LaMotte DC1500 CHLORINE User manual

DC1500 MOLYBDENUM
Molybdenum Colorimeter Kit
Code 3246
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CONTENTS
DC1500 Molybdenum Kit
nKit Contents.......................................................................................... 5
nAccessories .......................................................................................... 5
Test Method Specifications
nIntroduction.......................................................................................... 6
nApplication............................................................................................ 6
nRange..................................................................................................... 6
nMethod .................................................................................................. 6
nHandling & Preservation .................................................................... 6
nInterferences........................................................................................ 6
Analysis
nMolybdenum......................................................................................... 7
Calibration
nStandards ............................................................................................. 9
nCalibration Procedure......................................................................... 9
Set Up
nSetting the Clock ...............................................................................13
nLogging Data ......................................................................................14
nFactory Setup.....................................................................................15
nSetting Power Save ...........................................................................15
nSetting Backlight Time .....................................................................16
nSelecting A Language .......................................................................17
nLooping Menus...................................................................................18
Computer Connection
nOutput..................................................................................................19
nComputer Connection.......................................................................19
Battery
nBattery/AC Operation........................................................................19
nBattery Replacement........................................................................20
Maintenance
nCleaning ..............................................................................................20
nRepairs ................................................................................................20
nMeter Disposal ...................................................................................21
General Operating Information
nOverview..............................................................................................21
nGeneral Operating Information .......................................................21
nThe Keypad .........................................................................................22
nThe Display and Menus .....................................................................22
nTubes and Chambers.........................................................................24
nSample Dilution Techniques ............................................................25
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General information
nPackaging and Delivery ....................................................................25
nGeneral Precautions..........................................................................25
nSafety Precautions............................................................................26
nLimits of Liability ...............................................................................26
nSpecifications ....................................................................................27
nCE .........................................................................................................28
nIP67......................................................................................................28
nWarranty .............................................................................................28
nRegister Your Meter...........................................................................28
Trouble Shooting Guide
nError Messages ..................................................................................29
nCalibration ..........................................................................................29
nStray Light ..........................................................................................29
nTroubleshooting Guide......................................................................30
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5
DC1500 MOLYBDENUM KIT
Kit Contents
QUANTITY CONTENTS CODE
60 mL *Mo Buffer *3997-H
2 x 30 mL *Molybdenum Oxidizing Reagent *6485-G
2.5 *Molybdenum Indicator Powder *6486-S
1 Spoon 0.05 , plastic 0696
2 Pipets, 1.0 mL, plastic, w/cap 0354
1 Colorimeter Tubes, w/caps, set of 6 0290-6
1 Water Sample Collecting Bottle 0688
1 1500 Colorimeter for Molybdenum 27926-MB
1 USB Wall Adapter 1721
1 USB Cable 1720-01
1 DC1500-MB Molybdenum Colorimeter, Manual 3246-MN
1 DC1500-MB Molybdenum Colorimeter,
Quick Start Guide
3246-QG
*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 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 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: After use, return *Mo Buffer (3997) to zipper top storage bag to reduce
exposure to corrosive reagent.
Accessories
DESCRIPTION CODE
Test Tubes, with Caps 0290-6
Replacement Chamber 3-0038
USB Cable 1720-01
USB Wall Adapter 1721
Car Charger 5-0132
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TEST METHODS SPECIFICATIONS
INTRODUCTION
Molybdenum occurs naturally in the earth’s crust as molybdenite and
wolfenite, and is an important element in many biochemical reactions,
including nitrogen fixation. In industrial processes, such as the operation of
boilers and cooling towers, molybdenum, in the form of sodium molybdate, is
used as an environmentally safe corrosion inhibitor.
APPLICATION
Boiler and cooling water
RANGE
0.0 to 50.0 ppm Molybdenum
METHOD
Calcium thioglycolate reacts with molybdenum to give a yellow color with an
intensity proportional to the amount of molybdenum present.
HANDLING & PRESERVATION
Molybdenum samples may be stored in either plastic or glass containers.
INTERFERENCES
Nickel levels less than 50 ppm do not interfere; aluminum levels less than 10
ppm do not interfere; chromate, at higher concentrations, interferes due to
the intense yellow color. Ferrous iron levels below 50 ppm do not interfere,
but low levels of ferric iron will cause a large blank. Highly buffered samples
may exceed the capacity of the system possibly producing inaccurate results.
Add an extra 1.0 mL of *Mo Buffer (3997) to adjust the pH of the sample to
approximately 4.5. Multiply the result in ppm by 1.08.
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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
063 Molybdenum HR
12:00:00 001/500
4. Scroll to and select 063
Molybdenum HR from menu.
063 Molybdenum 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.
Analysis
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6. Use the 1.0 mL pipet (0372) to
add 1 mL of *Mo Buffer (3997).
Cap tube and mix.
7. Use the 1.0 mL pipet (0354)
to add 1 mL of *Molybdenum
Oxidizing Reagent (6485). Cap
and mix. Wipe tube dry.
8. Insert tube into chamber, close
lid and select Scan Blank.
9. Remove tube from colorimeter.
Use the 0.05 g spoon (0696)
to add 0.05 g of *Molybdenum
Indicator Powder (6486).
10. Cap and invert to mix until the
powder dissolves. Solution will
turn yellow if molybdenum is
present.
Analysis
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11. Insert tube into chamber. Close
lid. Select Scan Sample. Record
result as Molybdenum.
063 Molybdenum HR
9.9 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
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.
CALIBRATION
STANDARDS
The meter should be calibrated with molybdenum standards. The calibration
should be done with a distilled or deionized water blank and one molybdenum
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. Press and briefly hold 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
Calibration
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2. Press
ENTER to select Testing
Menu.
All Tests
063 Molybdenum HR
12:00:00 001/500
3. Scroll to and select 063
Molybdenum HR from menu.
063 Molybdenum HR
Scan Blank
Scan Sample
12:00:00 001/500
4. Rinse a clean tube (0290) three
times with the Molubdenum
standard. Fill to the 10 mL line
wth the Molybdenum standard.
5. Use the 1.0 mL pipet (0372) to
add 1 mL of *Mo Buffer (3997).
Cap tube and mix.
6. Use the 1.0 mL pipet (0354)
to add 1 mL of *Molybdenum
Oxidizing Reagent (6485). Cap
and mix. Wipe tube dry.
Calibration
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7. Insert tube into chamber, close
lid and select Scan Blank.
8. Remove tube from colorimeter.
Use the 0.05 g spoon (0696)
to add 0.05 g of *Molybdenum
Indicator Powder (6486).
9. Cap and invert to mix until the
powder dissolves. Solution will
turn yellow if molybdenum is
present.
10. Insert tube into chamber. Close
lid. Select Scan Sample.
063 Molybdenum HR
9.9 ppm
Scan BLank
Scan Sample
12:00:00 001/500
11. Press to scroll to
Calibrate.
063 Molybdenum HR
9.9 ppm
%T/Abs
Calibrate
12:00:00 001/500
Calibration
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