Drawell DW-DI1500 User manual

DW-DI1500
User Manual
Please read the manual before installation and operation.
Drawell International Technology Limited
Chongqing Drawell Instrument CO,.Ltd
Add:Suite 2705,Building No.12,Shiyou Road No.1,Yuzhong District, Chongqing,China
Tel: [phone]
Shanghai Drawell Scientific Instrument Co.,Ltd
Add : Suite 1117,Lane561XiuChuan Rd.,PuDong New Area,Shanghai,China
Web : www.drawell.com.cn
Email : [email protected]

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Identity Record
Device No.: _______________________
(Displayed on the label at the back of the analyzer)
Date of Receiving & Installing the Analyzer: _______________________
DW-DI1500 -OL TOCAnalyzer Operation Manual B

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Content
IDENTITY RECORD....................................................................................................................................................- 1 -
CONTENT......................................................................................................................................................................- 2 -
REVISION HISTORY RECORDS ..............................................................................................................................- 4 -
EXECUTIVE STANDARD...........................................................................................................................................- 5 -
LAWS & REGULATIONS OBSERVED ....................................................................................................................- 5 -
CONFIDENTIALITY....................................................................................................................................................- 5 -
SERVICE COMMITMENT .........................................................................................................................................- 6 -
ATTENTIONS..............................................................................................................................................................- 10 -
I. PRODUCT INTRODUCTION................................................................................................................................- 12 -
1.1 SYSTEM COMPOSITION..........................................................................................................................................- 12 -
1.2 SHUNT................................................................................................................................................................... - 12 -
1.3 OXIDATION REACTOR ...........................................................................................................................................- 12 -
1.4 CARBON DIOXIDE SENSOR....................................................................................................................................- 13 -
1.5 PERISTALTIC PUMP................................................................................................................................................- 13 -
1.6 CONTROL SOFTWARE ............................................................................................................................................- 13 -
1.7 TEMPERATURE SENSOR......................................................................................................................................... - 13 -
1.8 KEY PARTS............................................................................................................................................................ - 13 -
II. STRUCTURALFEATURES AND OPERATING PRINCIPLE.........................................................................- 14 -
2.1 STRUCTURAL FEATURES........................................................................................................................................- 14 -
2.2 OPERATING PRINCIPLE ..........................................................................................................................................- 15 -
2.3 OPERATING PRINCIPLE OF ONLINE DETECTION DEVICE........................................................................................- 16 -
2.4APPLICATION SCOPE..............................................................................................................................................- 16 -
III. TECHNICAL PARAMETERS AND KEY PARTS ............................................................................................- 17 -
3.1 MAIN TECHNICAL PARAMETERS ...........................................................................................................................- 17 -
3.2 SYSTEM REQUIREMENTS OF THE EXTERNAL COMPUTER ......................................................................................- 18 -
IV. TRANSPORTATION AND STORAGE ...............................................................................................................- 19 -
4.1 TRANSPORTATION..................................................................................................................................................- 19 -
4.2 STORAGE...............................................................................................................................................................- 19 -
V. ENVIRONMENT, SAMPLESAND REAGENTS................................................................................................- 19 -
5.1 ENVIRONMENTAL REQUIREMENTS ........................................................................................................................- 19 -
5.2 SAMPLE TREATMENT.............................................................................................................................................- 20 -
5.3 REAGENT REQUIREMENTS ....................................................................................................................................- 20 -
VI. CONTROLAND MEASUREMENT SOFTWARE TOC-MULTI & SIMULT................................................- 21 -
DW-DI1500 -OL TOCAnalyzer Operation Manual B

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6.1 SOFTWARE INTRODUCTION ...................................................................................................................................- 21 -
6.2 SOFTWARE INITIALIZATION ...................................................................................................................................- 21 -
VII. OPERATION........................................................................................................................................................- 24 -
7.1 MENU....................................................................................................................................................................- 25 -
7.2 SIDEBAR................................................................................................................................................................ - 36 -
7.3 STATION OPERATION INTERFACE........................................................................................................................... - 38 -
VIII. STARTUPTEST.................................................................................................................................................- 44 -
8.1 DEVICE PREPARATION...........................................................................................................................................- 44 -
8.2 OFF-LINE MODE....................................................................................................................................................- 44 -
8.3 ON-LINE MODE.....................................................................................................................................................- 52 -
8.4 PARAMETER SETTING............................................................................................................................................ - 53 -
IX. MAINTENANCE...................................................................................................................................................- 56 -
9.1 REPLACEMENT PERIOD OF CONSUMABLE GOODS................................................................................................. - 56 -
9.2 REPLACE THE UVLAMP ....................................................................................................................................... - 56 -
9.3 REPLACE THE PERISTALTIC PUMP PIPE..................................................................................................................- 57 -
X. FAULT MAINTENANCE.......................................................................................................................................- 58 -
DW-DI1500 -OL TOCAnalyzer Operation Manual B

