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Jasco CD-1595, Руководство по эксплуатации

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1-1 

1. GENERAL DESCRIPTION AND SPECIFICATIONS OF 

INSTRUMENT 

1.1 General 

Description 

 

JASCO has developed the model CD-1595 chiral detector dedicated to HPLC.   
It is an innovative detector that offers higher sensitivity for chiral compounds 
with more information than a conventional optical rotation (OR) detector.  
 
Chiral separation is now one of the most important application areas in HPLC. 
There is increasing demand for chiral chromatography in various fields, such 
as drug analysis, drug discovery, biochemical analysis, natural product 
analysis, organic synthesis, etc.  Recent advances in chiral column 
technology are boosting the use of chiral chromatography in more and more 
laboratories.   Advances in chiral detection technology, however, have not yet 
met these demands in terms of sensitivity and selectivity.  The new CD-1595 
detector is expected to meet the requirements. 
 
OR detectors have exclusively been used for detection of chiral compounds, 
though it is known that a detector based on circular dichroism may offer better 
sensitivity.  Therefore, a lot of efforts have been made to utilize a regular CD 
spectropolarimeter, which is rather big and expensive, as an HPLC detector.  
After extensive R&D work, JASCO has successfully developed a compact CD 
detector dedicated to HPLC that offers simultaneous detection of CD and UV 
absorption, and even CD and UV spectral measurements by stop-flow 
scanning.  
 
Most biologically active compounds are chiral.  It is well known that chiral 
isomers often cause totally different biological effects, e.g., one offers 
therapeutic effect but the other has unwanted one such as teratogenic activity.  
Most naturally occurring medicines contain only one type of the isomers.  
However, when such a compound is artificially synthesized, both isomers are, 
in general, equally produced.  Therefore, each isomer must be examined for 
its biological activity.  In such investigation, a conventional CD 
spectropolarimeter has been effectively used. In order to analyze samples 
with the CD spectropolarimeter, chiral separation needs to be performed and 
each isomer must be fractionated.  The new CD-1595 detector offers on-line 
monitoring of CD signals during chiral separation and gives indication which 
peak components should be collected. In addition, the simultaneous CD and 
UV monitoring by the detector allows to determine optical purity of unresolved 
peaks of chiral compounds.  This facilitates researchers to speed up their 
investigation on new drug discovery. 

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Содержание CD-1595

Страница 1: ...xcess underutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing Rentals Demos In stock Ready to ship TAR certified secure asset solutions Expert team I Trust guarantee I 100 satisfaction All trademarks brand names and brands appearing herein are the property of their respec...

Страница 2: ...0302 0402B JASCO MODEL CD 1595 CIRCULAR DICHROISM CHIRAL DETECTOR OPERATION MANUAL Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 3: ...oided could result in death or serious injury CAUTION A CAUTION indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury It may also be used to alert against unsafe practices Do not proceed beyond a WARNING or CAUTION notice until you understand the hazardous conditions and have taken the appropriate steps Note A Note provides additional information t...

Страница 4: ...tage of 200 V or greater is generated during the operation of the detector Inserting one s hands or other objects into this area may result in electric shock Be sure to turn off the power and unplug the power cord before performing maintenance in this area WARNING Replace the lamp after the lamp bulb is cooled Replace the lamp after the lamp bulb is cooled Replace the lamp after the lamp bulb is c...

Страница 5: ...UND 3 Xenon Lamp Warning Label P N 0822 0077A When replacing the Xenon lamp refer to the operations manual P N 0301 0193A and follow the instructions carefully 4 Fuse Warning Label P N 0822 0120A 5 Electric Shock Warning Label P N 0822 0124A Electric shock may occur if the instrument is not properly grounded WARNING ONLY WITH FUSE OF THE SPECIFIED AGAINST RISK OF FIRE REPLACE FOR CONTINUED PROTECT...

Страница 6: ...ng the instrument cover removing the instrument cover removing the instrument cover removing the instrument cover CAUTION Before turning on the lamp Before turning on the lamp Before turning on the lamp Before turning on the lamp confirm VOLTAGE SELECT is confirm VOLTAGE SELECT is confirm VOLTAGE SELECT is confirm VOLTAGE SELECT is set to 115V or 230V when set to 115V or 230V when set to 115V or 2...

