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Related Manuals for Dexsil L2000DXT
Summary of Contents for Dexsil L2000DXT
- Page 2 Further, Dexsil Corporation reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of Dexsil Corporation to notify any person of such revision or changes.
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Page 3: Table Of Contents
Care and Maintenance .....................27 General Care ........................27 Electrode Care and Maintenance ..................28 Troubleshooting .......................28 Error Messages......................30 Appendix A: Additional Information Available from Dexsil ........33 Appendix B: Methods Table ....................35 Appendix C: Technical Data ....................37 Appendix D: Program Flow Chart ..................38... -
Page 4: Introduction To The L2000Dxt Analyzer
Introduction to the L2000 Analysis System Congratulations on your purchase of the L2000 Analyzer, a versatile analysis system suitable for the analysis of a wide variety of chlorinated organic compounds in a variety of matrices. The basic principal of the L2000 system is to measure the total organic chlorine content of a sample and equate that to an equivalent concentration of the target or expected analyte. -
Page 5: Chloride Conversion Reaction
The routine analysis of transformer oil requires no sample preparation other than to collect a clean sample without introducing any extraneous sources of chloride into the sample, such as perspiration or road salt. This is important because, for transformer oil, there is no sample cleanup procedure to remove inorganic chloride contamination. -
Page 6: Unpacking
and the resulting corrected chloride value is multiplied by the size and extraction multipliers and divided by the chloride fraction (percent chlorine divided by 100): [Analyte] = ([Cl - [Cl )(size multiplier)(extraction multiplier)/(chlorine fraction) blank The L2000 Analyzer comes preprogrammed with 33 methods providing for analysis of a large number of organo-chlorine compounds in most matrices. -
Page 7: List Of Reagent Options
option chosen at the time of ordering. The options available for the L2000 and the components contained in each are the following: Option 1: Reagents for 40 Oil Test 1 - 250 mL bottle of EXTRACT solution 1 - 250 mL bottle of RINSE solution 1 - 250 mL bottle of CALIBRATION solution 1 - 60 mL bottle of Electrode Filling Solution 1 - tray of 40 empty 20 mL glass vials... -
Page 8: Option 3 - 20 Water Tests
20 - empty 25 mL soil tubes 20 - filter funnels 20 - pipettes 20 - reaction tubes with black dispenser caps 20 - break-top vials containing Soil Extraction Solvent 20 - metal scoops for obtaining soil samples 20 - syringe filters (in a heat sealed foil bag) 1 - set of instructions Reorder Part No: (LP-SR2) Option 3: Reagents for 20 Water Tests... -
Page 9: Initial Set Up
20 - forceps 1 - set of instructions Reorder Part No: (LP-WIP) NOTE: DO NOT STORE REAGENTS IN THE INSTRUMENT CARRYING CASE, AS ANY LEAKS WILL DAMAGE THE INSTRUMENT. Initial Set Up Once the L2000 has been unpacked, the components checked and the contents of the reagent pack verified, the L2000 can be set up for analysis. - Page 10 4. Refill the electrode and make sure that the fill solution is making contact between the black cone and the plastic shell at the bottom of the electrode. If it is not making contact at all points, drain the electrode again and refill. 5.
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Page 11: Basic Operation Of The L2000Dxt
Basic Operation of the L2000 General Information The L2000 meter is equipped with NiMh (Nickel Metal hydride) batteries and can be operated with or without the wall adaptor. A fully charged battery should be sufficient to operate for a full 8-hour day of sample analyses. To preserve the battery, the unit should be plugged into an AC outlet whenever possible. - Page 12 Loop. Once in the loop, the program will prompt the user to chose a method, calibrate the electrode, enter a blank and enter a sample ID. Samples can be analyzed without recalibration for up to an hour or 20 samples whichever comes first. When appropriate, the program will prompt for recalibration.
