VWR CO2 Incubator Basic User Manual Download

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CO2 Incubator Basic

VWR

Chapter 14

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Summary of Contents for CO2 Incubator Basic

Page 1: ...VWR CO2 Incubator Basic 50150229 Revision 0 December 2015 ...

Page 2: ...nford Road Radnor Pennsylvania 19087 United States VWR International LLC provides this document to its customers with a product purchase to use in the product operation This document is copyright protected This document is copyright protected and any reproduction of the whole or any part of this document is strictly prohibited except with the written authorization of VWR International LLC The cont...

Page 3: ...uirements 3 14 Transport 3 15 Stacking 3 16 Modifications 3 16 Chapter 4 Description of the device 4 17 Views of device 4 17 Safety devices 4 19 Work space atmosphere 4 19 Sensor system 4 20 Door switch 4 21 Switchbox with supply interface 4 22 Work space components 4 24 90 C decontamination routine optional 4 27 Chapter 5 Start up 5 29 Preparing the work space 5 29 Installing the shelf system 5 2...

Page 4: ... 53 Wipe Spray disinfection 9 53 90 C decontamination routine optional 9 57 Chapter 10 Maintenance 10 61 Inspections and checks 10 61 Service intervals 10 61 Preparing the temperature calibration 10 62 Temperature calibration procedure 10 64 Preparing the CO2 calibration 10 65 CO2 calibration procedure 10 67 Replacing the sterile filters 10 68 Replacing the device fuses 10 69 Replacing the door se...

Page 5: ...cleaning personnel based on these operating instructions applicable safety data sheets plant hygiene guidelines and technical regulations in particular Which decontamination measures are to be applied for the CO2 incubator and accessories Which protective measures are to be applied while specific agents are used Which measures are to be taken in the case of an accident Repairs to the device must b...

Page 6: ...pproved by VWR are used Inspections and maintenance are performed at the specified intervals The warranty is valid from the date of delivery of the device to the operator Explanation of Signs Symbols and signal words used in the operating instructions NOTICE Indicates a situation which if not avoided could result in property damage NOTE Is used for applicational hints and useful information WARNIN...

Page 7: ...damage message Signs on the device Safety signs test marks and marks of conformity placed on the device Electric shock Suffocation hazard Hot surfaces Wear safety gloves Wear safety goggles Harmful liquids Observe operating instructions CSA test mark Test certificate for USA Canada indicates that the product has met the requirements of nationally recognized product safety standards ...

Page 8: ...tervals and must comprise the particular operating instructions of the gas supplier NOTICE Overpressure The operating pressure of the gas applied to the device must not exceed 1 bar If the gas is supplied at a higher pressure the valves integral to the device may not close correctly and the gas supply control may be impaired Set the gas supply to a range between 0 8 bar min and 1 0 bar max and mak...

Page 9: ...or preparing and processing infectious substances so that the device or device components may become contaminated In case of a shut down the device must be decontaminated Before device components are discarded they must be decontaminated The device components must be cleaned thoroughly after the cleaning they must be disinfected or sterilized as required by the application Discarded devices or dev...

Page 10: ...rticles in the work space Alcoholic disinfectants Disinfectants with an alcohol content of more than 10 may form in combination with air easily combustible and explosive gas mixtures When using such disinfectants avoid open flames or exposure to excessive heat during the entire disinfection process Use such disinfectants only in adequately ventilated rooms After the disinfectant has been allowed t...

Page 11: ...entral area of clinics and hospitals The CO2 required for the incubator is supplied to the device from a separate gas supply system either from gas cylinders or from a central pressurized gas container The layout of the gas supply system must ensure that the operating pressure of the gas supply lines can be set to a range between 0 8 bar min to 1 bar max and that the pressure cannot be changed Dep...

Page 12: ...ion category overvoltage category defines the level of transient overvoltage which the instrument is designed to withstand safely It depends on the nature of the electricity supply and is overvoltage protection means For example in Cat II which is the category used for instruments in installations supplied from a supply comparable to public mains such a hospital and research laboratories and most ...

Page 13: ... Components standard equipment Delivery CO2 incubator with single glass door and with continuous shelves standard version Shelf 3 Shelf support post 4 Shelf support rail 6 Insert for pressure compensation opening 1 Plug for pipe channel 1 Power supply cable 1 Connector potential free contact 1 Spare caps set 1 CO2 connecting hose set 1 Immersion water pump 1 Open end wrench 24 mm 1 Allen wrench 2 ...

