LaMotte DC1500 CHLORINE User manual

DC1500 AMMONIA
Ammonia Colorimeter Kit
Code 3241
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CONTENTS
DC1500 Ammonia Nitrogen Kit
Kit Contents.......................................................................................... 5
Accessories .......................................................................................... 5
Ĉ
Introduction.......................................................................................... 6
Application............................................................................................ 6
Range..................................................................................................... 6
Method .................................................................................................. 6
Handling & Preservation .................................................................... 6
Interferences........................................................................................ 6
Analysis
Ammonia Nitrogen .............................................................................. 7
Calibration
Standards ...........................................................................................10
Calibration Procedure.......................................................................10
Set Up
Setting the Clock ...............................................................................14
Logging Data ......................................................................................15
Factory Setup.....................................................................................16
Setting Power Save ...........................................................................16
Setting Backlight Time .....................................................................17
Selecting A Language .......................................................................18
Looping Menus...................................................................................19
Computer Connection
Output..................................................................................................20
Computer Connection.......................................................................20
Battery
Battery/AC Operation........................................................................20
Battery Replacement........................................................................21
Maintenance
Cleaning ..............................................................................................21
Repairs ................................................................................................21
Meter Disposal ...................................................................................22
General Operating Information
Overview..............................................................................................22
General Operating Information .......................................................22
The Keypad .........................................................................................23
The Display and Menus .....................................................................23
Tubes and Chambers.........................................................................25
Sample Dilution Techniques ............................................................26
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General information
Packaging and Delivery ....................................................................26
General Precautions..........................................................................26
Safety Precautions............................................................................27
Limits of Liability ...............................................................................27
Ĉ ....................................................................................28
CE .........................................................................................................29
IP67......................................................................................................29
Warranty .............................................................................................29
Register Your Meter...........................................................................29
Trouble Shooting Guide
Error Messages ..................................................................................30
Calibration ..........................................................................................30
Stray Light ..........................................................................................30
Troubleshooting Guide......................................................................31
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DC1500 AMMONIA NITROGEN KIT
Kit Contents
QUANTITY CONTENTS CODE
30 mL Ammonia Nitrogen Reagent #1 V-4797-G
3 x 30 mL *Ammonia Nitrogen Reagent #2 *V-4798-G
1 Pipet, 1 mL Plastic 0354
1 Colorimeter Tubes, w/caps,set of 6 0290-6
1 Water Sample Collecting Bottle 0688
1 1500 Colorimeter for Ammonia Nitrogen 27926-AM
1 USB Wall Adapter 1721
1 USB Cable 1720
1 DC1500-AM Ammonia Colorimeter, Manual 3241-MN
1 DC1500-AM Ammonia Colorimeter,
Quick Start Guide
3241-QG
ĦĈ
number.
Accessories
DESCRIPTION CODE
Test Tubes, with Caps 0290-6
Replacement Chamber 3-0038
USB Cable 1720
USB Wall Adapter 1721
Car Charger 5-0132
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TEST METHODS SPECIFICATIONS
INTRODUCTION
Ammonia nitrogen is present in various concentrations in many surface and
ground
water supplies. Any sudden change in the concentration of ammonia
nitrogen in a water
supply is cause for suspicion. A product of microbiological
activity, ammonia nitrogen is sometimes accepted as chemical evidence of
pollution when encountered in natural waters.
Ammonia is rapidly oxidized in natural water systems by special bacterial
groups that produce nitrite and nitrate. This oxidation requires that dissolved
oxygen be available
in the water. Ammonia is an additional source of nitrogen
as a nutrient which may
contribute to the expanded growth of undesirable
algae and other forms of plant growth
that overload the natural system and
cause pollution.
APPLICATION
Drinking , surface, and saline waters; domestic and industrial wastes.
RANGE
0 to 5.0 ppm Ammonia Nitrogen
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.
HANDLING & PRESERVATION
Preservation is accomplished by the addition of 2 mL of concentrated H2SO4
at 4°C.
INTERFERENCES
Sample turbidity and color may interfere. Turbidity may be removed by a
Ĉĩ
instrument to 100%T with a sample blank.
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ANALYSIS
PROCEDURE
1. Fill the Water Sample Collecting
Bottle (0688) with sample
water.
2. Press and hold until
colorimeter turns on.
Main Menu
Testing Menu
Editing Menu
12:00:00 001/500
3. Press
ENTER to select Testing
Menu.
All Tests
008 Ammonia-N HR
12:00:00 001/500
4. Scroll to and select 008
Ammonia-N HR from menu.
008 Ammonia-N HR
Scan Blank
Scan Sample
12:00:00 001/500
5. Rinse a clean tube (0290) with
sample water. Fill to the 10 mL
line with sample. Cap and wipe
dry.
Analysis
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6. Insert tube into chamber, close
lid and select Scan Blank.
7. Remove tube from colorimeter.
Add 8 drops of Ammonia
Nitrogen Reagent #1 (V-4797).
Cap and mix.
8. Use 1.0 mL pipet (0354) to add
1.0 mL of *Ammonia Nitrogen
Reagent #2 (V-4798).
