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What is the optimal needle penetration of the OPTIC? Article rated 2.7/5.0
In general the optimum needle penetration for OPTIC (and LINEX) is 43 mm measured from the top of the septum nut. The injection speed depends a bit on the syringe type, injection volume and temperatu...
Can the OPTIC-3 and the latest version of Evolution Workstation be used on Windows 10? Article not rated yet
We have found that the latest version of Evolution Workstation for OPTIC-3 (Software:2.41 and Firmware 2.7) can only work in Serial mode with Windows 10. Officially we do not support this any more.
What should be the minimum and maximum Air pressure for the OPTIC cooling valve? Article rated 3.0/5.0
The OPTIC inlet is standard cooled with Air, the Air supply to the valve on the back of the OPTIC controller should have a minimum pressure of 1 BAR and maximum of 7 BAR. For normal operation 5 ...
How far must the column go into the OPTIC inlet? Article rated 3.7/5.0
With the OPTIC-3 and 4 units a tool is provided to install the column. A full description can be found here...
What is the maximum temperature of the OPTIC? Article rated 3.0/5.0
The maximum temperature of the OPTIC (versions 1,2,3,4) is 600°C The maximum ramp rates are different, OPTIC-3 max ramp rate is 30°C/sec and OPTIC-4 is 60°C/sec.
Can I use metal ferrules with the OPTIC inlet? Article rated 3.4/5.0
Yes, metal ferrules are available for OPTIC-3 and OPTIC-4. Please take care that you use a different nut, the standard supplied nut should not be used. 
I see solvent tailing in my chromatogram, what can I do? Article rated 3.0/5.0
- Too much solvent tail can be related to an injection with too much solvent going to the column, please use longer vent time.- There are some o-rings that are no
How can I clean the OPTIC inlet? Article rated 3.4/5.0
Check our YouTube channel or follow the steps below Cleaning steps:
I have unstable flows and pressure, what could this be? Article rated 2.6/5.0
- Most common error is a leak. Replace the septa and check for leaks. Also replace the ferrule and install the column. - Check if column parameters are set correctly. (done in the configura...
Is the OPTIC inlet compatible with PAL SPME-Arrow? Article rated 3.0/5.0
Yes, OPTIC-4 is compatible with PAL SPME-Arrow but you need a special Top Boss.
Can I do On-Column with OPTIC? Article rated 3.0/5.0
The OPTIC inlet can also be used for on-column injections. GL Sciences has designed a tool that enables true on-column injection using OPTIC inlet without an on-column liner. The on-column tool is ver...
The Inlet or CryoTrap won’t heat up and the value remains 0 / zero Article rated 3.0/5.0
Zero (0) temperature value suggests that the processor board has no communication with the inlet board. Pleas
CryoTrap temperature is not stable, what you be the problem. Article rated 3.0/5.0
Problem with unstable CryoTrap temperature at low and high temperature.
Can I use a polydimethylsiloxane (PDMS) coated stir bar with OPTIC? Article rated 3.0/5.0
Yes, most of the stir bars used have an OD of 3.2mm and the OPTIC standard fritted liner has an ID of 3.4mm.    
Can the Merlin Microseal be used with the OPTIC? Article rated 3.0/5.0
Yes, the Merlin Microseal Septum fits standard on the OPTIC 3 and 4. It's however important to use it with the correct needle gauge, and do not over tight the injector nut. The needle gauge should be ...
I have a standard OPTIC-4S and I want to make a liquid pyrolysis of a polymer, is that possible? Article rated 3.0/5.0
Yes, with all versions of the OPTIC-4 it is possible to make a liquid pyrolysis. All you need is the correct liner and OPTIC method to perform a pyrolysis. There is no extra hardware needed. The foll...
The polyamide of the first part of the column is gone. Article rated 3.0/5.0
The OPTIC inlet can heat fast and can go to very high temperatures. Most GC columns have a maximum temperature of 240 till 400 depending on the coating and stationary phase. The OPTIC inlet can go ti...
How can I optimize my Large Volume Injection (LVI) ? Article rated 3.0/5.0
Optimization Routine For Large Volume Injection This LVI routine is based on OPTIC and fast (not speed controlled) injections. A packed liner (sintered liner is
Can 2 OPTIC's be installed on one GC and one computer? Article rated 3.0/5.0
Yes it is possible to have 2 OPTIC-4 units in one GC and the software on one computer. But for the second unit it is needed to have a special Evolution Workstation. This version
I want to add a temperature step in the Expert Method, but cannot do this because it is greyed out. Article rated 3.0/5.0
In order to have an extra step in the Expert Method you have to move the mouse into the graphic part of the method and click the right mouse button. Now click Add Step.
Evolution Workstation has stopped working. error. Error "left axis". Article rated 3.0/5.0
Do you get an error like to picture below, it could be related to the log file. Please go to the Evolution Workstation folder on the installed drive (normally C:\ATAS\Evolution Workstation 4) locate ...
Is there a log file available? Article rated 3.0/5.0
The OPTIC software Evolution Workstation has 3 different log types: - There is a log file of the instrument actions and error's. When the software has a standard installation, the file can be found he...
How can I do floating of Inlet temperature in Expert Method? Article rated 3.0/5.0
In the Expert Method there is no selection for Temperature Control (Keep Until End / Floating). So it looks like it is not possible to make a floating temperature. The way to do this is...