Page 14: ...R Chapter 2 Acceptance inspection After the device has been delivered check the delivery immediately for Completeness Possible damages If damages are detected or if components are missing please contact the carrier and vendor immediately ...

Page 15: ...temperature of 37 C the ambient temperature must be within a range of 18 C to 33 C Relative humidity up to 80 max Avoid direct exposure to sunlight Devices that produce excessive heat should not be used near the location of the CO2 incubator Room ventilation When CO2 is supplied the work space of the incubator is slightly pressurized The pressure is released through the pressure compensation openi...

Page 16: ...tem with appropriate capacity Space requirements Figure 1 Device dimensions When installing the device make sure that the installation and supply connections are freely accessible The control box at the rear panel of the device may serve as a spacer to adjacent objects The side distances given are minimal distances To protect the CO2 incubator against contamination use a floor stand even if the de...

Page 17: ...sibility for care and maintenance works keep larger side and rear distances Transport Figure 2 Lift point For transport do not lift the device using the doors or components attached to the device e g control box on rear panel as lift points NOTE Lift points Lift the device only using the lift points shown in Figure 2 ...

Page 18: ... onto mobile racks ensure that the rollers 3 are secured by an arresting device during operation For reasons of stability the rollers should be oriented to the front NOTE Transporting stacked devices The stacking elements are not connecting elements Therefore the transport of stacked devices on sloped surfaces is not allowed Modifications NOTE Modifications Retrofits and modifications must only be...

Page 19: ...h interrupts the CO2 supply and the work space heating when the glass door is opened An independent thermal protection protects the samples from harmful overheating in the event of a failure A pressure compensation opening ensures pressure compensation in the device work space Audible and visual alarms indicate failures during operation ...

Page 20: ...sic VWR Chapter 4 Views of device Figure 4 General views of device Front view 1 Stacking elements 2 Plug caps 3 Glass door 4 Measuring cell with blower wheel and sensors 5 Door switch 6 Pressure compensation opening with insert 7 Measuring opening ...

Page 21: ... Stand height adjustable 12 Nameplate 13 Power switch 14 Support rail 15 Shelf 16 Latch glass door 17 Support hook for shelf 18 Access port with plug 19 Glass door seal replaceable Rear view 20 Stacking elements 21 Pressure compensation opening 22 Access port Ø 42 mm 23 Switchbox with supply interfaces 24 CO2 gas container ...

Page 22: ...rk space can hold 4 5 liters of processed water The heating of the work space causes evaporation of the water thereby ensuring a constant humidity within the work space Under normal operating conditions and at the usual incubation temperature of 37 C a constant relative humidity of approx 95 is achieved in the work space If heated containers are removed and put back into the work space the elevate...

Page 23: ...e Their measured values are compared to the set nominal values Based upon this data the control system controls heating and CO2 supply The blower intermixes the supplied gases and ensure uniform temperature distribution within the work space The thermal protection has been preprogrammed at the factory and cannot be changed It protects the stored cultures from overheating If the temperature is exce...

Page 24: ...ch is activated by opening the glass door the gas supply and the heating of the work space are interrupted and the display text will flash If the door remains open for more than 30 seconds a short acoustic alarm sounds If the door remains open for more than 10 minutes the acoustic alarm sounds continuously The outer door can only be closed after the glass door has been latched properly ...

Page 25: ...VWR CO2 Incubator Basic 23 Description of the device Chapter 4 Switchbox with supply interface Figure 7 Supply interfaces ...

Page 26: ... contact terminal legend and notes about the electrical fusing of the device RS 232 interface Via the RS 232 interface 3 the incubator can be connected to the serial interface of a PC This connection allows the computer aided acquisition and documentation of the major operating parameters temperature CO2 concentration failure codes etc Alarm contact The device can be connected to an on site extern...

Page 27: ...VWR CO2 Incubator Basic 25 Description of the device Chapter 4 Work space components Figure 8 Water space layout Water reservoir ...

Page 28: ...e internal chamber floor and inclines toward the rear The embossing in the water tray is used to indicate minimum level 3 and the maximum level 4 Heating system An air jacket heating is used for heating the work space The arrangement of the heating elements ensures that condensate formation above the water reservoir is prevented as fast as possible The outer door of the device is also heated The h...

