PendoTECH Single Use UV/VIS/NIR Flow Cell System Model ...pendotech.com/SPECXXX_L-P_UsersGuide.pdf · PendoTECH Single Use UV/VIS/NIR Flow Cell System Revision 1 User Guide P a g

PendoTECH Single Use UV/VIS/NIR Flow Cell System

Model: SPEC-XXXL SPEC-XXXP

User Guide

Revision 1

www.pendotech.com

http://www.pendotech.com/

PendoTECH Single Use UV/VIS/NIR Flow Cell System Revision 1 User Guide

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PendoTECH Single Use UV Flow Cell System

User Guide

Revision 1

Copyright © 2010-2014, PendoTECH All rights reserved. No part of this publication may be reproduced, stored in an electronic retrieval system, or transmitted, in any form or by any means, whether electronic, mechanical, by photocopying, or otherwise, without the written consent of PendoTECH. The information in this User Guide is believed to be accurate and reliable for use and operation of the monitor, however, PendoTECH assumes no responsibility for the use of this product except for what is covered in the Limited Warranty and Terms and Condition of Sale. NOTE: “NOTE” is used to notify the user of installation or operation information which is important but not hazard related.

Warning potential shock hazard. Do not submerge this product. Protect the product before cleaning with any liquids by covering openings that expose the internal components.

Goods and software are not designed, intended or authorized for use as components in life support or medical devices. They are not designed for any application in which the failure of the product could result in personal injury, death or property damage. Notice of Confidentiality The information contained within this document is confidential and proprietary to PendoTECH and may be covered under existing US patents or patents pending. This information shall not be reproduced or further disclosed, in whole or in part, to anyone other than employees of the company purchasing the product without prior written consent from PendoTECH.


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NOTE: Important Safety Guidelines PLEASE READ THE INSTRUCTIONS CAREFULLY BEFORE WORKING WITH THIS PRODUCT! This device has left our facility after careful testing of all the transmitters functions and safety features. The functioning and operational safety of the product can only be ensured if the user observes the usual safety precautions as well as the specific safety guidelines stated in these operating guidelines:

• Before connecting the device to the electrical supply, please ensure that the operating voltage stated on the power supply corresponds to the voltage supplied to the unit.

• The functioning and operational safety of the instrument can only be maintained under the climatic conditions specified in the specification section of this manual • If the instrument is moved from warm surroundings, condensate may form and interfere with the functioning of the instrument. In this event, wait until the temperature of the transmitter equilibrates to the new temperature before putting the transmitter back into operation • Transmitter controls, maintenance and repair work must only be carried out by a suitable qualified technician. • If there is any reason to assume that the product can no longer be employed without a

risk, it must be set aside and appropriately marked to prevent further use. • The safety of the user may be endangered if the instrument:

o is visibly damaged; o no longer operates as specified o has been damaged in transport

• If you are in doubt, the product should be sent back to the factory • The operator of this product must ensure that the following laws and guidelines are observed when using this product around dangerous substances:

o EEC directives o National Fire Protection Association o Safety data-sheets of the chemical manufacturer


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Table of Contents Section 1. Introduction .................................................................................................................... 5

Section 2: Specifications ................................................................................................................. 7

Section 3: Hardware Installation ................................................................................................... 12

Section 4. Instrument Controls .................................................................................................... 15

Section 5. Using the System ......................................................................................................... 16

Section 6. Setting and determining the path-length with Adjustable Pathlength Flow Cell ......... 18

Section 7. Introduction to Absorbance Monitoring ...................................................................... 19

Section 8. Glossary and Description ............................................................................................. 20

Section 9. Handling of Fiber Optic Cables .................................................................................. 21

Section 10. Useful Equations ....................................................................................................... 22

APPENDIX 1: System Engineering Drawings ............................................................................. 23

APPENDIX 2: PRODUCT WARRANTY .................................................................................. 24

APPENDIX 3: Service Information............................................................................................. 25


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Section 1. Introduction In bioprocess operations, the UV absorbance of a liquid solution can identify the absence or presence of the molecule of interest. The measurement, typically at 280nm, is made by a spectrophotometer or photometer either in-line or off-line in a cuvette. But depending on the application, other wavelengths may be used. Near IR measurements such as 880nm can be used to measure turbidity. A collimated beam of light passes through a sample with a defined path length and the absorbance is determined as the ratio of the light applied from the source to what passed through the sample. The combination of the PendoTECH Photometer and the PendoTECH Single Use UV Flow Cell enables the measurement to be made non-invasively. This flow cell contains a special silica glass lens on the wall and compartments to attach the light source and detector. The fluid stream to be measured flows between the lenses by way of tubing attached to the hose barb ends of the flow cell. Even though designed for single use, the design is robust enough to be re-used. With a re-usable cell, the optical couplers are exposed to the fluid and can be cleaned and reused.