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Revision History Records
DW-DI1500 -OL TOCAnalyzer Operation Manual B
Document Version Software Version Date
DW-TOC-006 ⑱-2016/A V1.0 September, 2016 -
DW-TOC-006 ⑱-2018/B V1.22 June, 2018

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Service Commitment
Service Commitment:
For the product manufactured and sold by Shanghai Drawell Scientific Instrument Co., Ltd will provide
the high-quality after-sales service, and help users solve various problems.
Warranty Matters:
1. Warranty Time Limit: Drawell Company will provide one-year device warranty period free of charge.
The warranty period will be calculated from your purchase date (the purchase date is subject to the invoice).
2. Special Explanation: Under the following circumstances, the product is out of the warranty & replacement
range.
◎ The product material or manufacturing is not improper;
◎ The product is used under the abnormal condition;
◎ The product is stored under the abnormal condition, exposed in the humid environment, or exposed to
corrosive gases;
◎ The product is repaired without permission, misused, neglected, abused, involved in an accident, or
refitted;
◎ The product is incorrectly installed;
◎ The product is damaged due to force majeure events like flood and lightning stroke;
◎ The product is faulted due to the improper operation by the user, like liquid penetration, extrusion by the
external force, damage arisen from falling down, mildew and corrosion;
◎ The product is naturally consumed, worn and aged;
◎ The product adopts the parts which are not manufactured and sold by Drawell Company;
◎ The product is damaged due to improper transportation;
◎ The outer package of the returned product is not complete and the parts & attached documents are not
complete;
◎ The invoice of the returned product is lost, altered or damaged
◎ The device is out of the warranty period
◎ The consumable materials have been away from the factory for more than three months;
◎ The product is not confirmed by the after-sales service department prior to maintenance and replacement;
◎ The product is not produced and provided by Drawell.
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DW-DI1500 -OL TOCAnalyzer Operation Manual B
Note: Provide the paid service for the user whose product is out of the warranty period. The service charge
shall be determined according to the practical situation. After the user enjoys the maintenance or replacement
service, the warranty time limit cannot be extended, but the user may obtain the ―re-maintenance obligation
guarantee‖. The device parts and spare parts cannot enjoy the above-mentioned the warranty time limit, but the
―re-maintenance obligation guarantee‖may be obtained.
3. Warranty Voucher: Invoice
4. Service Mode: Drawell Company will provide the lifetime product service for the user. The service
mode offered by the company refers to ―technical support service by telephone‖, ―maintenance service by
mail‖, ―part service by mail‖and ―door-to-door service‖. You may select the appropriate mode to enjoy the
service.
For any problem you encounter, please call the customer service hotline of Drawell Company at 021-
50966080.
◎Drawell Company provides all customers with the ―technical support service by telephone‖ of the product.
(The service by telephone includes fax, e-mail, etc.)
◎ You may directly send the faulted device or parts to the after-sales service department of Drawell Com-
pany for maintenance. The implementation rules on the maintenance service by mail shall be explained by the af-
ter-sales service department of Drawell Company.
◎ Company may send the spare parts to you in order to solve your urgent needs – part service by mail ―Part
service by mail‖ refers to the service that, when the device is faulted, Drawell Company sends the normal
parts for replacement, and then takes back the faulted parts. The device may enjoy such service within the warranty
period free of charge. Please call the customer service hotline of Tailin Company for maintenance as required.
Note: You need to return the faulted parts within seven days after receiving the normal parts. If you don’t want
return the faulted parts, you may purchase them from Tailin Company.
◎ If you need the door-to-door service, please call the customer service hotline for maintenance. The engineer
will carry out the analysis for your situation and then make the service order for you. If you need the temporary or
urgent door-to-door service, you may apply to the after-sales department of Tailin Company and the expedited
service charge may be required to be paid.
Note:
A. We would like to ask you for your understanding that, for the physical damage, Tailin Company cannot
provide the door-to-door service free of charge.
B. We would like to ask you for your understanding that, for the simple faults involved in the fault solutions
described in the product manual, the company cannot provide the door-to-door service free of charge.
C. Living in the very remote areas (peak, island, forest, etc.), the customer is required to provide the traffic
assistance and the service may be delayed.
D. Even though the door-to-door service is purchased, when the customer needs the urgent or overtime service,
the customer is still required to pay the additional service charge according to the number of times.
E. In order to protect the intellectual property rights, if Tailin engineer finds that the customer opens the main

