LaMotte STORMWATCH MS4 User manual

STORMWATCH
Code 7449
MS4 WATER SCREENING KIT

2
WATER SCREENING TEST PROTOCOLS FOR STORMWATER MS4 GUIDANCE
USING COLORIMETRIC AND TURBIDIMETRIC TECHNIQUES
OVERVIEW
According the U.S. Census bureau the world’s population went from 2.5
billion in 1950 to 6 billion in 2000 and is on pace to exceed 9 billion by 2050.
We will soon have 3 times the global population we had only in 1950, and
with this growth comes enormous impacts on the surface of our globe. As
buildings and pavement expand so do our obligations to control stormwater
effluents. Urban development creates new pollution, which can either be
washed or directly dumped into storm sewer systems, and ultimately into our
waterways and coastal areas. Storm runoff leaving developed urban areas is
significantly greater in inorganic content than runoff from the same area prior to
development.
Stormwater is typically defined
as water that is created as a
result of a precipitation event.
This water may flow through
any path (gully, stream, conduit,
channel, etc.) or adjacent area
that is subject to overflow or
flood water generated from
that event. This water passes
through a wide variety of natural
or artificial environments, often
sweeping organic and inorganic
constituents into the watercourse
through municipal storm drain
systems. These environments
can include pipeline projects, construction sites, landscaped areas, agricultural
runoff, irrigation ditches, industrial sites, and a variety of other sources. In most
cases this material is eventually fed into a stream, river, or other waterway,
contributing to the overall pollutant load in that body of water.
While onsite sampling and offsite testing can be completed over the course
of a number of days, the source of this outfall continues to contaminate the
watercourse with both inorganic and organic constituents during subsequent
precipitation events. A means is required by which to screen the outfall to
potentially determine its source, the contribution it is making to the pollutant
load, and the proper course of action to take.
Instrumentation and reagent systems are currently available to make
measurements necessary to provide a preliminary screening of the outflow, and
determine whether it is contributing to the overall pollutant load as it relates to
inorganic constituents. In many cases these measurements can be made near
the source, using handheld instrumentation and test kits, which may provide
some indication as to the source and content of the outflow, or provide some
indication of what additional testing is required.

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EXAMPLES OF OUTFLOWS
Outflows attributable to a rainwater event can occur across a number of
different environments.
These include:
•Agricultural runoff
•Industrial sites
•Construction sites
•Irrigation runoff
•Parking lots and pavement
•Other
While illicit discharges of various chemical constituents into stormwater drains
represent a portion of the overall problem, these are not normally defined as
stormwater events. These outflows can contain a wide variety of both inorganic
and organic contaminants, and must be considered when characterizing the
source of outflow. Inorganic constituents can often provide an indicator of such
outflows when used in a manner that takes all indicators into account.
Where there are questions and concerns, either generated through the use
of inorganic indicators, or when there are suspicions regarding organic
contaminants, samples should be sent for further analysis.
While individual test measurements can be effectively used for screening
outflows, long term trends are important after establishing baseline values for
inorganic indicators (and organic indicators as needed).
MAKING MEASUREMENTS
Colorimetric
Colorimetric methods are based on measuring the intensity of color of a
colored target chemical or reaction product. The optical absorbance is
measured using light of a suitable wavelength. The concentration is determined
by means of a calibration curve obtained using known concentrations of the
determinant.
Turbidimetric
Turbidimetric methods (also known as nephelometry) use an instrument
for measuring the concentration of suspended particulates in a liquid. A
nephelometer (turbidimeter) measures suspended particulates by employing
a light beam (source beam) and a light detector set to one side (90 degrees)
and/or directly opposite (180 degrees) the source beam. Particle density is
then a function of the light reflected and/or directed into the detectors from the
particles.
Titrimetric
In volumetric titration, chemicals are analyzed by titration with a standardized