Part Numbers*:

SPEC-xxxL Benchtop Photometer with xxx being the wavelength in nm of the light source, 4-20mA output, 2 fiber optic cables, 2 optical couplers to connect to flow cell, 24VDC power supply

SPEC-xxxP Panel mount Photometer with xxx being the wavelength in nm of the light source, 4-20mA output, 2 fiber optic cables, 2 optical couplers to connect to flow cell

SPECPS-N-050 Single Use UV Flow Cell, 1cm path length, non-sterile, polysulphone, 1/2 inch hose barb

SPECSS-N-ADJ-M Stainless steel UV Flow Cell, with nano couplers with 0.05 to 2 mm path length (inlet outlet fittings to be specified by user; fibers ordered separate)

SPEC-xxxP-BOX Photometer with 280nm light source, 2 fiber optic cables, 2 optical couplers to connect to flow cell, mounted with integral display and chart recorder

SPEC-OC-FIBER One Replacement Fiber Optics Cable (3ft / 1M)

SPEC-OC-FIBER-2M One Replacement Fiber Optics Cable (6ft / 2M)

SPEC-OC-FIBER-3M One Replacement Fiber Optics Cable (9ft / 3M)

SPEC-OC-SUT One Replacement Optical Coupler for Single Use Flow Cell

SPEC-OC-MICRO One Replacement Optical Coupler for Stainless flow cell

SPEC-880-1CM Absorbance flow cell, stainless steel with 1 cm path length (with path length adjustable down to 0.5cm)- inlet / outlets must be specified (3/4” sanitary flange, hose barb in sizes: 1/8, 1/4, 3/8, 1/2in)

SPEC-880-6CM Turbidity flow cell, stainless steel with 6.5 cm path length - inlet / outlets must be specified

*most common wavelengths are 280nm and 880nm; other wavelengths from 240nm to 1100nm are available


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The Main Components are as Follows: Photometer:

Flow Cells:


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Section 2: Specifications

Photometer

PendoTECH provides the SPEC-xxx system in two ways: 1) Benchtop unit for laboratory use, 2) Panel mount version for mounting in an appropriate enclosure. They are shown below with the key elements highlighted.

1) Benchtop laboratory unit PDKT-SPEC-xxxL


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Wiring:

2) Panel mount unit PDKT-SPEC-280P

Benchtop Version


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Wiring:

Connector enlarged view:


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Flow Cells Single Use Flow Cell

The single use flow cell with a 1cm path length is shown in the picture to the left with the

tubing installed on the ½ inch hose barb fitting in the middle picture. In the picture on the

right, the optical interface couplers are inserted into the receptacles so the measurement can

be made on the sample flowing through the cell. All polymeric materials in fluid path meet

USP Class VI and it is assembled in an ISO13485 facility. The flow cell may be autoclaved to

121°C or gamma irradiated up to 50KGy.

Stainless 6.5cm

Stainless steel flow cell has 6.5 cm pathlength measured from ends of optical couplers. Couplers are supplied and installed with Teflon ferrules to create water tight connection while allowing removal post use for cleaning. Optical couplers are inserted until permanent stop is reach to ensure 6.5 cm pathlength. Flow cell is supplied with Luer style process connections. Adapters are available to create hose barb connections from the Luer if required. Red protective boots are removed to expose SMA 905 connections to attach end of fiber optic cables.


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Stainless 1 cm

Stainless steel flow cell has 1 cm pathlength (adjustable down to 0.5 cm) measured from ends of optical couplers when installed as follows: coupler is inserted into cell with Teflon ferrules to the point where the end of the coupler is barely visible when looking into the cell thru the flow path openings. Couplers are supplied and installed with Teflon ferrules to create water tight connection while allowing removal post use for cleaning. Flow cell is supplied with hose barb or sanitary flange fittings to connect to process. (Shown in picture with ½” sanitary flange fittings and with optical couplers and fiber optic cables installed).