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DW-DI1500 -OL TOCAnalyzer Operation Manual B
device without permission, the related service will not be provided.
F. In order that other customers may also enjoy the prompt service, please give the necessary assistance so as
to reduce the waiting time when the service personnel cannot enter the site, as well as the stay time after the
maintenance is completed.
Special Attention:
A. We would like to ask you for your understanding that, the ―physical damage‖is not applicable to the
service mode free of charge.
B. During the process of service, the part replacement cannot affect the warranty period of the complete
device.
5. Physical Damage: The following circumstances belong to the ―physical damage‖. For the physical damage,
Drawell Company cannot provide the warranty service free of charge, even though such damage occurs during
the warranty period purchased.
1) The product is faulted due to bad grounding;
2) The product is damaged due to force majeure events like flood and lightning stroke;
3) The product is faulted due to improper operation or maintenance, like liquid penetration, extrusion by the
external force, damage arisen from falling down, mildew and corrosion;
4) The product is naturally consumed, worn and aged;
5) The product is refitted, like drilling and painting;
6) The product’s all or some components are lost.
6. Disclaimer: Except the responsibilities and obligations specified in the Law of China, Drawell Com-
pany
states that it will not undertake any responsibility under the following circumstances.
1) Any joint liability arisen from product fault, including production suspension losses, property losses,
casualties, etc.;
2) Service delay arisen from natural disasters, wars or emergency restrictions by the government;
3) Commodity delay arisen from atrocious weather or carrier reasons;
4) As the misunderstanding that may occur during the language communication process cannot be controlled,
Drawell Company will not be responsible for any consequence arisen from the technical support service
by telephone.
7. Re-maintenance Obligation: For all the service, Drawell Company will provide a certain period
of ―re-maintenance obligation‖guarantee, so that the customer can enjoy the perfect product service.
Within one month after the maintenance service by mail or part service by mail, if the product suffers from the
same problem and such problem doesn’t belong to the physical damage, the after-sales service department of
Drawell Company will provide the same service free of charge.
Complaints and Suggestions:
The after-sales service department of Drawell Company is responsible for acceptance of customer com-
plaints. If

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DW-DI1500 -OL TOCAnalyzer Operation Manual B
you have any complaint or suggestion, please call the customer service hotline of Drawell Company. Drawell Com-
pany apologizes and sympathizes for the problem you encounter. Thank you for your complaints. Your com-
plaints are the concern for Drawell Company, and the best suggestion to promote our work improvement!
Packing List Check Procedure:
Firstly, before use, please check if the actual configuration of the complete device is consistent with the
packing list, and inspect if attached documents are complete. If you have any objection, please immediately contact
our company. If you don’t raise an objection within one week, our company will deem this circumstance as the
default.
Notice: Please do not throw away the original packing carton of the product. If the product is required to be carried
out the maintenance, the product shall be placed in the original packing carton when being returned. This packing
carton has the shake-proof function.
Safety Precautions:
1. The external power supply shall be disconnected before the device is cleaned.
2. It is ensured that the power supply voltage meets the device requirements.
3. The power supply shall be disconnected when the device is not used for a long time.
4. The liquid is not allowed to enter the device case.
5. In order to ensure the safety, the non-professional personnel are not allowed to open the device case. Only
the professional personnel are authorized to open the device case.
6. When the following problems occur, please ask the maintenance personnel to carry out device check.
A. The power cord or socket is damaged.
B. The liquid enters the device.
C. When the device is not normally operated, after the user refers to the product manual, the device is still
not normally operated.
D. The device is damaged.
E. There are abnormal signals on the device.
7. Avoid collision and knock during the process of transportation.
8. Pay attention to all warnings and precautions.