Страница 7: ...eighs approximately 21 kg When carrying the instrument be sure to hold the instrument as shown in Fig 3 Figure 3 Grip Locations for Carrying the Instrument Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 8: ...hat the contents are fully understood This manual should be easily accessible to the operator at all times during instrument operation When not using the instrument keep this manual stored in a safe place Should this instruction manual be lost order a replacement from your local JASCO distributor The manuals for this instrument consist of an operations manual and a maintenance manual This is the o...

Страница 9: ...pheric pressure of 750 1060 hPa 6 Avoid strong magnetic fields and sources of high frequency waves The instrument may not function properly when near strong magnetic fields or high frequency wave sources 7 Avoid vibrations caused by vacuum pumps electric motors processing equipment and machine tools 8 Avoid dust and corrosive gas Do not install the instrument in a location where it may be exposed ...

Страница 10: ...er or authorization of the use of Jasco software to or by a third party is prohibited y Disclosure of confidential information related to Jasco software is prohibited y Changes or revisions to Jasco software are prohibited y Use of Jasco software on multiple workstations or terminals through a network or through any other means is strictly prohibited This does not apply to entities with the networ...

Страница 11: ...THER THAN AUTHORIZED JASCO PERSONNEL 4 USE OF PARTS OTHER THAN THOSE THAT ARE AUTHORIZED BY JASCO 5 INORDINATELY RAPID DETERIORATION DUE TO THE USE OF CORROSIVE SOLVENTS OR SAMPLES 6 NATURAL DISASTERS SUCH AS FIRES WATER DAMAGE OR EARTHQUAKES In addition this warranty does not cover CONSUMABLE PARTS OR PARTS THAT HAVE A SEPARATE WARRANTY OR A WARRANTY PERIOD THAT IS DIFFERENT THAN THAT SPECIFIED A...

Страница 12: ...x Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 13: ...2 2 2 3 Flowcell Assembly 2 4 2 4 Rear Panel 2 5 3 Power On Self Diagnostic Test and Power Off 3 1 3 1 Power on and Self Diagnostics 3 1 3 2 Turning power off 3 2 4 PREPARATION FOR MEASUREMENT AND BASIC OPERATION 4 1 4 1 Preparation for Measurement 4 1 4 2 Setting Parameters 4 3 4 2 1 Changing WAVELENGTH 4 4 4 2 2 Changing GAIN 4 5 4 2 3 Changing RANGE 4 6 4 2 4 Changing RESPONSE 4 7 4 3 Measureme...

Страница 14: ...Selecting Autozero Mode 5 8 5 11 SHIFT 9 5 9 5 12 SHIFT MARK 5 Setting Flowcell Path length 5 9 6 Operations in Program Mode 6 1 6 1 Description 6 1 6 2 File Number Setting File Loading 6 1 6 3 Switching Between Normal Operation Mode and Program Mode 6 2 6 4 Editing Programs 6 3 6 4 1 Editing initial parameters 6 3 6 4 2 Editing the time program 6 4 6 4 3 Program example 6 7 6 5 Time Program Opera...

Страница 15: ...r extensive R D work JASCO has successfully developed a compact CD detector dedicated to HPLC that offers simultaneous detection of CD and UV absorption and even CD and UV spectral measurements by stop flow scanning Most biologically active compounds are chiral It is well known that chiral isomers often cause totally different biological effects e g one offers therapeutic effect but the other has ...

Страница 16: ... cell path length 25 mm 1 5 10 mm optional Signal outputs Simultaneous outputs of CD circular dichroism and UV absorption CD UV recorder output 10mV full scale CD integrator output 1V deg UV integrator output 1V AU and 1V 2AU Spectral measurement Simultaneous measurement of CD and UV spectra Spectral memory 220 420 nm both UV and CD Memory 10files Power requirement 100 240 VAC 400VA Dimeniton 390 ...

Страница 17: ...ette type flowcell assembly Display operating conditions CD UV and other signal levels parameters and various messages Parameters necessary for the operation can be entered through the keypad Used to turn the instrument on or off Used to adjust optical zero of the CD signal 1 2 3 4 0 9 8 3 2 1 7 6 5 4 MODE W L nm GAIN CD AU RESPONCE AUTO ZERO PRGM RUN MARK MONIT CLEAR SHIFT SCAN PRGM EDIT ENTER Ar...