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titrant. The titration endpoint is identified by the development of color resulting
from the reaction with an indicator, by the change of electrical potential or by
the change of pH value.
Ion Selective Electrode
An ISE is a transducer (or sensor) that converts the activity of a specific ion
dissolved in a solution into an electrical potential, which can be measured by a
voltmeter or pH meter. The sensing part of the electrode is usually made as an
ion-specific membrane, along with a reference electrode.
INDICATORS
The US EPA recommends testing for the following indicator parameters, based
on the MS4 (Municipal Separate Storm Sewer System) permitting process:
Ammonia
Ammonia is a good indicator of sewage, since its concentration is much higher
there than in groundwater or tap water. High ammonia concentrations may also
indicate liquid wastes from some industrial sites. Ammonia is relatively simple
and safe to analyze. Some challenges include the tendency for ammonia to
volatilize and its potential generation from non-human sources, such as pets or
wildlife.
Color
Color is a numeric computation of the color observed in a water quality sample,
as measured in cobalt-platinum units (APHA, 1998). Both industrial liquid
wastes and sewage tend to have elevated color values.
Unfortunately, some “clean” flow types can also have high color values. Field
testing has found high color values associated for all contaminated flows, but
also many uncontaminated flows, which yielded numerous false positives.
Overall, color may be a good first screen for problem outfalls, but needs to be
supplemented by other indicator parameters.
Conductivity
Conductivity, or specific conductance, is a measure of how easily electricity can
flow through a water sample. Conductivity is often strongly correlated with the
total amount of dissolved material in water, known as Total Dissolved Solids.
as an indicator depends on whether concentrations are elevated in “natural” or
clean waters. In particular conductivity is a poor indicator of illicit discharge in
estuarine waters or in northern regions where deicing salts are used (both have
high conductivity readings).
Conductivity has some value in detecting industrial discharges that can exhibit
extremely high conductivity readings.
Hardness
Hardness is a measurement of the positive ions dissolved in water and
primarily includes magnesium and calcium in natural waters, but is sometimes
influenced by other metals. Field testing suggests that hardness has limited
value as an indicator parameter, except when values are extremely high or
low (which may signal the presence of some liquid wastes). Hardness may be

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applicable in communities where hardness levels are elevated in groundwater
due to karst or limestone terrain. In these regions, hardness can help
distinguish natural groundwater flows present in outfalls from tap water and
other flow types.
pH
Most discharge flow types are neutral, having a pH value around 7, although
groundwater concentrations can be somewhat variable. pH is a reasonably
good indicator for liquid wastes from industries, which can have very high or
low pH (ranging from 3 to 12). The pH of residential wash water tends to be
rather basic (pH of 8 or 9).
The pH of a discharge is very simple to monitor in the field with low cost test
strips or probes. Although pH data is often not conclusive by itself, it can
identify problem outfalls that merit follow-up investigations using more effective
indicators. Normal rainwater has a pH of approximately 5.6
Potassium
Potassium is found at relatively high concentrations in sewage, and extremely
high concentrations in many industrial process waters. Consequently,
potassium can act as a good first screen for industrial wastes, and can also be
used in combination with ammonia to distinguish wash waters from sanitary
wastes.
Turbidity
Turbidity is a quantitative measure of cloudiness in water, and is normally
measured with a simple field meter. While turbidity itself cannot always
distinguish between contaminated flow types, it is a potentially useful screening
indicator to determine if the discharge is contaminated (i.e., not composed of
tap water or groundwater).

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Test Factor Methodology Action Level
Ammonia
Nitrogen
Ammonia forms a colored complex with Nessler’s
Reagent in proportion to the amount of ammonia
present in the sample. Rochelle salt is added to
prevent precipitation of calcium or magnesium in
undistilled samples.
≥50 mg/L
Color Color is determined by a meter that has been
calibrated with colored standards of known
platinum cobalt concentration. True color, the
color of water in which the turbidity has been
removed, is measured.
≥500 color units
Conductivity Conductivity is determined by measuring the
amount of current conducted by ions in the
sample.
≥2000 μS/cm
Hardness Calcium and magnesium are titrated with EDTA
at a pH controlled by the addition of a buffer. An
indicator shows the equivalence point.
≤10 mg/L as
CaCO3or ≥2,
000 mg/L as
CaCO3
pH The pH meter measures the difference in
potential between the electrode and the reference
electrode and converts the reading to pH units.
≤5 or ≥9
Potassium Potassium reacts with sodium tetraphenylborate
to form a colloidal white precipitate in quantities
proportional to the potassium concentration.
≥20 mg/L
Turbidity The intensity of a light beam passing through
a turbid sample is compared with the intensity
of a light beam passing through a turbidity-free
sample at 180 degrees from the light source.
≥1,000 NTU