9. Cap and invert to mix. Wait
5 minutes for full color
development. Wipe tube dry. 05:00
10. Insert tube into chamber. Close
lid. Select Scan Sample. Record
result as Ammonia-nitrogen.
008 Ammonia-N HR
0.99 ppm
Scan BLank
Scan Sample
12:00:00 001/500
NOTE: The meter will remember the last scanned blank reading. It is not
necessary to scan a blank each time the test is performed. To use the
previous blank reading, instead of scanning a new one, scroll to Scan Sample
and proceed. For the most accurate results, the meter should be blanked
Analysis
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before each test and the same tube should be used for the blank and the
reacted sample.
NOTE: For the best possible results, carry a reagent blank through the
procedure.
After scanning the blank, perform the test procedure on clear,
colorless,
distilled or deioized water. Subtract results of regent blank from all
subsequent test results.
CALCULATIONS
To express results as Unionized Ammonia (NH3):
Unionized Ammonia (NH3) = ppm Ammonia Nitrogen (NH3-N) x 1.2
To express results as Ionized Ammonia (NH4+):
Ionized Ammonia (NH4+) = ppm Ammonia Nitrogen (NH3-N) x 1.3
Ammonia in water occurs in two forms: toxic unionized ammonia (NH3) and
the relatively non-toxic ionized form, ammonium ion (NH4+). This test method
measures both forms as ammonia-nitrogen (NH4-N) to give the total
ammonia-nitrogen concentration in water. The actual proportion of each
compound depends on temperature, salinity, and pH. A greater concentration
of unionized ammonia is present when the pH value and salinity increase.
1. Ĉ
temperature, pH and salinity of the sample.
2. To express the test result as ppm Unionized Ammonia Nitrogen (NH3-N),
multiply the total ammonia-nitrogen test result by the percentage from
the table.
3. To express the test result as ppm Ionized Ammonia Nitrogen (NH4+-N),
subtract the unionized ammonia-nitrogen determined in Step 2 from the
total ammonia nitrogen.
10°C 15°C 20°C 25°C
pH FW1 SW2 FW SW FW SW FW SW
7.0 0.19 0.27 0.40 0.55
7.1 0.23 0.34 0.50 0.70
7.2 0.29 0.43 0.63 0.88
7.3 0.37 0.54 0.79 1.10
7.4 0.47 0.68 0.99 1.38
7.5 0.59 0.459 0.85 0.665 1.24 0.963 1.73 1.39
7.6 0.74 0.577 1.07 0.836 1.56 1.21 2.17 1.75
7.7 0.92 0.726 1.35 1.05 1.96 1.52 2.72 2.19
7.8 1.16 0.912 1.69 1.32 2.45 1.90 3.39 2.74
7.9 1.46 1.15 2.12 1.66 3.06 2.39 4.24 3.43
8.0 1.83 1.44 2.65 2.07 3.83 2.98 5.28 4.28
8.1 2.29 1.80 3.32 2.60 4.77 3.73 6.55 5.32
8.2 2.86 2.26 4.14 3.25 5.94 4.65 8.11 6.61
8.3 3.58 2.83 5.16 4.06 7.36 5.78 10.00 8.18
8.4 4.46 3.54 6.41 5.05 9.09 7.17 12.27 10.10
8.5 5.55 4.41 7.98 6.28 11.18 8.87 14.97 12.40
Analysis
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FOR EXAMPLE:
A fresh water sample at 20°C has a pH of 8.5 and the test result is 1.0 ppm as
total Ammonia-Nitrogen.
1. The percentage from the table is 11.18% (or 0.1118).
2. 1 ppm total Ammonia-Nitrogen x 0.1118 = 0.1118 ppm Unionized
Ammonia-Nitrogen
3. Total Ammonia-Nitrogen 1.0000 ppm
Unionized Ammonia-Nitrogen – 0.1118 ppm
Ionized Ammonia-Nitrogen = 0.8882 ppm
CALIBRATION
STANDARDS
The meter should be calibrated with ammonia nitrogen standards. The
calibration should be done with a distilled or deionized water blank and one
ammonia nitrogen standard of known concentration. The concentration of the
calibration standard should be similar to the expected concentration of the
sample that will be tested.
CALIBRATION PROCEDURE
1. Ċ to
turn the meter on. The LaMotte
logo screen will appear for about
3 seconds and the Main Menu
will appear.
Main Menu
Testing Menu
Editing Menu
12:00:00 001/500
2. Press
ENTER to select Testing
Menu.
All Tests
008 Ammonia-N HR
12:00:00 001/500
Calibration
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3. Scroll to and select 008
Ammonia-N HR from menu.
008 Ammonia-N HR
Scan Blank
Scan Sample
12:00:00 001/500
4. Rinse a clean tube (0290)
three times with the ammonia
nitrogen standard. Fill to the
10 mL line with the ammonia
nitrogen standard. Cap the tube.
Dry the tube with a lint-free
cloth.
5. Insert tube into chamber, close
lid and select Scan Blank.
6. Remove tube from colorimeter.
Add 8 drops of Ammonia
Nitrogen Reagent #1 (V-4797).
Cap and mix.
7. Use 1.0 mL pipet (0354) to add
1.0 mL of *Ammonia Nitrogen
Reagent #2 (V-4798).
Calibration
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