Stainless Steel Cells with Adjustable Nano Couplers

Refer to Section 6 for detailed instruction on installation of Nano Couplers


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Section 3: Hardware Installation

In addition to the physical, optical, and electrical installation requirements of the unit it is recommended that the unit be placed in a clean, dry area. If the area surrounding the unit exceeds the upper temperature limit of 46 C (115° F), it is recommended that the unit be moved. For units mounted in an enclosure, the enclosure may be purged with clean, dry, oil free air (or nitrogen) to help dissipate heat within the enclosure. Please follow the outlined sections below as a guideline to installing the SPEC-xxx system for your application or in the case of OEM components onto a suitable panel. DO NOT supply power to the unit until specifically told to do so in the Instrument Setup and Initialization procedure given in Section 6. Physical

1. For permanent installations, bolt the photometer, back panel, or enclosure (as appropriate) in place using mounting screws. The location should be secure, rigid, and strong enough to support the weight of the installed system. 2. For laboratory use, the system is supplied with rubber feet. Make sure there is sufficient space on a bench/table top to accommodate the size of the hardware supplied and clearance for both the electrical and fiber optic cables. 3. Run required electrical wiring for instrument power and 4-20mA output

signals. Review Electrical section below prior to making electrical connections.

4. Run required dry and oil free purge air for the unit. (Only necessary with systems mounted in an enclosure that requires cooling). 5. Run the fiber optic cable(s) in conduit or other appropriate protective measure as desired. Refer to Optical section below for information on connecting the optical components.

NOTE: Secure the fiber optic cables so that they are not free to move around, be accidentally stepped on, leaned against, or otherwise damaged during normal operations. The allowed bend radius for fibers supplied is 21cm (8 inches).

6. Install the flow cell in the sensing location, making sure there are no fluid leaks and the accessory has been fully tested under process conditions for temperature and pressure safety.


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Optical

1. Remove the protective boots (typically red) from the SMA 905 connectors on the fiber optic cables supplied for use with the flow cell. 2. Clean the fiber ends using a lint free cotton swab dipped in either spectroscopic grade isopropyl alcohol (IPA, also referred to as 2-propanol) or methanol. Spectroscopic grade acetone can also be used, but may de-laminate the cotton from the swab by dissolving the binding agent. 3. Remove the red protective boots from the SMA 905 connections on the transmitter. 4. For single use carefully thread re-usable optical couplers into flow cell receptacles and hand tighten 5. From optical couplers, remove red protective boots on the two SMA 905 connections (single use cell shown. For other flow cell details see section 2)

6. Connect the optical couplers to the transmitter and light source connection on the photometer via the fiber optic cables.

Fiber optic connection point (detector)

Fiber optic connection point (light source)


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NOTE: Secure the fiber optic cables so that they are not free to move around, be accidentally stepped on, leaned against, or otherwise damaged during normal operations. The allowed bend radius for fibers supplied with the SPEC-xxx system is eight (8) inches. NOTE: NEVER use a wrench, pliers, or other tool to tighten the SMA connections. The connectors are designed to operate after being finger tightened. Over tightening the SMA connections will result in damage to the connector and the fiber optic cable, limiting the light transmission capabilities of the system and typically requiring replacement of the fiber optic cables for normal analyzer operation.

Electrical Bench Top

For Panel mount – see Section 2,2.

Size M Coaxial DC Power Jack = 24DVC

Field wireable connector


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1. DO NOT APPLY POWER to the system. Make sure that this step does NOT power up the unit. It is recommended that an ON/OFF switch be employed. See Section 6 for applying power.

a) For panel mounted system a terminal strip is provided for electrical connectivity to 24 VDC. For the power cord, install 2 – 18 gauge conductors for the 24 VDC, 500 mA power.

b) For laboratory systems, the system is provided a 100-250VAC to 24VDC wall plug-in transformer with interchangeable plug blades for different geographies. 2. Connect the 4-20 mA signal output line.

a) For panel mounted system , a terminal strip is provided for output signal connectivity. Provide connection with a shielded pair of 20 gauge cables. The maximum added loop resistance permissible in the external control system or readout is 400 ohms. b) For laboratory systems, the system ….

3. Ensure that both the 24V Power and the Loop Output are both properly grounded. Improper grounding could result in erroneous measurement results and/or measurement instability. NOTE: DO NOT power up the system at this time. Please reference Section 6 for instructions on powering the unit and initializing the system.