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FIELD TEST PROCEDURES
AMMONIA NITROGEN - HIGH RANGE • SMART3 COLORIMETER
Nesslerization Method • Code 3642-SC
QUANTITY CONTENTS CODE
30 mL Ammonia Nitrogen Reagent #1 V-4797-G
2 x 30 mL *Ammonia Nitrogen Reagent #2 *V-4798-G
1 Pipet, 1 mL, plastic 0354
*WARNING: Reagents marked with an * are considered to be potential health hazards.
To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com.
Search for the four digit reagent code number listed on the reagent label, in the contents
list or in the test procedures. Omit any letter that follows or precedes the four digit code
number. For example, if the code is 4450WT-H, search 4450. To obtain a printed copy,
contact LaMotte by e-mail, phone or fax.
Emergency information for all LaMotte reagents is available from Chem-Tel
(US, 1-800-255-3924) (International, call collect, 813-248-0585).
RANGE: 0.00–4.00 ppm Ammonia Nitrogen
MDL: 0.05 ppm
METHOD: Ammonia forms a colored complex with Nessler’s
Reagent in proportion to the amount of ammonia
present in the sample. Rochelle salt is added to prevent
precipitation of calcium or magnesium in undistilled
samples.
SAMPLE HANDLING &
PRESERVATION:
Ammonia solutions tend to be unstable and should be
analyzed immediately. Sample may be stored for 24
hours at 4°C or 28 days at –20°C.
INTERFERENCES: Sample turbidity and color may interfere. Turbidity may
be removed by a filtration procedure. Color interference
may be eliminated by blanking the instrument with a
sample blank.
PROCEDURE
1. Press and hold until colorimeter turns on.
2. Press
ENTER to select TESTING MENU.
3. Scroll to and select ALL TESTS (or another sequence containing 008
Ammonia-N HR) from TESTING MENU.
4. Scroll to and select 008 Ammonia-N HR from menu.
5. Rinse a clean tube (0290) with sample water. Fill to the 10 mL line with
sample.
6. Insert tube into chamber, close lid and select SCAN BLANK. (See Note)

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7. Remove tube from colorimeter. Add 8 drops of Ammonia Nitrogen Reagent
#1 (V-4797). Cap and mix. Wait 1 minute.
8. Use the 1.0 mL pipet (0354) to add 1.0 mL of *Ammonia Nitrogen
Reagent #2 (V-4798). Cap and mix. Allow 5 minutes for maximum color
development.
9. At end of the 5 minute waiting period, immediately mix, insert tube into
chamber, close lid and select SCAN SAMPLE. Record result as ppm
ammonia nitrogen.
10. Press to turn the colorimeter off or press the EXIT exit to a previous
menu or make another menu selection.
NOTE: ppm = mg/L
NOTE: It is strongly suggested that a reagent blank be determined to account
for any contribution to the test result by the reagent system. To determine the
reagent blank, follow the above test procedure to scan a distilled or deionized
water blank. Then follow the above procedure to perform the test on a distilled
or deionized water sample. This test result is the reagent blank. Subtract
the reagent blank from all subsequent test results of unknown samples. It
is necessary to determine the reagent blank only when a new lot number of
reagents is obtained.
NOTE: If a test result using the SMART3 Colorimeter gives an over range
message then the the sample must be diluted. The test should be repeated on
the diluted sample to obtain a reading which is in the concentration range for
the test. See page 26.

