![I'm trying to add an instrument (GC6850) to OpenLab ChemStation, but the Instrument controller field is empty, and since this is a mandatory field I can not move forward? Please advise on I'm trying to add an instrument (GC6850) to OpenLab ChemStation, but the Instrument controller field is empty, and since this is a mandatory field I can not move forward? Please advise on](https://community.agilent.com/resized-image/__size/1018x595/__key/communityserver-discussions-components-files/26/image7315.png)
I'm trying to add an instrument (GC6850) to OpenLab ChemStation, but the Instrument controller field is empty, and since this is a mandatory field I can not move forward? Please advise on
![Agilent BioTek Gas Controllers: Regulators:Specialty Lab Equipment, Instruments, | Fisher Scientific Agilent BioTek Gas Controllers: Regulators:Specialty Lab Equipment, Instruments, | Fisher Scientific](https://assets.fishersci.com/TFS-Assets/CCG/BioTek-Instruments/product-images/1210515.jpg-650.jpg)
Agilent BioTek Gas Controllers: Regulators:Specialty Lab Equipment, Instruments, | Fisher Scientific
![Ideal Spectroscopy | Brand New Agilent Varian RGC150, RGC-150 Thermocouple Vacuum Pressure Measurement Gauge Tube Controller with NIST Certificate. PN: X3001-60150 Ideal Spectroscopy | Brand New Agilent Varian RGC150, RGC-150 Thermocouple Vacuum Pressure Measurement Gauge Tube Controller with NIST Certificate. PN: X3001-60150](https://www.idealvac.com//files/images/DSC07547.jpg)