Страница 18: ...e lamp on the key lights It is also used for measuring outputting CD UV spectra Outputs marker on the recorder output Used to return to or change the monitor mode Used in combination with the numeric keys to set or display parameters that are less frequently changed Changes to the scan monde 0 9 8 3 2 1 7 6 5 4 MODE W L nm GAIN CD AU RESPONCE AUTO ZERO PRGM RUN MARK MONIT EDIT ENTER CLEAR SHIFT SC...

Страница 19: ...nt keys Clear erroneous entry of parameters It also clears error messages Used to edit enter parameters NOTE Perform optical zero adjustment by turning the CD ZERO knob before activating the Autozero Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 20: ...anel is fixed to the cell body Used to secure the flowcell assembly in position to the detector NOTE To attach the flowcell assembly to the detector press the cell panel until the cell body reaches to the bottom then alternately tighten the lock screws to secure the flowcell assembly 2 3 1 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 21: ... 1 AU The output can be changeable to 1V 2AU by key operation CD signal output for recorder UV signal output for recorder This output can be switched to g factor output CD AU by the key operation SHIFT 4 See Section 5 6 Terminal Block 2 Terminal Description MARK IN A Z IN Marker input Shorting and terminals generates a tick mark on the recorder output Autozero input Shorting and terminals activate...

Страница 22: ...internally closed Parts 3 Part Description Cooling fan Fan for cooling the lamp house etc Power inlet Power inlet connection Fuses Fuses for power line Warning For continued protection against risk of fire replace only with fuse of the specified type and current ratings Labels 4 Label Description Serial No Fuse Line voltage Serial number and other important informations are printed Fuse warning la...

Страница 23: ...will appear and the self diagnostics will be terminated However when the light source emission is checked to be poor the error message EMISSION POOR will be shown for several seconds then resume the diagnostics On completion of the self diagnostics the following display will appear as shown in Figure 3 1 Figure 3 1 Normal mode display NORM 291 X10 0 002 0 003 STD MODE W L GAIN CD AU RESPONSE CD Si...

Страница 24: ...o turn off the power just turn the POWER switch off Parameters set during the operation such as wavelength sensitivity range and response are stored on the C MOS RAM and these values will be automatically resumed when the instrument power is turn on again Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 25: ...ata processing system to the instrument referring to Chapter 2 Names and Functions of Parts Figure 4 1 Connection of input output terminals on the rear panel and the other instruments 2 Connect column outlet tubing to the inlet port of the CD 1595 flow cell Use 1 16 in OD x 0 25 mm I D tube and 1 16 in fittings AU 1V AU CD 1V deg CD 10mVF S AU 10mVF S To Chart recorder Input terminals 10mV To Inte...

Страница 26: ...o avoid excessive pressure that may cause leakage of the flow cell 4 Start the HPLC pump to flow mobile phase solvent and wait for the baseline to be stabilized CAUTION The flow cell has been purged with isopropanol before shipping from factory If a buffer solution containing salt is to be used be sure to flush the flow cell with water before flowing the solution Artisan Technology Group Quality I...

Страница 27: ...table values to the sample to be measured This section describes how to set WAVELENGTH GAIN RANGE and RESPONSE Operation mode Wavelength Gain Normal 291nm x1 x10 MODE W L GAIN NORM 291 X10 0 002 0 003 STD CD AU RESPONSE CD Signal Absorbance Response time Degree AU FAST STD SLOW Figure 4 2 Monitor Screen Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 28: ...canning at chromatographic peaks Wavelength range 220 420nm Monitor Screen Changing Wavelength Screen Changing Wavelength to 230nm NORM 291 X10 0 000 0 000 STD Setting Wavelength Screen NORM 291 X10 0 000 0 000 STD NORM 230 X10 0 000 0 000 STD Blinking EDIT ENTER EDIT ENTER Input 2 3 0 Figure 4 3 Setting WAVELENGTH Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artis...

Страница 29: ...splayed see Fig 5 2 the setting X1 should be used to reduce the CD signal to a proper level GAIN X1 or X10 EDIT ENTER Normal Operation Mode Display Select x10 or x1 Blinking NORM 291 X10 0 000 0 000 STD NORM 291 X10 0 000 0 000 STD EDIT ENTER Setting GAIN EDIT ENTER EDIT ENTER NORM 291 X1 0 000 0 000 STD Figure 4 4 Changing GAIN Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SO...