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COLOR • SMART3 COLORIMETER
Platinum Cobalt Method • No Reagents Required
RANGE: 0–1000 color units
MDL: 20 Cu
METHOD: Color is determined by a meter that has been calibrated
with colored standards of known platinum cobalt
concentration. True color, the color of water in which the
turbidity has been removed, is measured.
SAMPLE HANDLING &
PRESERVATION:
Collect all samples in clean glassware. Determine color
as soon as possible to avoid biological or chemical
changes that could occur in the sample during storage.
INTERFERENCES: Turbidity will interfere. Filter before testing.
PROCEDURE
1. Press and hold until colorimeter turns on.
2. Press
ENTER to select TESTING MENU.
3. Select ALL TESTS (or another sequence containing 033 Color) from
TESTING MENU.
4. Scroll to and select 033 Color from menu.
5. Rinse a tube (0290) with color-free water (distilled or deionized water). Fill
to 10 mL line with color-free water.
6. Insert the tube into chamber, close lid and select SCAN BLANK.
7. Remove tube from colorimeter. Empty tube.
8. Rinse tube with sample water. Fill to 10 mL line with water sample.
9. Insert tube with sample water, close lid and select SCAN SAMPLE. Record
result in color units.
10. Press to turn the colorimeter off or press EXIT to exit to a previous
menu or make another menu selection.
NOTE: If a test result using the SMART3 Colorimeter gives an over range
message then the the sample must be diluted. The test should be repeated on
the diluted sample to obtain a reading which is in the concentration range for
the test. See page 26.

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POTASSIUM • SMART3 COLORIMETER
Tetraphenylboron Method Code 3639-SC
QUANTITY CONTENTS CODE
30 mL *Sodium Hydroxide, 1.0N *4004WT-G
5 g *Tetraphenylboron Powder *6364-C
1 Spoon, 0.05 g, plastic 0696
*WARNING: Reagents marked with an * are considered to be potential health hazards.
To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com.
Search for the four digit reagent code number listed on the reagent label, in the contents
list or in the test procedures. Omit any letter that follows or precedes the four digit code
number. For example, if the code is 4450WT-H, search 4450. To obtain a printed copy,
contact LaMotte by e-mail, phone or fax.
Emergency information for all LaMotte reagents is available from Chem-Tel
(US, 1-800-255-3924) (International, call collect, 813-248-0585).
RANGE: 0.0–10.0 ppm Potassium
MDL: 0.8 ppm
METHOD: Potassium reacts with sodium tetraphenylborate to form a
colloidal white precipitate in quantities proportional to the
potassium concentration.
SAMPLE HANDLING
& PRESERVATION:
Store samples in polyethylene bottles, not in soft glass
where leaching of potassium from the glass may occur.
Samples may be acidified to pH 2 with nitric acid, but
should be neutralized before analyzing.
INTERFERENCE: Calcium and magnesium interfere at very high
concentrations. Check for stray light interference (see p. 69).
PROCEDURE
1. Press and hold until colorimeter turns on.
2. Press
ENTER to select TESTING MENU.
3. Select ALL TESTS (or another sequence containing 085 Potassium) from
TESTING MENU.
4. Scroll to and select 085 Potassium from menu.
5. Rinse a clean tube (0290) with sample water. Fill to the 10 mL line with
sample.
6. Insert tube into chamber, close lid and select SCAN BLANK.
7. Remove tube from colorimeter. Add 4 drops of *Sodium Hydroxide, 1.0N
(4004WT). Cap and mix.

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8. Use the 0.05 g spoon (0696) to add one measure of *Tetraphenylboron
Powder (6364). Cap and shake vigorously for 20 seconds until all of the
powder has dissolved. Wait 5 minutes.
9. At end of 5 minute waiting period, mix tube again to suspend any settled
precipitate. Insert tube into chamber, close lid and select SCAN SAMPLE.
Record result as ppm potassium.
10. Press to turn colorimeter off or press EXIT to exit to a previous
menu or make another menu selection.
NOTE: ppm = mg/L
NOTE: For best possible results, a reagent blank should be determined
to account for any contribution to the test result by the reagent system. To
determine the reagent blank, follow the above test procedure to scan a distilled
or deionized water blank. Then follow the above procedure to perform the
test on a distilled or deionized water sample. This test result is the reagent
blank. Subtract the reagent blank from all subsequent test results of unknown
samples. It is necessary to determine the reagent blank only when a new lot
number of reagents are obtained.
For the most accurate results, the sample and reagents should be at 25±4°C.
NOTE: If a test result using the SMART3 Colorimeter gives an over range
message then the the sample must be diluted. The test should be repeated on
the diluted sample to obtain a reading which is in the concentration range for
the test. See page 26.