Evolution Workstation does not hold the settings like IP address etc. Article rated 3.4/5.0
When Evolution Workstation is installed without administrator rights it will not keep the setting like IP address USB port or other settings. This happens with versions older than 4.6.5.  The so...
What can I do with 'Run Time Data' from Evolution Workstation? Article rated 3.0/5.0
When the Safe Run Time Data is On a data file will be created in the method folder for each run. The file contains all raw data of the OPTIC parameters. The file is a .dat file and...
Can I use a metal column in the CrypTrap of the OPTIC? Article rated 3.0/5.0
No, sorry it is not possible to use a metal column in the OPTIC CryoTrap. The CryoTrap uses a direct heating technique, when a metal column is inserted it will shortcut the heater.
Can I use a metal column in OPTIC Inlet? Article rated 3.0/5.0
No, the OPTIC inlet is heated with a direct heating technique, this means that a current goes true the metal inlet tube here the liner is placed. If the inlet body is in contact with the chassis of th...
How often do I need to replace the Split Line Filter? Article rated 3.7/5.0
The OPTIC-3 and OPTIC-4 have a filter in the Split liner to protect the Electronic Gas Control. This filter needs to be replaced minimum once per year, but if you run very dirty samples you must repla...
My Split line is blocked very fast, what can I do? Article not rated yet
When very dirty samples are used it could be that the Split line of the OPTIC inlet gets blocked or partially blocked. When column backflushing is used this problem can be bigger. To reduce the ...
Can the industry-standard (¼-inch (6.4 mm) o.d. x 3½-inch (89 mm) long) sorbent tubes be used with OPTIC? Article rated 3.0/5.0
Introduction Analytical thermal desorption, known within the analytical chemistry community simply as "thermal desorption" (TD), is a technique that concentrates volatile organic compounds (VOCs) in g...
Errors and Warnings / OPTIC-4 Article rated 3.0/5.0
All OPTIC-4 error and warning messages are displayed in the status pane of the Evolution Workstation.   >>
No pressure readout in the OPTIC Status View Article rated 3.0/5.0
When the split line of the OPTIC 3 or 4 is completely blocked there will be no pressure readout in the status view. With a partial blocked split line the unit will
Gas connection leaking / Coupling leaking Article rated 3.0/5.0
The gas lines from and to the OPTIC inlet body have a connector on a distance of about 35 cm from the inlet.  The tubing's are
If we were to use a pre-column, do we need to set the column length to be longer in the OPTIC software (pre-column + analytical column)? Article rated 3.0/5.0
With the OPTIC-4 it is possible to configure 2 columns in series and here it is not needed to calculate an average column length (pre + analytical column).
PTFE ring looks broken on Top Boss (top of inlet) Article rated 3.0/5.0
The PTFE ring that is mounted on the Top Boss of the OPTIC inlet has a slit. It looks like that the ring is broken, but this is normal and it is done for the production of the Top Boss part.
OPTIC-4 Gas Control Connections. Article rated 5.0/5.0
Question; On the back of the OPTIC-4 the gas lines are connected to the Gas Control. I try to figure out what line is the Split, Carrier and Septum Purge. Answer; Please check the picture below....
Black parts in the liner / inlet and I have a carry over problem Article not rated yet
  When the column nut of the OPTIC is tightened too strong the ferrule moves up into the inl
LINEX Method doesn't start when I use the Run Button. Article not rated yet
The LINEX Methods in Evolution Workstation are methods made for the liner exchanger. This method expects a Run Signal from the PAL System and not from the operator.  The 'Run 
CryoTrap cannot reach low setpoint Article not rated yet
If the cryotrap cannot reach the low setpoint it could be related to: LN2 version;
Higher Nitrogen signal with low split flows, problem or not? Article not rated yet
So now and then we get the question if there is a leak in the system when low split flows are used. When the Nitrogen signal is checked with a MS Detector you will find a higher Nitrogen level w...
I am not sure what liner I should use. Article not rated yet
If you are not sure about what liner to use, please download the liner selection guide.
Do I need Peltier cooling with the OPTIC inlet? Article not rated yet
The OPTIC inlet is standard supplied with Air cooling. The Air cooling of the OPTIC is very fast because the OPTIC inlet has a very low thermal mass. The Air cooling can be used to cool the inlet till...
Can I get a CryoTrap without the OPTIC inlet? Article not rated yet
Yes, we have a stand alone CryoTrap. The stand alone CryoTrap is called CryoFocus. The CryoFocus can work with any GC and is simple to install. It come also
the film of the column is gone at the entrance and the exit of the cryotrap. Article not rated yet
When the coating of the column is burned like the picture above, this can be 2 reasons: - the maximum temperature of the trap is a bit too high for the column. Reduce the temperature with 20&d...
Split flow measured at the Exhaust is wrong. Article not rated yet
When the OPTIC-4 is in Split mode (method is running) it is possible to measure the Spilt flow at the Exhaust on the back of the controller (done with an external flow meter). If there is no leak, the...
support for OPTIC-2 or OPTIC-3 Article not rated yet
The OPTIC-2 and OPTIC-3 are out of service and we do not have parts any more more these units. So broken instruments cannot be repaired, sorry. The liners, ferrules and o-rings are still the same as ...
Software Access Control, lost password Article not rated yet
Sometimes it happens that the password for the Evolution Workstation Software Access Control is lost. If this pappend to you, no problem. Please log in as Super User and use password 'derun4441' . Nex...

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