Section 4. Instrument Controls

Zero Set The analyzer has one basic control, the zero set. To utilize this feature, for the panel mount version, there is surface mount button. For the panel mount version, a dry contact relay can be used for remote zero set (see electrical drawing in Appendix 1). This button is used to set the absorbance to 0.000 AU by depressing for approximately 5 seconds and is performed when the sample cell contains the background material or when the probe is in background conditions. Low Reference Indicator (P Version Only) The analyzer has one basic indicator, the low reference indicator. A third TB connector at the end of the unit will create a closed loop if the unit is experiencing low reference energy. This indicator can be connected to an external alarm system. In this case, please contact PendoTECH for assistance.


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Section 5. Using the System The 4-20 mA output is correlated to absorbance intensity in A.U. (absorbance units). To convert absorbance intensity to relevant engineering units the 4-20mA output must be scaled using an external device. The transmitter cannot be set to relevant engineering units, and has a fixed range of 0.000 to 1.999 absorbance units. Please reference Section 4 for details regarding hardware installation (physical mounting, optical connectivity, and electrical connectivity). This procedure assumes that the hardware has been installed correctly and is ready for operation. For a panel mounted system this procedure is valid once electrical connectivity is established. DO NOT power-up the unit until directed to do so in this procedure. Powering the unit incorrectly will result in unstable measurements and errant readings.

1) Connect the flow cell to the transmitter and light source. NOTE: Secure the fiber optic cables so that they are not free to move around, be accidentally stepped on, leaned against, or otherwise damaged during normal operations. The allowed bend radius for fibers is 21cm (8 inches).


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2) Provide power to the unit. 3) Ensure that the sample interface accessory has a zero level of analyte or a stopped

flow condition is present and depress the zero set button for approximately 5 seconds. This will set the absorbance of the zero or background sample to 0.000 AU which corresponds to 4.00 mA.

4) When the process operations are complete, the fiber optics can be removed from the optical couplers and then the optical couplers removed from the flow cell.


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Section 6. Setting and determining the path-length with Adjustable Pathlength Flow Cell

The procedure outlined below is used to set the optical path length for flow cells using couplers

1) Clean the optical surface of the couplers with methanol and a cotton swab to remove any

contaminants.

2) Place the couplers in the flow cell making sure to use the ports with TeflonTM ferrules.

a. Push the left coupler into position. Center the coupler by looking through the

process ports. Tighten the nut to hold the coupler in position

b. Push the right coupler gently into the cell while looking down through the cell.

Make sure that the couplers touch gently. DO NOT tighten the nut on this coupler.

This is the zero optical path position.

3) Measure the distance between the back surfaces of the couplers near the SMA

connections. This is typically done with calipers using metric units (millimeters). This

procedure is shown in Figure 1.

Figure 1. Measuring the zero position coupler to coupler distance

4) Slide out the right coupler, opening a gap between the two couplers. Using the caliper

gently push the two couplers together until the required path length is achieved. Tighten

the nut and measure the distance between the back of the surfaces of the couplers.

5) The difference between steps 3 and 4 is the optical path length


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Section 7. Introduction to Absorbance Monitoring Theory of Operation The ability to monitor the concentration of an analyte in a process stream is critical for accurate and reliable process control. There are many techniques used to determine the analyte concentration of interest. The operation of the SPEC-XXX is based on the spectroscopic theory which states that the absorbance of light by a material (gaseous, liquid, or solid) is proportional to the log ratio of the measured intensity divided by the initial intensity (light intensity in the absence of the analyte of interest). Therefore, the amount of absorption or apparent absorption of light serves as a measure of the analyte concentration in the sample stream. The SPEC-xxx cannot however differentiate between molecular absorbance and apparent absorbance from light scattering. LED Based Absorbance An LED-based photometer is a good choice when qualitative measurements, for example the presence or absence of the analyte of interest, are desired. Additionally, through the use of calibration standards and environmental control, an LED-based photometer is capable of quantitative determination of analyte concentration. It is critical for quantitative measurements, that the LED-based analyzer is accurately correlated to standard laboratory methods and solutions. The SPEC-xxx photometer uses a light emitting diode (LED) to provide a specific wavelength range for measurement tuned to coincide with analyte specific molecular absorbance. In the PendoTECH photometer the LED is located internal to the transmitter and is specific to the application. Therefore, the PendoTECH photometer is a dedicated instrument for monitoring only one specific analyte of interest. In order to monitor a new analyte of interest, the user must return the photometer to PendoTECH for factory reconfiguration to a different wavelength. In brief, the PendoTECH photometer works as follows: The measuring system is in the detector block of the photometric transmitter. Light is provided by an LED, which produces a stable light output at a narrow wavelength range. For the external reference technique, the light passes through a beam splitter where a part of the light is measured by a reference detector and the transmitted light is measured by the measuring detector. The reference channel is used in order to cancel variations from such effects as light source intensity fluctuations or spectral change due to window fouling or suspended particles in the process stream. The remainder of this manual provides the user with the necessary tools to operate the photometer and meet the measurement requirements.