Page 29: ...erating room NOTE Operating conditions When accessories are to be operated in the work space of the CO2 incubator the ambient condition requirements must be observed see table below The energy introduced into the work space affects the beginning of the temperature control range When additional heating sources are introduced into the work space condensation e g at the glass door may occur Introduce...

Page 30: ...rature of 90 C The effectiveness of the decontamination routine has been tested and certified by independent institutes Information about these tests is available at request from VWR The entire program run of the decontamination routine will take approx 25 hours After the run has been completed the device must be reactivated using the autostart routine NOTE Thermal protection If the thermal protec...

Page 31: ...leaned Support rails Support hooks Shelves Work space surfaces Work space seals Glass door NOTE Decontamination For details about the cleaning and disinfection of the device see Chapter 9 Cleaning and disinfection Installing the shelf system Tools are not required for the installation of the shelf system The support rails are secured using spring pressure After the support hooks have been inserted...

Page 32: ...lation removal Figure 10 Support rail installation removal The support rails are held at the sides by embossing 2 and 5 and secured by the embossing 1 and 6 The support rails marked with are inserted at the rear panel of the device with the locksprings 3 facing upward ...

Page 33: ...nsert installation 1 Insert the shelf supports 3 into the perforations 1 of the support rail with the bar facing down 2 Make sure that the two vertical elements 2 of the shelf support are flush with the support rail Installing the shelves 1 Push the shelf 4 onto the shelf supports with the tilt protection 5 facing the rear panel of the device The tilt protection 5 is also used as a guide for the s...

Page 34: ...e operating pressure of the gas applied to the device must not exceed 1 bar If the gas is supplied at a higher pressure the valves integral to the device may not close correctly and the gas supply control may be impaired Set the gas supply to a range between 0 8 bar min and 1 0 bar max and make sure that this pressure setting cannot be changed NOTE Pressure compensation opening To ensure permanent...

Page 35: ...sure hose and connect hose to the sleeve 4 of the sterile filter 5 4 Secure gas pressure hose to the sleeve of the sterile filter using the hose clamp Power supply connection WARNING Electric shock Contact with current carrying components may cause a lethal electric shock Before connecting the device to the power supply check plug and connection line for damage Do not use damaged components when c...

Page 36: ...ions on the nameplate at the front of the device If the ratings given for voltage V and current A are not correct the device must not be connected to the power supply 2 Connect the connector for non heating appliances 2 to the socket 1 at the control box of the device 3 Connect the grounding plug 3 of the power supply cable to a correctly grounded and fused socket 4 Make sure the power supply cabl...

Page 37: ...ice 3 Connect the remaining other connector 4 to an unassigned slot COM 1 COM 2 etc at the PC 4 Turn PC on Transfer protocol The interface must be configured as follows 9600 baud 8 data bits 1 stop bit no parity Command sequences Data communication is achieved with a defined structure of command sequences frames Frame structure STX command data BCC ETX Command Bit 0 3 data field length in byte Bit...

Page 38: ...tion temperature are shown in the temperature display the codes for CO2 are shown in the CO2 display Value shows that there is no current failure Faulty response from control unit If a returned response is incomplete or faulty the CPU responds with an NAK 15H only 1 byte without frame Otherwise the command code with pertaining length information is regarded as a response and the data that may be r...

Page 39: ...issued to the connected alarm monitoring system The potential free contacts 1 changeover contact have been laid out for the following circuits Alarm relay NOTE Switching structure For all failures reported by the device sensor circuit open deviation from the nominal value and door open for more than 10 minutes the alarm relay changes state Circuit Voltage External fusing Circuits with system volta...

Page 40: ...e of delivery The values for the operating voltage of the external circuits and of the fusing of the alarm system are given in the table above 1 Connect the individual conductors 1 to 4 of the connecting cable as shown in the wiring diagram 2 Connect the connector 5 of the alarm system connecting cable to the interface 6 at the control box at the rear panel of the device ...

Page 41: ...lass door seal must not be damaged The glass door measurement opening must be capped The shelf system components must be installed safely NOTE Hygiene regulations Prior to any operation the user must clean and disinfect the work space in accordance with the hygiene regulations set forth by the operator to protect the cultures Water supply The water tray of the work space can hold up to 3 0 l of pr...

