CZ1_Questions and Answers 1232SA26Q10925.docx

Questions and Answers

1232SA26Q0925

Gas Chromatograph Single Quadruple Mass Spectrometer

Q1: There is no Library listed on the RFQ - do you require a "standard" GCMS library - NIST 2023 would be "normal".

A1: Yes, the NIST MS library bundle is required, it is listed in the instrument specifications under the Work Station section.

Q2: The autosampler for Liquid, Headspace and SPME has an automatic tool change ability or a manual change - is there a preference.

A2: There is no preference, auto tool can be included as an option.

Under GAS CHROMATOGRAPH Q3: Item 1 - Capillary flow technology - please confirm what is wanted - ability to change column without venting (Thermo Scientific offers this via our Vacuum Probe Interloc that allows the source to be removed under vacuum as well as column change without dropping the vacuum), ability to back flush, incorporation of a Deans Switch? Is the ability to add desired capillary flow technology later desired, or a specific application?

A3: There was no specific application in mind, the ability to add at a later date would be good. Could the Vacuum Probe Interloc be added as an option on the quote as the column change and source removal under vacuum is nice but not completely necessary? I don’t think a Dean’s switch is necessary.

Q4: Item 2 - GC Diagnostics - is this via a front control panel or via the instrument software (i.e. does the end user want the capability to control and run diagnostics on the GC apart from the Computer) A4: Diagnostics via both front control panel and instrument software is optimal especially via software during troubleshooting scenarios but minimum we need diagnostics via the control panel.

Q5: Item 3 - SSL Injectors - we have an ease-of-use item - spring loaded ferrule tensioner that sets the proper pressure on the ferrule, so it does not fail due to insufficient tightening, or leak due to over tightening and cracking the ferrule. Would this device be desired and therefore listed?

A5: Could this be listed as an optional tool, this would be optimal but not a necessity.

Q6: Technology advances - Thermo Scientific has several items that add ease of use, higher uptime, and faster maintenance:

A6: Appreciate the additional information on the system.

a. Vapor Probe Interlock - The Thermo system has an optional technology that allows the entire source to be removed from the mass spectrometer without venting Easy Vent-Free Source Removal on the Thermo Scientific ISQ GC-MS System With the VPI option, the system can bypass the GC column and insert samples directly into the source with two special tools – the Direct Insertion Probe that uses solid/semi solid material placed into a tiny quartz crucible, or a Direct Exposure Probe that is for liquid samples that get placed onto a Re wire – with the ability to go to ~ 1200C. Brominated flame retardants not normally amenable to GC can thus be detected with our system.

b. Oven Light - provides visibility within the oven so that headlamps, iPhones, flashlights etc. are not required to illuminate column or capillary flow technology items.

c. Modular GC - Thermo has the exclusive capability to change injector/detectors in minutes without a service engineer YouTube video here: Thermo Scientific TRACE 1600 Series GC: iConnect injector module replacement.

d. Ion Burn dealt with at source - our source has a heated RF quadrupole at the exit end of the source to deal with ionized He and condensing organics that cause ion burn. Rather than allow ion burn to occur in the heated gold coated analytical quads, we minimize any ion burn by heating the short source quad, and thus nearly eliminating ion burn, but allowing the unit to be removed and replaced via the VPI, or cleaned easily and rapidly should ion burn ever occur.