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Section 8. Glossary and Description

Definition of Terms Measure LED: The measure LED is the light emitting diode (LED) used to select the measurement wavelength. Reference LED: The reference LED is the light emitting diode (LED) used to select the reference wavelength to be measured by the reference detector. The center wavelength selected is a wavelength at which the analyte of interest does not absorb and is used to cancel variations from such effects as light source intensity fluctuations or spectral change due to window fouling or suspended particles in the process stream. Reference LED is an optional feature but is required for through media referencing. Measure Detector: The light detector is a UV sensitive photodiode. The light intensity is proportional to the analyte concentration. Sensitivity: The ability of the analyzer to detect a given level of analyte based on the molecular absorbance from the analyte. The actual limits of detection depend on the properties of the analyte measured and the process conditions. Specificity: The ability of the analyzer to monitor one specific analyte in a mixture of background materials without interference from the background materials. Signal-to-noise ratio: Signal refers to the light intensity monitored by the analyzer. Noise refers to the output from the instrument’s electronics, which is present whether or not sample is being read, stray light effects, etc. The signal-to-noise is used as a quality assurance tool to insure that the analyzer system meets design criteria. Dynamic Range: Dynamic range refers to the range of concentrations an instrument can read, from the minimum to the maximum detectable concentration. The minimum detectable concentration is determined by the signal-to-noise ratio. The maximum detectable concentration is determined by the compound’s chemistry and by factors such as instrument sensitivity ranges, optical pathlength, etc. Linearity: Absorbance intensity is typically directly proportional (linear) to concentration. There are, however, many factors that affect this linear relationship. For example, stray light, turbidity, variation in the chemical composition of the background, etc. can affect the linearity of the absorbance response. Process Background: The liquid solution used to transport or sustain the analyte of interest in the process. This solution has all the chemical constituents found in the process except the analyte of interest


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Section 9. Handling of Fiber Optic Cables

For UV/VIS with bend radius of 21cm (8 inches) and standard lengths of 0.5 meter or 1 meter.


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Section 10. Useful Equations

NOTE: The usable range of the 4-20 mA output is 4-20 mA. When setting the background sample absorbance to 0.000 AU, the corresponding 4-20 mA output is set to 4.00 mA.

1: Converting the 4 – 20 mA output to Absorbance Intensity (A.U.) Let x = 4-20 mA output

A.U 999.1*16

4

x

2: Converting the 4 – 20 mA output to Engineering Units Let x = 4-20 mA output Let y = full scale range of the engineering unit

Value ng Engineeri*16

4

y

x


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APPENDIX 1: System Engineering Drawings

Shown is SPEC-XXXP model


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APPENDIX 2: PRODUCT WARRANTY