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Attentions
In order to ensure your safety and avoid unnecessary losses, before the unpacking, installation and
operation of the device, please carefully read this operation manual, and especially pay attention to the
explanation information on dangerous & cautious matters. Otherwise, it may lead to operating personnel
injury and device damage.
Follow all safety tips described in this manual, and pay attention to all information & tips displayed on
the control software interface.
1. Installation and Debugging
Before the first startup (debugging), or after the device is not used for a long time or the device is
carried out the maintenance, the operator shall ensure that the device and its protective device are in good
condition.
2. Safety Guide for Parts
As the protective glass of the UV reactor is used to protect the operator from ultraviolet radiation,
please do not remove or destroy the protective glass during the process of operation.
Notice: Please do not stare at the protective glass for a long time, so as to avoid affecting the
vision!
Before the UV lamp or peristaltic pump pipe is replaced, the power supply shall be
disconnected, so as to avoid electric shock risk.
3. Safety Guide for Repair and Maintenance
3.1 The maintenance personnel or authorized professional personnel who don’t belong to our
company are not allowed to remove the parts & circuit boards in the device case. Otherwise, the
personnel involved in this mater shall be responsible for the device damage consequences.
3.2 This product needs the I-grade safety protection. The power supply must be reliably grounded.
Otherwise, it may lead to electric shock accidents or device damage.
3.3 Please use the fuse with the same specification, so as to avoid short circuit or device damage.
3.4 Before the on-line mode is used, it is required to wash the pipe and calibrate the device in the
off-line mode.
3.5 After the device is used to test the high-concentration water sample, it is required to wash the
pipe with the high-purity water or deionized water with low organic carbon concentration, and the
washing time refers to the manual.
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3.6 When the device is used, if the water sample contains visible insoluble particles, please carry
out the pretreatment for the sample, so as to avoid that the pipe in the device is blocked. If the
content of suspended solid is very high in the water sample which is carried out the on-line test, it
is required to regularly replace the filter.
DW-DI1500 -OL TOCAnalyzer Operation Manual B

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DW-DI1500 -OL TOCAnalyzer Operation Manual B
I. Product Introduction
DW-DI1500-OL TOC analyzer is specially used to test the total organic carbon in purified wa-
ter, water for injection, ultrapure water and other deionized water.
The device is controlled by the software installed on the computer, so as to carry out the
analysis and processing for data.
1.1 System Composition
DW-DI1500-OL TOC analyzer is composed of 5 main parts.
(1) Shunt
(2) Oxidation reactor
(3) Carbon dioxide sensor
(4) Peristaltic pump
(5) Control software installed on the external computer TOC-Multi & Simult
1.2 Shunt
The water sample enters the device through the sample inlet pipe. Then, it is divided into two equal
flow paths. One passes through the delay coil and enters the carbon dioxide sensor, and the signal value of
the water sample which is not oxidized may be tested. The other passes through the oxidation reactor, and
enters the carbon dioxide sensor after the organic substance is decomposed into carbon dioxide under the
photo-catalytic oxidation of the UV lamp, and the signal value of the water sample which is oxidized may
be tested.
1.3 Oxidation Reactor
The oxidation reactor is composed of the UV lamp and quartz glass. The UV radiation source is
directly placed in the reactor. The wavelength adopted by the UV lamp selects 185nm and 254nm, so as to
ensure high radiation density and effective decomposition capacity.
The device uses the UV ray to oxidize an organic compound into carbon dioxide. The oxidation
reactor is a UV lamp wrapped by the spiral quartz tube. The UV lamp can emit 185nm & 254nm UV ray, so
that the water is carried out the photolysis.
H2O + hν(185nm) OH·+ H·
The hydroxyl radical (OH·) can completely oxidize an organic compound into carbon dioxide.

HTY-DI1500 -OL TOC Analyzer Operation Manual B
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Organic Substance + OH·CO2 + H2O
1.4 Carbon Dioxide Sensor
The device has two carbon dioxide sensors which are composed of sensor and temperature sensor.
When the sample is measured, the double-precision technology is adopted, so as to achieve automatic
calibration and temperature compensation.
1.5 Peristaltic Pump
The peristaltic pump is located at the rear end of the device. Its purpose is that, for each measurement,
the sample solution is transported to the shunt by the pump, until the liquid is discharged to the liquid waste
bottle.
1.6 Control Software
The control software is installed on the computer (provided by the user company), offers the data
processing, and ensures the test data completeness, traceability, and electronic signature, as well as the
security permission confirmation of computer system.
1.7 Temperature Sensor
The test unit is equipped with the temperature sensor which is used to measure the environmental
temperature in the test unit.
1.8 Key Parts
No.
Name
Specification
Place of Production
1
UV Lamp
UV-2, 185nm, 254nm
China
2
Teflon Pipe
Outer Diameter 1/16" ×Inner Diameter
0.02"(0.75mm)
USA
3
Peristaltic Pump Pipe
Inner Bore 0.8mm ×Wall Thickness 1.6mm UK
Watson-Marlow
UK