Страница 30: ... 291 X10 0 000 0 000 STD SHIFT 3 CD RANGE input screen Blinking EDIT ENTER CD RANGE 0 0001 AU RANGE 0 0001 UV RANGE input screen CD RANGE 0 0001 AU RANGE 0 0001 EDIT ENTER MONIT RANGE input screen EDIT ENTER Figure 4 5 Changing RANGE Note The value RANGE can be changed also with numeric kyes Note AU output can be changeable to g factor output by the key operations See 5 6 Selecting Recorder Output...

Страница 31: ...rd and SLW slow Normally it should be set to STD EDIT ENTER Normal Operation Mode Display Select FST STD or SLW NORM 291 X10 0 000 0 000 STD EDIT ENTER NORM 291 X10 0 000 0 000 SLW EDIT ENTER Blinking NORM 291 X10 0 000 0 000 STD Figure 4 6 Changing RESPONSE Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 32: ...oltage Figure 4 7 Preamplifier Output 2 Turn OPT CD ZERO knob see Fig 2 1 to adjust the CD signal voltage to become within 0 0 03V After the adjustment finished press MONITOR to return to the normal mode screen 3 After confirming the baseline is stable press AUTOZERO key then recorder and integrator outputs will be set to zero 4 Inject the sample and immediately push MARK to output the marker sign...

Страница 33: ...lamp turned off as the lamp off time elapsed WARNING CHECK LAMP TIMER The cumulative lamp operation time has exceeded 1000 hours TROUBLE OVER TEMP Lamp house temperature is unusually high TROUBLE DARK ERROR Dark signal is out of normal range When the setting time of the lamp off timer has elapsed the LAMP OFF TIMER LAMP OFF message will appear and the lamp will turn off This is not an error To re ...

Страница 34: ... screen Most integrators can accept an input voltage between 10mv and 1v This function allows to shift up the voltage on the integrator output terminal thus preventing the output from going below the 10mv limit even for negative peak SHIFT 6 Cumulative Lamp Operation Time display screen Use this function to determine when the lamp needs to be replaced SHIFT 7 Recorder Polarity setting screen Chang...

Страница 35: ...al shown in Figure 5 2 reads within 0 003V while flowing only mobile phase solvent This function also provides means to read the preamplifier output signal level that directly shows the UV energy reached the photodiode Direct reading of preamplifier outputs reflects the conditions of the lamp and other optical elements as well as presence of air bubbles in the flowcell CD Sig 0 000 V UV Sig 0 000 ...

Страница 36: ...n when the Lamp Off Timer turns off the lamp To set the LAMP OFF TIMER to OFF enter 0 0 5 4 2 Turning Lamp On after Lamp Off Timer activated To turn the lamp on again after Lamp Off Timer activated turn off the power and then turn on again Note that while the lamp is hot the lamp may fail to get lit wait at least 1 minute after the lamp is turned off until it cools down then turn the lamp on again...

Страница 37: ... function If G FACTOR OUT mode has been selected a signal CD UV g factor can be outputted from the UV output terminal for recorder on the reae panel see Fig 4 1 in place of UV absorbance output SHIFT 4 Monitor screen NORM 291 X10 0 0000 0 0000 STD MONITOR AU REC OUT EDIT ENTER MONITOR G FACTOR REC OUT 0 001 AU EDIT ENTER or AU REC OUT G FACTOR REC OUT G FACTOR REC OUT 0 001 AU EDIT ENTER EDIT ENTE...

Страница 38: ...age on the integrator output terminal thus preventing the output from going below the 10mv limit even for negative peak or negative drift NOTE This function has no effect on the recorder output Integrator output Integrator out of range 0 V 10 mV 0 V 10 mV Integrator output Zero shift 0 mV Zero shift 10mV Figure 5 7 Negative drift vs integrator dynamic range Artisan Technology Group Quality Instrum...

Страница 39: ...rator output zero level 0 5 10 30 50 100 500 1000mV can be selectable as the integrator output zero level A Z POSITION INT OUT 50 mV A Z POSITION 50mV Blinking SHIFT 5 Monitor screen Setting integrator output zero level EDIT ENTER EDIT ENTER NORM 291 x10 0 0000 0 000 STD MONITOR Figure 5 9 Setting integrator output zero level Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURC...