Page 42: ...e control adjusts the temperature to the set nominal value the humidity rises 9 When the temperature and relative humidity are constant automatic adjustment of the CO2 measuring system is performed 10 The auto start indicator goes off 11 The CO2 control supplies the set amount of CO2 12 The device is ready for operation 13 Load work space with cultures NOTE Duration of the auto start routine When ...

Page 43: ...side the door hinges are installed the power switch is integral to the front cover of one of the front device stands 1 Power Switch 2 Front cover To turn the device on Press the power switch 1 the switch illumination comes on To turn the device off Press the power switch the switch illumination goes off ...

Page 44: ...ey for setting temperature nominal value 6 Key for increasing value 7 Key for reading failure codes stopping acoustic alarm 8 Key for activating auto start 9 LED for indicating door open door 10 LED for indicating active auto start 11 LED for indicating active over temperature protection 12 LED for indicating active optional 90 C decontamination routine 13 Key for starting optional decontamination...

Page 45: ...is being run The temperature display shows a three digit number for the corresponding assembly parameter set P 1 Operating and display board P 2 Measuring cell P 3 Main board P n Parameter number The CO2 display shows the software version device version 2 Test routine completed The temperature display shows the current temperature value the CO2 display shows the current CO2 value NOTE Factory pre ...

Page 46: ...alue Press the keys 3 Accept and store the nominal value Release both keys The temperature display shows the current actual value measured in the work space Setting the CO2 nominal value 1 Indicate the nominal value Press the key The CO2 display shows the current nominal value 2 Enter the nominal value The nominal value can be increased or reduced in increments if you keep the key depressed the UP...

Page 47: ...n of cleaning and maintenance works Running the routine usually takes 5 to 7 hours At low room temperatures and when the device is cold it may take up to 10 hours until the auto start routine has been completed If the glass door is opened or if the power supply of the device is interrupted while the routine is running the routine is interrupted and rerun after the glass door has been closed and af...

Page 48: ...ic codes Failure recognition is displayed by an acoustic and a visual alarm at the operating panel The diagnostic system stores the last 10 failures in the sequence of their occurrence The failure table can be requested and read If the cause of a failure cannot be repaired please have the fault code and the serial number of the device available when contacting Technical Service NOTE Response delay...

Page 49: ...dible alarm is silenced 3 Read codes Keep the key depressed If no failure is detected each display shows three hyphens If the system detects a failure the display that is assigned to the corresponding control circuit shows a failure code Example If the temperature display shows failure code 101 a failure in the temperature control circuit was detected NOTE Failure codes For a list and a descriptio...

Page 50: ...he CO2 display shows the number of the individual failure code within the table 5 Exit the failure code table Release the key The temperature and CO2 displays show the current actual values 6 Erase the failure code table Keep the depressed for 5 seconds The temperature and CO2 displays flash to indicate that the failure table has been erased ...

Page 51: ...eeded Repeat auto start 99 Device doors open Doors open for more than 10 minutes door switch Close device doors test door switch for correct function 100 Temperature below nominal value Actual value nominal value 1 C Contact Service 101 Temperature above nominal value Actual value nominal value 1 C Do not exceed ambient temperature limit 104 Temperature sensor faulty Sensor circuit open shorted Co...

Page 52: ...switch NOTICE Thermal protection When the cause of the failure e g excessive temperature in the operating room has been repaired the device is set to normal incubation operation after it has been turned on again If the cause of the failure cannot be repaired with simple measures e g by ventilating the room or by reducing the temperature in the operating room the thermal protection will respond aga...

Page 53: ...om the work space 2 Pump water out off the water reservoir 3 Clean and decontaminate the work space and wipe device dry Turn device off using the power switch 4 Unplug power connector and protect it against accidental reconnection 5 Close the CO2 supply system shut off valves 6 Disconnect gas pressure hoses from sleeve at the rear of the device 7 Until the device is shut down the work space must b...

Page 54: ... Shut down 52 CO2 Incubator Basic VWR Chapter 8 ...

Page 55: ...CE Incompatible cleaning agents Some device components are made of plastic Solvents may dissolve plastics Powerful acids or bases may cause embrittlement of the plastics For cleaning the plastic components and surfaces do not use hydrocarbon containing solvents detergents with an alcohol content of more than 10 or powerful acids and bases Chloride containing disinfectants Chloride containing disin...