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II. Structural Features and Operating Principle
2.1 Structural Features
Figure 2-1 Front View of the Device
Figure 2-2 Side View of the Device
4-20mA Output
Alarm Connector
Communication Interface
Online/Offline Changeover Valve
Power Supply Connector
Observation Hole
of the UV Lamp
Running Indicator
Upper-end
Cover Plate
Alarm Indicator
Observation hole of
pump
Observation hole of sample
Sample Inlet Pipe of the
Device
waste liquid tube
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Figure 2-2 On-line sampler diageram
2.2 Operating Principle
1
2
3
3
4
5
试样 废液
1 —Spiral Quartz Glass Tube 2 —UV Lamp 3 —Sensor
4 —Delay Coil 5 —Peristaltic Pump
Figure 2-3 Schematic Diagram of the Operating Principle
The water sample enters the device through the inlet. Then, it is divided into two equal flow paths.
One passes through the delay coil 4 and enters the sensor 3, and the response value of the sample which is
not oxidized may be tested. The other passes through the spiral quartz glass tube 1, and enters the sensor 3
after the organic substance in the water is decomposed into carbon dioxide under the irradiation of the UV
lamp 2, and the response value of the sample which is oxidized may be tested. According to the difference
Sample
Waste Liquid
screw
Watch window
pitcher
Miniature shunting valve
Overflow
Online entrance
Exit
Off-line entrance
Injection tube
Switch valve
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between the response values before and after UV lamp oxidization, the TOC value may be obtained by
using the corresponding formula. Finally, the liquid waste is discharged from the drain pipe through the
peristaltic pump 5.
2.3. Operating Principle of Online Detection Device
2.3.1 The fundamental principle of this online detection device is to use online sample injection pipe
connecting to miniature flow divider, then carry out exact split-flow and control. The flow entered into
water tank from split-flow runner is adjusted by rotating miniature flow divider and regulating nut, water
pressure is released after entered into water tank, which makes the pressure of water tank under the normal
atmospheric pressure to facilitate device sampling. Online water intaking pipe gets the water from the
bottom of water tank, while excessive water is discharged through drainage channel of water tank.
2.3.2 Changeover Valve
Rotate the changeover valve to switch the working status. It is online mode as shown in figure 4-3.
When the bulge line on the changeover point at the offline sampling pipe, it is offline detection mode.
Figure 2-5 Offline Mode Figure 2-5 Online Mode
2.4Application Scope
This system is used to test the TOC concentration in purified water, water for injection and high-purity
water of the pharmacy industry; suitable for the TOC test of the ultrapure water in the semiconductor
industry, power plants, research & development institutions, pharmacy industry, chemical industry, etc.
DW-DI1500 -OL TOCAnalyzer Operation Manual B

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Conductivity Test Range
(0~5.100) µS/cm
Suggestion:
TOC value of the
solution to be tested
Best conductivity range
Below 0.200 mg/L
＜1.000µS/cm
（0.200～0.500）mg/L
＜3.000µS/cm
（0.500～0.750）mg/L
＜5.000µS/cm
（0.750～1.500）mg/L
＜5.100µS/cm
DW-DI1500 -OL TOCAnalyzer Operation Manual B
III. Technical Parameters and Key Parts
3.1 Main Technical Parameters
Description
Device Type TOC Analyzer
Model DW-DI1500-OL
Basic Information
Gross Weight 9.5kg
Basic Dimension 34cm×24cm×16cm
Device Connection
Power Supply (100~240) VAC
Power Supply Frequency 50Hz/60Hz
Rated Power 100W
Installation Condition
Environmental Temperature (10~60) ℃
Relative Humidity ≤100%RH
Process Parameter
TOC Test Range (0~1500.0) μg/L
Repeatability Error ≤3%
Maximum Relative Error ±5%
Decomposition Principle for
Organic Substances UV ray decomposition
Wavelength 185nm, 254nm
Test Liquid Temperature (1-99)℃
Control/Assessment Real-time pattern, measurement results and printed reports