Страница 40: ...ked to estimate when the lamp should be replaced LAMP OPERAT TIME 120 5 H SHIFT 6 Monitor screen Lamp operation time screen NORM 291 X10 0 0000 0 000 STD MONITOR Figure 5 10 Checking cumulative lamp operation time Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 41: ...h settingis changed either in a time program or manually When performing repeated analysis using the autosampler autozero is automatically executed with the addition of a marker on the recorder output when thr MARKER IN signal is input MANUAL Autozero is not executed when a wavelength is changed or MARKER IN signal is input HOLD The baseline position will not changed when a wavelength is changed o...

Страница 42: ... with using the cell of 10 mm path length By setting 25 mm path length with using standard flowcell 25mm cell path length the output value is corrected to that with 10 mm cell that means the CD signal has been corrected to 1 2 5 and outputted as a CD output signal In case that path length is set to 10 mm CD signal with no correction is outputted Blinkig SHIFT MARK Monitor screen EDIT ENTER NORM 29...

Страница 43: ...mode is provided in the flow chart below Set file number See Section 6 2 Switch to program mode See Section 6 3 Edit initial parameters See Section 6 4 1 Edit time program See Section 6 4 2 Execute See Section 6 5 6 2 File Number Setting File Loading Up to 10 files 0 9 can be used Follow the procedure described below to set the file number 1 Changing file numbers Input range 0 9 FILE NO n FILE NO ...

Страница 44: ...en is displayed The program mode monitor screen will appear Fig 6 2 Press the key again to return to the previous screen PRG5 T 0 0 W L 250 RSPN STD MONIT PRGM NORM 250 X10 0 0000 0 000 STD Monitor screen PRG 5 250 X10 0 0000 0 000 STD Program mode monitor screen Figure 6 2 Switching Between Normal Operation Mode and Program Mode The program mode monitor screen consists of a time and wavelength sc...

Страница 45: ... this screen using the procedure described in Fig 6 4 PRG5 INITIAL W L 300 RSPN STD PRG5 INITIAL W L 250 RSPN STD PRG5 INITIAL W L 250 RSPN STD MONIT Step 0 EDIT ENTER 3 0 0 EDIT ENTER PRG 5 T 0 0 W L 250 RSPN STD MONIT PRG 5 250 X10 0 0000 0 000 STD Wavelength Response Blinking Response input screen Program mode monitor screen Input 300nm Select FAST STD or SLOW EDIT ENTER Blinking Wavelength inp...

Страница 46: ...T 2 T 2 0 1 WAVE LENGTH PRG5 ST 1 T 1 0 W L 250 nm PRG5 ST 1 T 1 0 1 WAVE LENGTH PRG5 ST 1 T 0 0 PRG5 ST 1 T 0 0 EDIT ENTER 1 EDIT ENTER EDIT ENTER Input 1 minutes Input 270nm Conpletion of step 1 PRG5 ST２ T 0 0 EDIT ENTER 2 EDIT ENTER or 4 EDIT ENTER Step 1 screen Step 2 screen Initial parameters display screen Wavelength input screen Step 0 PRG5 INITIAL W L 270 RSPN STD 2 7 0 EDIT ENTER PRG5 ST ...

Страница 47: ...ct a function by using numeric key or Input the function by pressing EDIT ENTER The function will appear and the value will blink awaiting input 5 Input the desired value by using numeric key or and press EDIT ENTER to enter the value 6 Press to move to the next program step Repeat this procedure until all steps are entered After the final step completed press MONIT to go to the program mode monit...

Страница 48: ...PRG ST 3 T 1 0 W L 250 nm Awaiting input Change the value Time blinks Value blinks EDIT ENTER EDIT ENTER PRG ST 3 T 1 0 W L 250 nm Figure 6 6 Correcting time program 6 4 2 3 Deleting individual steps or several steps from a time program Deleting individual steps 1 Press the key to advance to the step to be deleted 2 Set the time in the step to 0 EDIT ENTER 0 EDIT ENTER 3 Press the MONIT key to ret...