Page 56: ...o 50051939 NOTE Description disinfectant Details for efficiency and approvals are available on request Preparing the manual wipe spray disinfection WARNING Electric shock Contact with current carrying components may cause a lethal electric shock Prior to cleaning and disinfection work disconnect the device from the power supply Turn the device off using the power switch Unplug power connector and ...

Page 57: ...e remaining water off from the floor plate of the water reservoir using a cloth Predisinfection 1 Remove all samples from the work space and store them in a safe place 2 Spray disinfectant onto the surfaces of the work space and of the accessories or wipe the surfaces clean using disinfectant 3 Allow disinfectant to react as specified by the manufacturer NOTE CO2 sensor Do not spray disinfectant o...

Page 58: ...ttached to the axle and if it can rotate freely then secure cover using the screws Cleaning the work space and accessories 1 Thoroughly remove dirt residues and deposits using a solution of tepid water and dishwashing agent 2 Wipe surfaces clean using a clean cloth and plenty of clean water 3 Remove cleaning liquid from water tray and wipe all surfaces of the work space thoroughly dry 4 Wipe acces...

Page 59: ... power switch 4 Activate decontamination routine 5 After the decontamination routine has been completed remove the remaining water using a sterile cloth 6 Turn the device off or restart the device operation using auto start routine NOTE Duration of the auto start routine When the device is cold and when the ambient temperature is low the auto start routine may take up to 10 hours 90 C decontaminat...

Page 60: ...x 14 hours The device cools down until the originally set temperature nominal value is reached Postheating phase Remaining run time approx 3 hours During the postheating phase condensate within the device is eliminated as far as possible remaining condensate accumulates at the bottom of the work space Activating the 90 C decontamination routine Before running the decontamination routine fill the w...

Page 61: ...ng the 90 C decontamination routine 1 Cancel a routine phase Keep the key depressed for 5 seconds The routine advances to the next phase 2 Cancel the routine completely To completely cancel the routine each phase must be skipped individually by pressing the key until a remaining run time of 0 hours is displayed When the last phase postheating phase has been skipped the routine is completely cancel...

Page 62: ... Cleaning and disinfection 60 CO2 Incubator Basic VWR Chapter 9 ...

Page 63: ...nal check of the operating panel and of the device control Electrical safety check in accordance with the relevant national regulations e g VBG 4 NOTE Functional check If safety devices were removed or disabled for inspections the device must not be operated before the safety devices have been reinstalled and checked for their correct function Service intervals During normal operation the followin...

Page 64: ... calibration is required During this process the temperature control of the device is set to the value measured during the temperature comparison measurement Use a calibrated measuring instrument with an accuracy of 0 1 C for this test To minimize temporary temperature fluctuations during the measurement the measuring instrument is placed into the work space in an isothermal container e g a bowl f...

Page 65: ...ng instrument 3 onto the A center area of the work space Alternatively a temperature sensor may be positioned in this location Route the connecting cable either through the measurement opening 2 in the glass door or through the access port 1 at the rear panel of the device 4 Close doors 5 Wait until the temperature value displayed on the measuring instrument has stabilized 6 Calibrate temperature ...

Page 66: ...Temperature calibration procedure 1 Activate calibration Keep the key depressed for 5 seconds All operating panel indicators flash 2 Indicate the nominal value Press the key The preset value of 37 C is displayed 3 Enter the measured value destination value Press the keys or Press the keys Destination value e g 36 4 C 4 Accept the destination value Press the key The temperature display momentarily ...

Page 67: ...ng this check a CO2 calibration is required During this process the CO2 control of the device is set to the value measured during the comparison measurement Use a calibrated measuring instrument with an accuracy of 0 3 CO2 for this test Suitable instrument Portable IR readout instrument Part no see Chapter 11 Parts and accessories The measuring sample is withdrawn through the seal able measurement...

Page 68: ...s may take several hours 3 Route the measuring instrument either through the measurement opening 2 in the glass door or through the access port 1 at the rear panel of the device Wait until the CO2 value displayed by the instrument has stabilized 4 Remove measuring probe plug measurement opening and close doors 5 Calibrate CO2 control as described in Section CO2 calibration procedure Measurement ex...