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3.2 System Requirements of the External Computer
3.2.1 Database Server Terminal Configuration
Hard Disk
7×24-hour online detection or long-time operation, more than 500G (1T is
recommended).
RAM
4GB and above
CPU
2.0GHz, dual-core and above
Network Card
100Mbps and above
Displayer
1360*768*32bit and above, with Independent Graphic Card (The RAM should be
above 8GB, if it hasn’t independent graphic card)
Mouse
Standard three-key and above
Keyboard
Standard keyboard
3.2.2 Client Terminal Configuration
Hard Disk
500G ordinary disk and above
RAM
4GB and above
CPU
2.0 GHz, dual-core and above
Network Card
100M and above
Displayer
1360*768*32bit and above, with Independent Graphic Card (The RAM should be
above 8GB, if it hasn’t independent graphic card)
Mouse
Standard three-key and above
3.2.3 Computer Software Installation Environment
Server Terminal
Operating System
Windows XP、Windows 7、Windows 8.1、Windows 10 ，Windows Server
2012R2(sever side)，32Bit/64Bit
（The above OS are recommended ，but the home versions are not
recommended）
Server Terminal
System Partition
The hard disk has at least two partitions
Client Terminal
Operating System
Windows XP、Windows 7、Windows 8.1、Windows 10，32Bit/64Bit
（The above OS are recommended ，but the home versions are not
recommended）
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IV. Transportation and Storage
4.1 Transportation
Notice: If there are residues in the pipe when the device is transported, this may lead to the device damage.
Therefore, the device shall be completely emptied before transportation.
Importance: The improper packing material may lead to the part damage!
The device shall be placed in the original package when being transported. The sufficient measures shall be
taken so as to ensure the safety of transportation.
4.2 Storage
The TOC analyzer packed shall be stored in the room which is well-ventilated, shady, cool and clean with
the relative humidity of not more than 80% and has no corrosive gases. The transportaton shall meet the
requirements specified in the order contract, and avoid being collided and affected with damp.
If this device is required to be removed and reinstalled, please contact the device manufacturer and ask the
professional technician to give necessary assistance to solve the related problems.
V. Environment, Samples and Reagents
5.1 Environmental Requirements
The device shall be placed in the environment which is suitable for operation, with constant
temperature & humidity. Avoid direct sunlight and supernormal temperature. If the temperature is too high
(more than 104℉/40℃), this may lead to abnormal operation. If the temperature is too low (less than
50℉/10℃), this may lead to large measurement value errors.
Do not directly place the device beside the door or window.
Do not install the device near the electromagnetic radiation source.
Keep the device away from direct sunlight and irradiators: if necessary, it is required to install the air
conditioner.
Do not obstruct the ventilation opening of the device.
Importance: Take into consideration enough space demands! The space demands include all
constituent parts of workplaces, like computers, displayers, printers and other possible
accessories.
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5.2 Sample Treatment
It is specially noted that, when the ug/L-level concentration solution is prepared and stored, CO2and
organic gases in the air of the laboratory may lead to the solution change. In order to avoid such
circumstance, it is recommended to take the following measures:
The contact area between the solution and air shall be as small as possible;
Avoid that the sample is stored for a long time. Try to immediately use the sample after the sample is
obtained;
The sample storage container shall be cleaned up, so as to avoid the secondary pollution;
According to the requirements of the device test principle, try to avoid testing the water sample which
has high conductivity & high TOC value and contains the visible insoluble particle, so as to protect the
internal test unit of the device from damage. If the conductivity of the water sample is very high, this may
cause that the test value of the device is abnormal. Please wash the pipe with the ultrapure water which has
the conductivity of less than 1.0µS/cm (25℃) and TOC of below 0.04mg/Lfor a long time.
5.3 Reagent Requirements
* Only the clean glass ware can be used to prepare and store the solution.
The used reagent must meet the following requirements:
Use the chemical reagent with analytical purity or higher purity;
The ultrapure water is used for preparation of the standard solution, and regarded as the baseline water
sample: conductivity＜1.0µS/cm(25℃), TOC＜0.04mg/L
When the sample is required to be diluted, the baseline value of the water for dilution shall be considered.
The software TOC-Multi & Simult can carry out the independent measurement and calculation for this
value. The baseline value of the water for dilution usually changes. Therefore, it is required to re-measure
the baseline value of the water before measurement.
Attentions
●The original packing material of the device shall be carefully kept. The
installation shall be carried out by the professional technician of the company.
●If the device is required to be returned and repaired for reasons, the device
must be placed in the original carton so as to avoid that the device is damaged
during the process of transportation.
DW-DI1500 -OL TOCAnalyzer Operation Manual B