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TURBIDITY • SMART3 COLORIMETER
Absorption Method • No Reagents Required
RANGE: 0–500 FAU (Formazin Attenuation Units)
MDL: 3 FAU
METHOD: Absorptimetric, 180° detector
SAMPLE HANDLING &
PRESERVATION:
Measure sample as soon as possible after collection.
INTERFERENCES: Check for stray light interference.
PROCEDURE
1. Press and hold until colorimeter turns on.
2. Press
ENTER to select TESTING MENU.
3. Select ALL TESTS (or another sequence containing 095 Turbidity) from
TESTING MENU.
4. Scroll to and select 095 Turbidity from menu.
5. Rinse a clean tube (0290) with deionized water (turbidity free). Fill to the 10
mL line with deionized water.
6. Insert tube into chamber, close lid and select SCAN BLANK.
7. Rinse a second clean tube (0290) with sample water. Fill to the 10 mL line
with sample. Cap tube. Wipe off excess water and fingerprints. Shake to
resuspend particulate matter. Remove all bubbles before measurement.
8. Insert tube into chamber, close lid and select SCAN SAMPLE. Record
result in FAU. Turbidity measurements should be taken as soon as possible
after sample has been collected.
9. Press to turn colorimeter off or press EXIT to exit to a previous
menu or make another menu selection.
NOTE: FAU = NTU
NOTE: For the most accurate results, the sample should be at 25±4°C.
NOTE: If a test result using the SMART3 Colorimeter gives an over range
message then the the sample must be diluted. The test should be repeated
on a sample diluted with low turbidity water to obtain a reading which is in the
concentration range for the test. See page 26.

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TOTAL HARDNESS • DIRECT READING TITRATOR
Direct Reading Titrator, 0-200 ppm
QUANTITY CONTENTS CODE
15 mL *Hardness Reagent #5 *4483-E
50 Hardness Reagent #6 Tablets 4484A-H
60mL Hardness Reagent #7 4487DR-H
1 Test Tube, 5-10-12.9-15-20-25 mL, glass, w/cap 0608
1 Direct Reading Titrator, 0-200 Range 0382
1 Pipet, 0.5 mL, plastic 0353
*WARNING: Reagents marked with an * are considered to be potential health hazards.
To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com.
Search for the four digit reagent code number listed on the reagent label, in the contents
list or in the test procedures. Omit any letter that follows or precedes the four digit code
number. For example, if the code is 4450WT-H, search 4450. To obtain a printed copy,
contact LaMotte by e-mail, phone or fax.
Emergency information for all LaMotte reagents is available from Chem-Tel
(US, 1-800-255-3924) (International, call collect, 813-248-0585).
To order individual reagents or test kit components, use the specified code
number.
NOTE: The Titrator is calibrated in terms of total hardness expressed as parts
per million (ppm) calcium carbonate (CaCO3). Each minor division on the
Titrator scale equals 4 ppm CaCO3.
PROCEDURE
1. Fill the test tube (0608) to 12.9 mL line with sample water.
2. Add five drops of *Hardness Reagent #5 (4483). Mix.
3. Add one Hardness Reagent #6 Tablet (4484A). Cap and swirl until tablet
disintegrates. Solution will turn red if hardness is present. If solution is blue
there is no measurable amount of hardness.
4. Fill the Direct Reading Titrator (0382) with Hardness Reagent #7 (4487DR).
Insert Titrator in the center hole of the test tube cap.
5. While gently swirling the titration tube, slowly press the plunger to add
Hardness Reagent #7 (4487DR) until the red color changes to blue. Read
the test result directly from the scale where the large ring on the Titrator
meets the Titrator barrel. Record as ppm Total Hardness as CaCO3.
EXAMPLE: Plunger tip is 3 minor divisions below line 80.
Test result is 80 plus (3 divisions x 4) equals 92 ppm.6.

