop to test
tube #2.
12.
Fill pipet with
Sulfide Test
Solution #6. Hold
pipet vertically. Add
one drop to test
tube #2.
15.
Multiply the total number
of drops of Sulfide Test
Solution #6 used by 0.1.
Record as Value B.
10.
Cap and mix.
Compare blue color
to test tube #1.
13.
Cap and mix.
Compare blue color
to test tube #1.
16.
Value A + Value B =
ppm Total Sulfide.
11.
Continue adding
Sulfide Test Solution
#5 one drop at a time.
Cap and mix after
each drop. Count the
total number of drops
needed to APPROACH
color of sample in test
tube #1. Record as
Value A.
14.
Continue adding
Sulfide Test Solution
#6 one drop at a time.
Cap and mix after
each drop. Count
the number of drops
needed to MATCH color
of sample in test tube
#1.
NOTE
This procedure may be
performed using only
Sulfide Test Solution #5 for
an approximate reading.
The procedure may then
be repeated using both
solutions for a precise
result. With practice it
is possible to switch to
Sulfide Test Solution #6
before color match occurs.
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DISSOLVED SULFIDE PROCEDURE
1. Fill amber flocculating bottle (1188) completely by allowing sample to overflow the
bottle and then stoppering.
2. Use the 0.5 mL pipet (0369) to add 0.5 mL Sulfide Test Solution #7 (4639).
3. Use the 0.5 mL pipet (0369) to add 0.5 mL *Sulfide Test Solution #8 (4640). Stopper
bottle, being careful to exclude all air bubbles. Invert rapidly for one minute to flocculate
sample. Wait 15 minutes.
4. Use clear liquid in flocculating bottle. Following Steps 1-16 of the Total Sulfide test
procedure to test for dissolved sulfide. Record result as ppm Dissolved Sulfide.
HYDROGEN SULFIDE PROCEDURE
1. Measure pH of test sample.
NOTE: Reagents or apparatus for determining pH are not included in this kit but may be
ordered from LaMotte Company.
2. Use Dissolved Sulfide test procedure to determine Dissolved Sulfide concentration.
3. Refer to table below to determine the proportions of H2S and HS in Dissolved Sulfide.
pH Correction Factors for Hydrogen Sulfide Determination
pH Factor pH Factor pH Factor pH Factor
5.0 0.99 6.4 0.80 7. 3 0.33 8.4 0.04
5.2 0.98 6.5 0.75 7. 4 0.28 8.6 0.02
5.4 0.97 6.6 0.71 7. 5 0.24 8.8 0.01
5.6 0.96 6.7 0.66 7. 6 0.20 9.0 0.0050
5.8 0.94 6.8 0.62 7. 7 0.17 9.2 0.0032
6.0 0.90 6.9 0.56 7. 8 0.14 9.4 0.0020
6.1 0.89 7. 0 0.50 7. 9 0.11 9.6 0.0013
6.2 0.86 7. 1 0.45 8.0 0.09
6.3 0.79 7. 2 0.38 8.2 0.06
4. Multiply Dissolved Sulfide result by the pH correction factor. Record as ppm Hydrogen
Sulfide.
ppm Hydrogen Sulfide (H2S) = ppm Dissolved Sulfide x pH Correction Factor
TEST EQUIPMENT CARE & MAINTENANCE
1. Carefully wash and rinse all apparatus after each use.
2. Tighten reagent container caps immediately after use. Do not interchange caps.
3. Avoid prolonged exposure of test components to direct sunlight.
4. Avoid extreme high temperatures and protect components from freezing.
5. Keep reagent containers out of reach of young children.
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