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Page 13: Navigating The Operating Program
Navigating the Operating Program For an overview of the operating program see Appendix D NOTE: Prior to turning the instrument on, the samples should be already prepared as described Sample Preparation and the extracts allowed to cool for 5 minutes. Turn on the Analyzer by pressing the On Button on the back panel of the instrument. -
Page 14: Calibration
Once in the MAIN MENU, select the desired option to proceed. To begin sample analysis, using the previously chosen Method, select Analysis to enter the Analysis Loop, either choice will open the CHOOSE A METHOD screen: Displayed on the screen, along with the current time, date and temp, will be the current method. After verifying that the displayed method is the desired one, press ENTER to select it to move on to the CALIBRATION screen. -
Page 15: Blank Determination
The acceptable values are 50 to 75 mV. If the reading is outside this range, the screen will display a failure message: Pressing BACK will return to the MAIN MENU screen. If the calibration voltage is acceptable, the “pass” message will appear: Pressing BACK will return to the MAIN MENU and ENTER will jump operation to the BLANK INPUT screen. - Page 16 To use the current stored blank (displayed in the box) simply press Use Current Blank. This will keep the blank that is displayed and no further input is required before entering the ANALYSIS LOOP. To measure a new blank solution or enter a new blank value from the keypad, touch the New Blank button and the NEW BLANK screen will open with 2 choices for entering a new blank.
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Page 17: Analysis
Pressing No Blank will set the current blank to zero and proceed to the SAMPLE ANALYSIS screen. Analysis Sample Preparation Prepare the samples for analysis as described under . Once the samples have been prepared and allowed to cool for at least 5 minutes, the method chosen, and the meter calibrated (including any blank determination), analysis can begin. -
Page 18: Entering Header Information
Without further stirring, press the READ button. The meter will take a series of readings. Once the readings have converged on a constant value, the result will be displayed along with crucial method information. A beeper will sound to indicate that the new value is ready. To analyze additional samples, press the READ button. - Page 19 contaminants. These methods can be modified and custom methods can be built by setting any of the conversion parameters used to convert the chloride reading into an equivalent analyte concentration. Each method requires 7 parameters to be set. These parameters are determined by the composition of the sample and the chemistry of the sample preparation and/or extraction procedures used to introduce the sample into the system.
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Page 20: Data Management
To enter an analyte label a pop-up alpha-numeric data entry screen will open. NOTE: The matrix, units and analyte parameters are merely labels that appear in the data files and on the display; changing them will not affect the calculations or change the actual results. Once all of the parameters have been edited, pressing either the Save New Method or the Save and Analyze buttons will save the new method and exit to the next screen, either back to the MAIN MENU or directly to the CALIBRATION screen respectively. - Page 21 Header Info Op ID Cust ID Job ID Loc ID Ser.# Cal Info mm/dd/yyyy hh:mm Vers - 4 char Temp. C Offset Bl Val Method Extrac. Info Method % Chlorine Size Cor. Mult. Matrix Units Label Sample Tot. Pt. 1 hh:mm 9 Char Samp ID ID Ext.
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Page 22: Change Date Or Time
If the probe is still malfunctioning, the temperature will have to be reset, each time the unit is turned on. Contact DEXSIL for service. (NOTE: The operating range of the meter is 13℃ to 38℃. A missing or broken temperature probe will read -34 and a shorted probe will read 100.) - Page 23 insert the tip of the filling spout of the filling solution bottle into the hole on the side of the electrode. Slowly squeeze the solution into the electrode body until it reaches the level of the hole. Once the electrode has been filled, check the electrode output by going to DIAGNOSTICS from the MAIN MENU.
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Page 24: Sample Preparation
Regardless of the solvent system used, it is important that split samples be periodically analyzed by a reputable laboratory, not only to identify/confirm the Aroclor present, but also to confirm the extraction efficiency of the L2000 solvent system. Contact Dexsil... -
Page 25: Standard Procedure For Soil Analysis
before trying to analyze other types of materials. NOTE: The quality of the final result is directly determined by sampling technique. It is important to use proper protocols for sample collection and homogenization. Standard Procedure for Soil Analysis Using the metal spatula and the portable electronic balance supplied with the kit, weigh out ten grams of the soil into the empty, white-capped test tube. -
Page 26: Two-Step Extraction Procedure For Soil Analysis
Using the 5 mL pipettor, add five milliliters of extract solution to the black-capped tube. Tighten the cap securely and shake vigorously until the foam and dark color disappear. Vent the tube by partially unscrewing the black cap while holding the tube upright. Squeeze the test tube slightly while re-tightening the cap, and shake the tube vigorously for 20 seconds more. -
Page 27: Water Samples
Using the 5 milliliter pipettor from the basic L2000 system, add 5 ml of the L2000 Extraction solution to the black-capped tube. Tighten the cap securely and shake the tube vigorously until the foam and dark color disappears. Vent the tube by partially unscrewing the cap while holding the tube upright. -
Page 28: Wipe Samples
Proceed with the analysis as for an oil sample and quantify using the appropriate L2000 method. Wipe Samples Locate the sealed glass vials containing chromatographic grade hexane and carefully break off the tip. Pour the entire contents into the vial containing the gauze pad. Grasp the soaked gauze pad with the disposable forceps and using an approved technique, wipe an area of 1000 cm . -
Page 29: Care And Maintenance
Care and Maintenance General Care Your L2000 is designed for ease of use and reliability requiring very little maintenance. By following the instructions outlined below, you should be able to obtain maximum life from the electrode and the instrument itself. Do not allow the instrument to get wet. -
Page 30: Electrode Care And Maintenance
2. The power management circuit has been overloaded and is locked due to a severe static electric discharge during the connection of the electrode, wait 10 minutes and try again. Contact Dexsil Corporation for further technical assistance. The instrument turns on but the time and date have been lost. - Page 31 Electrode Care for connecting the electrode. Check electrode output in DIAGNOSTICS Mode. 2. The battery has been disconnected and reconnected, resetting the power management circuit. Proceed as above. The Display turns off when plugging in the electrode. 1. A large static electric discharge has overloaded the power management circuit and the main power or the power to the display back lighting has shutdown.