PENDOTECH LIMITED WARRANTY

LIMITED WARRANTY: Subject to the limitations contained in LIMITATION OF REMEDY AND LIABILITY and except as otherwise expressly provided herein, PendoTECH LLC (“Seller”) warrants that the Software will execute the programming instructions provided by Seller, and that the products, systems and goods (“Goods”) manufactured by Seller will be free from defects in materials or workmanship under normal use and service until the expiration of twenty-four (24) months from the date of shipment by Seller. Expendable items are warranted to be free from defects in material and workmanship under normal use and service for a period of ninety (90) days from the date of shipment by Seller. Products purchased by Seller from a third party for resale to Buyer (“Resale Products”) shall carry only the warranty extended by the original manufacturer. Buyer agrees that Seller has no liability for Resale Products beyond making a reasonable commercial effort to arrange for procurement and shipping of the Resale Products. If, within thirty (30) days after Buyer’s discovery of any warranty defects during the applicable warranty period, Buyer notifies Seller thereof in writing, Seller shall, at its option and as Buyer’s sole and exclusive remedy hereunder, promptly correct any errors that are found by Seller to exist in the Software, or repair or replace F.O.B. point of manufacture, that portion of the Goods or Software found by Seller to be defective. All replacements or repairs necessitated by inadequate preventive maintenance, or by normal wear and usage, or by fault of Buyer, or by unsuitable power sources or by attack or deterioration under unsuitable environmental conditions, or by abuse, accident, alteration, misuse, improper installation, modification, repair, storage or handling, or any other cause not the fault of Seller are not covered by this limited warranty, and shall be at Buyer’s expense. Seller shall not be obligated to pay any costs or charges incurred by Buyer or any other party except as may be agreed upon in writing in advance by an authorized Seller representative. All costs of dismantling, reinstallation and freight and the time and expenses of Seller’s personnel for site travel and diagnosis under this warranty clause shall be borne by Buyer unless accepted in writing by Seller. Failure by Buyer to give such written notice of defects within the applicable time period shall be deemed an absolute and unconditional waiver of Buyer’s claim for such defects. Goods repaired and parts replaced during the warranty period shall be in warranty for the remainder of the original warranty period or ninety (90) days, whichever is longer. All warranties, either express or implied, extend to BUYER only. All descriptions, representations and/or other information concerning Goods on the PendoTECH website and/or contained in PendoTECH’s advertisements, brochures, promotional material, or statements made by employees or sales representatives of PendoTECH are solely for general informational purposes only and are not binding upon PendoTECH. No employee or sales representative of PendoTECH shall have any authority to establish, expand or otherwise modify PendoTECH’s warranty associated with the sale of Goods. SELLER shall not be liable to BUYER in any manner with respect to Goods sold. SELLER MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY TYPE, EXPRESS OR IMPLIED, AND EXPRESSLY DISCLAIMS AND EXCLUDES ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR USE, NON-INFRINGEMENT OR WARRANTY ARISING FROM USAGE OF TRADE, COURSE OF DEALING OR PERFORMANCE. PendoTECH, LLC makes no warranty or representation regarding whether or not a customer’s end use of any PendoTECH product, system or good infringes the valid intellectual property rights of others. LIMITATION OF REMEDY AND LIABILITY: SELLER SHALL NOT BE LIABLE FOR DAMAGES CAUSED BY DELAY IN PERFORMANCE. THE SOLE AND EXCLUSIVE REMEDY FOR BREACH OF WARRANTY HEREUNDER SHALL BE LIMITED TO REPAIR, CORRECTION OR REPLACEMENT UNDER THE LIMITED WARRANTY. IN NO EVENT, REGARDLESS OF THE FORM OF THE CLAIM OR CAUSE OF ACTION (WHETHER BASED IN CONTRACT, INFRINGEMENT, NEGLIGENCE, STRICT LIABILITY, OTHER TORT OR OTHERWISE), SHALL SELLER’S LIABILITY TO BUYER AND/OR ITS CUSTOMERS EXCEED THE PRICE TO BUYER OF THE SPECIFIC GOODS MANUFACTURED BY SELLER GIVING RISE TO THE CLAIM OR CAUSE OF ACTION. BUYER AGREES THAT IN NO EVENT SHALL SELLER’S LIABILITY TO BUYER AND/OR ITS CUSTOMERS EXTEND TO INCLUDE INCIDENTAL, CONSEQUENTIAL OR PUNITIVE DAMAGES. THE TERM “CONSEQUENTIAL DAMAGES” SHALL INCLUDE, BUT NOT BE LIMITED TO, LOSS OF ANTICIPATED PROFITS, LOSS OF USE, LOSS OF REVENUE AND COST OF CAPITAL. Rev. 0


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APPENDIX 3: Service Information Any product which is under warranty must be returned to PendoTECH for repair. If out of warranty, the user should call PendoTECH for over-the-phone assistance and our service staff will help determine if the unit should be returned for repair. For factory service, please contact PendoTECH at [email protected] or call +1-609-799-2299 for a return authorization number. Then pack the unit carefully, preferably in the original shipping container, insure, and ship to PendoTECH.

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PendoTECH Single Use UV/VIS/NIR Flow Cell System Model ...pendotech.com/SPECXXX_L-P_UsersGuide.pdf · PendoTECH Single Use UV/VIS/NIR Flow Cell System Revision 1 User Guide P a g