Page 69: ...rating panel indicators flash 2 Indicate the nominal value Press the key The set nominal value of 5 is displayed 3 Enter the measured value destination value Press the keys or Press the keys Destination value e g 5 6 4 Accept the destination value Press the key The CO2 display momentarily shows CAL then the corrected actual value measured destination value 5 6 is displayed 5 Cancel the calibration...

Page 70: ...e that the gas supply is shut off 2 Loosen hose clamp 4 3 Remove gas hose 5 from sterile filter sleeve 2 4 Remove retainer 1 5 Unscrew the particle filter 2 from the threaded hole 3 6 When installing the new particle filter make sure that the plastic thread is not canted Screw filter in carefully all the way to the stop 7 Install retainer 1 8 Connect gas hose to particle filter sleeve and secure i...

Page 71: ...power plug receptacle of the device Time delay fuses 6 3 A 5x20 mm 1 The fuse holder is secured to the fuse compartment 1 using two locking tabs 2 2 To remove the fuse holder squeeze the two locking tabs and pull holder 3 out of fuse compartment 3 Remove faulty fuse from holder and install new fuse 4 Slide fuse holder into fuse compartment and press holder on until locking tabs are fully engaged ...

Page 72: ...the outer door is located in the retaining slot No tools are required to replace the seal 1 Pull magnetic seal 3 out of the guide slot 1 2 Position new seal at a corner 2 and press seal retaining rail 4 into slot 3 Make sure that the retaining rail taper is positioned correctly in the slot 1 and that the seal is flush with the door frame ...

Page 73: ...Support for parts and accessories please have the following information available Model Number Serial Number Date Purchased NOTE Repairs Use only original parts that have been tested and approved by VWR The use of other parts presents potential hazards and will make the warranty void Additional parts For additional parts please contact VWR Service Organization ...

Page 74: ... Parts and accessories 72 CO2 Incubator Basic VWR Chapter 11 ...

Page 75: ...ntity Piece 10 Maximum surface load Piece 10 insertion shelf Maximum device overall load kg ib 30 66 1 Weight without accessories kg ib 70 stainless steel 154 3 stainless steel THERMAL Ambient temperature range C 18 33 Temperature control range C RT 3 55 Temperature deviation at 37 C time C 0 1 Temperature deviation spatial DIN 12880 Part 2 at 37 C C 0 6 Duration of the auto start routine to 37 C ...

Page 76: ...l 0 20 Control deviation temporal vol 0 1 Recovery time at 5 door open 30 seconds to 98 of initial value min 8 CO2 MEASURING CELL Accuracy absolute CO2 0 3 ELECTRICAL SYSTEM Rated voltage V 1 N PE 120 V AC Rated frequency Hz 50 60 Interference suppression DIN VDE 0875 Interference level N Type of protection DIN 40 050 IP 20 Protection class l Overvoltage category IEC 1010 EN 61010 ll Pollution sev...

Page 77: ...VWR CO2 Incubator Basic 75 Technical data Chapter 12 Average gas consumption Figure 24 CO2 consumption ...

Page 78: ... Technical data 76 CO2 Incubator Basic VWR Chapter 12 ...

Page 79: ...roperly after they have been decontaminated properly NOTE Recycling service VWR offer for a small fee an environmentally compatible recycling service for discarded devices List of used materials Component Material Thermal insulation components Polystyrene foam EPS PPS Compound Printed circuit boards Enclosed electrical components coated with different plastics equipped on epoxy resin bound boards ...

Page 80: ...tion opening insert POM with brass sinter filter Glass screen Soda silicate glass Glass door seal measurement opening Tempered silicone Sensor block Stainless steel 1 4301 Blower wheel Stainless steel 1 4305 Measuring cell baseplate seal Tempered silicone Cables Plastic sheathed copper flexible Packaging Corrugated board polyethylene film and styrofoam Component Material ...

Page 81: ...VWR CO2 Incubator Basic 79 Device log Record following information here Nameplate information Work carried out Maintenance work Repairs ...

Page 82: ... Device log 80 CO2 Incubator Basic VWR Chapter 14 Device type Part number Serial number Service number Location Operator s note Work carried out Notes Date Signature ...

Page 83: ...VWR CO2 Incubator Basic 81 Certificate of decontamination ...

Page 84: ... Certificate of decontamination 82 CO2 Incubator Basic VWR Chapter 15 ...

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