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Page 32: Error Messages
If this does not solve the problem, polish the electrode as outlined in Care and Maintenance. c. If these procedures do not work, the electrode may need to be replaced. Contact Dexsil for return information. Insufficient quantity of solvent recovered from soil extraction. - Page 33 Check electrode leakage - The electrode is designed to leak a small amount of filling solution through the gap between the sensing pellet and the epoxy body. If the leak rate is too slow or too fast the performance of the electrode may be adversely affected. The electrode leak rate should be between 0.2 cm and 3 cm in 24 hours (as measured from the filling hole to the top of the fill solution).
- Page 34 NOTE: A PDF copy of this manual along with copies of the Reagent SDS and the Dexsil Product Catalogue are included on the USB drive shipped with the L2000...
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Page 35: Appendix A: Additional Information Available From Dexsil
Appendix A: Additional Information Available from Dexsil DTR-10-01 "Alternative Methods of PCB Analysis", Stephen Finch, Dexsil Corporation; Generators Journal, Winter 1990. DTR-10-02 "One Example Where Chromatography May Not Necessarily Be the Best Analytical Method", S.R. Finch, D.A. Lavigne-Dexsil Corporation, R.P.W. Scott, Ph.D.-Georgetown University;... - Page 36 DTR-21-01 “Analysis of Water for PPB Range Chlorinated Organics Using a Total Organic Chlorine Analyzer,” Theodore B. Lynn, Ph.D., Mary Kate Boggiano, Larry M. Sacramone, David L. Balog, Andrew C. Lynn, Dexsil Corporation, Presented at the Waste Testing and Quality Assurance Symposium 2001, August 13-16, 2001, Arlington, VA DTR-21-02 “Low Level Detection of PCE in Monitoring Well Samples Using a Total Organic...
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Page 37: Appendix B: Methods Table
Appendix B: L2000 System Methods Table Compound Blank %Chlorine Size Extraction Matrix Units Analyte Label Method Name Subtract Multiplier Multiplier 1242 OIL Aroclor 1242 AROCLOR 1242 1.13 1.11 Aroclor 1242 AROCLOR 1242 1242 SOIL 1.33 Soil 2 STEP 1242 Aroclor 1242 AROCLOR 1242 Soil 1242 WIPE... - Page 38 DDT SOIL 1.91 Soil Toxaphene TOXAPHENE TOXAPHENE SOIL 1.54 Soil CHLORDANE SOIL Chlordane CHLORDANE 1.42 Soil PCP SOIL PCP* 2.54 Soil TRICHLOR SOIL Trichloro TRICHLOR 1.00 Soil ethylene Trichloro TRICHLOR TRICHLOR WATER 1.86 Water ethylene 111 TRICHL 1,1,1 Tri-chloro 2.03 Water WATER ethane...
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Page 39: Appendix C: Technical Data
Appendix C: Technical Data Physical Size: w = 8.5" (216 mm) d = 5.5" (140 mm) h = 2" (50.8 mm) Weight: 1 lbs. 13 oz. (0.825 kg) Shipping Weight: 9.9 lbs. (4.5 kg) Case: Electrical 6 – 2,400 mAh, 1.2V, Ni-Mh AA cells Battery Power: Line Power: 12 W, 115V or 220V Wall Transformer... -
Page 40: Appendix D: Program Flow Chart
Appendix D: Program Flow Diagram...
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