Страница 49: ...ided in Section 6 4 2 1 4 Press the MONIT key to return to the monitor screen Steps will be rearranged in time sequence 6 4 3 Program example Figure 6 7 shows an example of analysis performed while changing wavelengths attenuation and autozero Detection conditions for the 5 peaks are shown in Table 6 2 10 20 30 40 50 1 2 3 4 5 ABS Time min Wavelength 300nm 270nm 250nm Attenuation 0 04 1 28 0 001 A...

Страница 50: ... Note INITIAL 300 0 04 1 8 0 270 0 04 2 20 0 250 0 04 3 27 0 250 1 28 4 41 0 250 0 001 5 44 0 250 0 001 Immediately following autozeroing The time program for the above example is shown in Fig 6 7 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 51: ... screen PRG ST 2 T 20 0 W L 250 nm PRG ST 3 T 27 0 AU RANGE 1 28 PRG ST 5 T 41 0 AU RANGE 0 001 PRG ST 6 T 44 0 AUTO ZERO Initial parameter screen Wavelength 300 nm Range 0 04 Range changed to 1 28 after 27 0 minutes Wavelength changed to 250 nm after 20 0 minutes Range changed to 0 001 after 41 0 minutes Figure 6 8 Example Time Program Artisan Technology Group Quality Instrumentation Guaranteed 8...

Страница 52: ...vity wavelength response speed and lamp off timer can be changed while a program is running These changes can be made from the display screens designated by boxes drawn with double lines in Fig 6 9 The pre amplified output can also be displayed The settings changes are valid until the program progresses and the next group of settings are activated MONIT LAMP OFF TIMER 2 0 H CD SIG 0 0000 V UV SIG ...

Страница 53: ...ction This is done by measuring the background first when no sample is being eluted i e the baseline spectrum then the spectrum of the sample is measured Finally the detector will output the true spectrum 7 1 1 Principles of Operation The following operations are performed in the SPECTRUM mode 1 The baseline spectra CD and UV are acquired then stored into memory 10 2 Spectra of sample compounds ar...

Страница 54: ...nd Corresponding Displays in SPECTRUM mode NOTE 1 Pressing MONIT while in any one of the SPECTRUM mode displays will restore either the NORMAL OPERATION or TIME PROGRAM MONITOR display NOTE 2 Output of spectra obtained in a time program is carried out in SPECTRUM mode In addition the baseline spectrum is measured in the SPECTRUM mode even if spectrum measurement of a sample is carried out in a tim...

Страница 55: ...e wavelength range is 220 420nm SPECTRUM MEASURE BASE 0 MEAS 1 1 Blinking 0 EDIT ENTER Spectrum mode initial screen Select baseline spectrum measure mode BASELINE MEASURE PUSH PROG RUN PRGM RUN Measureing baseline spectrum MEAS XXX BASE Y YYY Z ZZZ Figure 7 2 Procedure for executing baseline correction 7 3 Spectrum Measurement This section outlines the procedure for measuring the spectrum of a sam...

Страница 56: ...level cannot be set as a spectrum output parameter a separate procedure is required refer to Section 5 7 A spectrum is output at 4 nm sec If the recorder chart speed is set to 100mm min the whole spectrum 220 420 nm will appear with 83mm length These items are summarized in Table 7 2 Table 7 2 Spectrum Output Integrator Output Recorder Output Output Level Determined separately Determined by this p...

Страница 57: ...T ENTER MONIT Wavelength Absorbance CD signal Figure7 4 Procedure for outputting a spectrum NOTE 1 Baseline spectrum has been measured before outputting sample spectrum If not so the outputted sample spectrum will not be output NOTE 2 In case SHIFT SCAN are pressed while no sample spectrum has been measured screen will not changed to spectrum output screen Artisan Technology Group Quality Instrume...

Страница 58: ...and pass through the flow cell The light which pass through the flow cell directed to the photodiode the light signal energy is transformed to electric signal If there are no CD active components in the flow cell the intensities of LCP and RCP electric signals are the same resulting DC electric signal See Fig 8 2 If there are CD active components in the flow cell LCP and RCP electric signals show ...

Страница 59: ...ponents in the flow cell Electric signal Time RCP LCP No CD active component are in the flow cell DC signal Electric signal Time CD active component are in the flowcell AC signal Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 60: ...quipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentation Artisan Scientific Corporation dba Artisan Technology Group is not an affiliate representative or authorized distributor for any manufacturer listed herein We re here to make your life easier How...

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