14
6. If the plunger tip reaches the bottom line on the Titrator scale (200 ppm)
before the color change occurs, refill the Titrator and continue the titration.
When recording the test result, be sure to include the value of the original
amount of reagent dispensed (200 ppm).
7. To convert ppm Hardness to grains per gallon (gpg), multiply by 0.058.
Record as gpg Hardness as CaCO3.
gpg CaCO3= ppm CaCO3x 0.058
ANALYSIS OF HARDNESS IN SALT WATER
When waters containing very high levels of mineral salts, including sea and
estuary waters are tested the sample must be diluted before titration. This test
kit contains a calibrated pipet for performing the dilution described below.
1. Use the 0.5 mL pipet (0353) to transfer 0.5 mL of the salt water sample to
the test tube (0608).
2. Dilute to the 12.9 mL line with distilled water (a 1 to 25.8 dilution).
3. Follow Steps 2 through 5 above. Multiply the Titrator reading by 25.8.
Record as ppm Total Hardness as CaCO3.

15
CONDUCTIVITY • TRACER
For complete instructions, see the Tracer manual.
Before first use, hold the meter by the top battery compartment and swiftly
tap the back of the meter downward into your palm (not a hard surface). This
assures that the internal electrolyte moves to the very tip of the electrode. The
electrolyte should fill the circular junction window at the tip of the electrode.
Before first use or after storage, soak the electrode in tap water or pH buffer
solution for about 10 minutes.
CALIBRATION
Meter accuracy verification should be performed on a periodic basis as
needed. If calibration is required, the meter must be in the conductivity
mode to perform all calibrations for conductivity, TDS and salinity. The
meter can perform calibrations and store the data for each of the three ranges–
low, medium and high. The automatic calibration recognition procedure will
recognize conductivity standards of 84μS (Low), 1413μS (Medium) or 12,880μS
(12.88mS) (High). Always calibrate in the range closest to the expected
measurement value. For salinity samples within the range of 1.00 to 9.99
ppt salinity, calibrate with a 12,880μS calibration standard.
1. Fill a sample cup to 20 mL line with a conductivity standard.
NOTE: The meter allows for a 1, 2, or 3 point calibration. If calibration is
done for more than one point, the lowest concentration should be done
first to obtain the best accuracy. Calibrate the ranges from low to high
2. Press the ON/OFF button to turn the TRACER on. Insert the electrode
into the standard. Tap or stir the sample with the Tracer to dislodge air
bubbles.
3. Press and hold the CAL/RECALL button for approximately 2 seconds until
the display begins to flash.
4. The meter will automatically recognize and calibrate to the conductivity
standard. The display will briefly indicate “SA” and “End” and then return to
the measurement mode.
NOTE: “SA” will not appear if the calibration fails.
5. The calibration range indicator will appear on the display for each range
that is calibrated during a power on cycle.
H
M
LLow Range, 84 μS/cm
Medium Range, 1413 μS/cm
High Range, 12.88 mS/cm (12,880 μS/cm)

16
MEASUREMENT
1. For small samples fill a sample cup to the 20 mL line with the test sample.
Sample depth must be greater than or equal to 1.5 inches.
2. Press the ON/OFF button. (8888 and then SELF CAL will appear in the
display during the initial diagnostics).
3. Press and hold the MODE/HOLD button to scroll to the μs or ms mode.
4. Immerse the TRACER electrode in the sample. Make sure the electrode is
completely submersed.
5. Slowly stir the sample with the TRACER to remove air bubbles.
6. The meter will automatically auto-range to the proper range and then
display the reading. The display will flash “0000” while auto-ranging.
7. Rinse the electrode in distilled water. Replace the cap.

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pH • TRACER
For complete instructions, see the Tracer manual.
Before first use, hold the meter by the top battery compartment and swiftly
tap the back of the meter downward into your palm (not a hard surface). This
assures that the internal electrolyte moves to the very tip of the electrode. The
electrolyte should fill the circular junction window at the tip of the electrode.
Before first use or after storage, soak the electrode in tap water or pH buffer
solution for about 10 minutes.
For the most accurate results, allow sufficient time for the temperature of the
probe to reach the temperature of the sample before calibrating. This will be
indicated by a stable temperature reading on the display.
CALIBRATION
The TRACER can be calibrated at 1, 2 or 3 points. For the most accurate
results with a two point calibration, calibrate the TRACER with a pH 7 buffer
first, then calibrate with either a pH 4 or pH 10 buffer whichever is closest to the
pH value of the sample to be tested. When performing a three point calibration,
calibrate with the pH 7 buffer first, followed with the pH 4 buffer and then the
pH 10 buffer.
Preparation of Buffers
1. Fill a sample cup with 20 mL of distilled or deionized water.
2. Add one buffer tablet:
pH 4.0 Code 3983A
pH 7.0 Code 3984A
pH 10.0 Code 3985A
3. Use the tablet crusher (0175) to crush the tablet. Stir until the tablet has
disintegrated.
NOTE: Buffers should be prepared fresh daily.
Calibration
1. Fill a sample cup to the 20 mL line with a buffer solution.
2. Press the ON/OFF button to turn the TRACER ON.
3. Place the electrode in the buffer solution. Press and hold the CAL/RECALL
button until “CAL” appears in the lower display. The meter will automatically
recognize the buffer and calibrate itself to that value. The circled number
on the display will match the value of the buffer.
NOTE: If the buffer solution is more than 1 pH unit off from 4, 7, or 10, or
the electrode slope is low, the meter will assume that there is an error and
the calibration will be terminated. END will be displayed.
4. During the calibration the pH value on the display will flash. When the
calibration is complete, the TRACER will display “SA” and “End” and return
to normal operation.

18
5. The appropriately circled indicator (L, M or H) will appear on the display
when a calibration has been completed within one power on cycle.
6. For a two or three point calibration, repeat steps 1-5 with the remaining
buffers.
7. When the TRACER is turned off, the circled indicator configuration and the
calibration data will be memorized.
MEASUREMENT
1. For small samples fill a sample cup to the 20 mL line with the test sample.
Sample depth must be greater than or equal to 1.5 inches.
2. Press the ON/OFF button. (8888 and then SELF CAL will appear in the
display during the initial diagnostics).
3. Press and hold the MODE/HOLD button to scroll to the pH mode.
4. Immerse the TRACER electrode in the sample. Make sure the electrode is
completely submersed.
5. Slowly stir the sample with the TRACER to remove air bubbles.
6. The reading will flash until it has stabilized. This may take several seconds
depending on the buffer capacity of the sample.
7. Rinse the electrode in distilled water. Replace the cap.

19
SMART3 GENERAL INFORMATION
For more information see SMART3 instruction manual.
EPA COMPLIANCE
The instrument is an EPA-Accepted instrument. EPA-Accepted means that
the instrument meets the requirements for instrumentation as found in
test procedures that are approved for the National Primary Drinking Water
Regulations (NPDWR) or National Pollutant Discharge Elimination System
(NPDES) compliance monitoring programs. EPA-Accepted instruments may
be used with approved test procedures without additional approval.
CE COMPLIANCE
The instrument has earned the European CE Mark of Compliance for
electromagnetic compatibility and safety. The Declaration of Conformity for the
instrument is available at www.lamotte.com.
This device complies with Part 15 of the FCC rules. Operation is subject to the
following two conditions (1) This device may not cause harmful interference,
and (2) this device must accept any interference received, including interference
that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for
a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interferences in which case the user
will be required to correct the interference at his own expense.
IP67 CERTIFICATION
The instrumentmeets IP67 standards for protection against dust and immersion
only when the USB port plug is in place. Documentation is available at www.
lamotte.com.

20
SMART3 GENERAL OPERATING PROCEDURES
THE KEYPAD
The keypad has 6 buttons which are used to perform specific tasks.
This button will scroll up through a list of menu
selections.
ENTER The button is used to select choices in a menu viewed in
the display.
This button controls the backlight on the display.
This button will scroll down through a list of menu
selections.
EXIT This button exits to the previous menu.
This button turns the meter on or off.


EXIT
ENTER
THE DISPLAY & THE MENUS
The display has a header line at the top and a footer line at the bottom. The
header displays the title of the current menu. The footer line displays the time
and the date, the data logger status and the battery status. The menu selection
window is in the middle of the display between the header and the footer. Some
of the menus are looping menus. The top and bottom menus are connected
in a loop. Scrolling down past the bottom of the menu will lead to the top of
the menu. Scrolling up past the top of the menu will lead to the bottom of the
menu. A black bar will indicate the menu choice. Pressing ENTER will select the
menu choice that is indicated by the black bar. The EXIT button allows an exit
or escape from the current menu and a return to the previous menu. Pressing
at any time will turn the meter off.