If anyone still has a Picarro 1102i running with original-ish software, would you please send me a screenshot of the console output that pops up when starting up the picarro software. I want to see the pieces of software that are "not found". I know these "not found" messages don't matter, but I would like to see exact what is not found so I can troubleshoot out 1102 that we are trying to resurrect.
Bringing your attention to a upcoming livestream regarding the importance of climate science funding for society: https://wcstreamathon.netlify.app/
I know there are many of us on this listserve that do paleoclimate work or atmospheric chemistry work, and this livestream effort is still searching for speakers to fill all 100 hours of the livestream. They are absolutely interested in speakers who can attest to the importance of climate science, broadly defined!
I am considering building an online sample tracking portal website that could be used by geochemistry labs.
The idea is that laboratory customers could preregister their samples online and print out QR codes to attach to their samples before sending them in the post to the laboratory. The laboratory can then scan the samples to update their status (arrived, measured, etc.), and customers could download the finalised data from the portal. It may also be possible to set up a sample queueing system and/or a billing system.
Interesting idea. Do you see this as a single hosted service (one server handles many independent labs), as a self-hosted FOSS solution (each lab can host their own server instance and keep their data private), or both?
Thanks,
- Mathieu
> On 22 May 2025, at 14:43, Bryan Lougheed <[log in to unmask]> wrote: > > Dear Colleagues, > > I am considering building an online sample tracking portal website that could be used by geochemistry labs. > > The idea is that laboratory customers could preregister their samples online and print out QR codes to attach to their samples before
We accidentally down-graded our PAL autosampler's firmware without having a backup and now the autosampler is quite mad at us (we have no option to enter into menus, everything is blank). Does anyone happen to have a firmware version 4.x or high 3.x that they would be able to send? If the file is large, I can provide some kind of transfer link.
Hi Jordan, I am assuming that you have Thermo equipment for this reply:
I quote here with an excerpt from a letter received several years ago from an autosampler specialist (https://www.autosamplerguys.com/). I can recommend them for helpful service.
The Finnegan software is particularly invasive into the PAL code. It was initially written for the HS500 (a CTC autosampler from the late 70s to the early 90s) back in the 80s and since then the new PAL only works with a HS500 compatible mode using a real old (I believe 2.03) firmware.
Our lab is actively looking into obtaining gases of known δ13-CH4 and δD-CH4 values to use as reference gases. Ideally, we would want to have a range of isotopically light and heavy δ13-CH4 and δD-CH4. Due to the nature of our samples, we need to operate at low CH4 concentrations, so we would need our reference gases to be at concentrations of around ~ 5 ppm.
Hi Claudia, Air Liquide/Airgas offers stable isotopically-calibrated hydrocarbon gases with an option to order custom mixes prepared using your specifications. The product line is ALPHAGAZ™. See the link below.
On Wed, May 21, 2025 at 3:21 PM Claudia Isabel Roig <[log in to unmask]> wrote:
> Hi all, > > Our lab is actively looking into obtaining gases of known δ13-CH4 and > δD-CH4 values to use as reference gases. Ideally, we would want to have a > range of isotopically light and heavy δ13-CH4 and δD-CH4. Due to the nature > of our samples, we need
I'm continuing today's Picarro water isotope theme with two questions:
1. Are any labs routinely running standards with seawater-like salinities? If I add instant ocean to aliquots of existing in-house standards would it be reasonable to correct data to their accepted fresh values (we'd use the salt liner on a L2140i)?
I use primary standards only to calibrate my secondary ones. I keep these in glass ampoules (room temperature, dark) and after breaking them, I fill four 2-ml glass vials which I keep in fridge (4 C). I use one vial per week. After four weeks, I break a new one. As such, the longest I keep a vial in the fridge before using it is 3 weeks (four, by the end of its usage). I kept several vials for months in the fridge for testing purposes and determined d18O and d2H without observing noticeable changes in the isotopic
Does anyone out there have experience updating the onboard concentration dependence correction on the current-generation Picarro water isotope analyzers? Specifically, I'm looking for information on the functional form of the correction and where (in which config file) the parameter values for this correction are stored.
After some work one of our 2130's is showing a fairly strong concentration dependence (~1 per mil d2H per 1000 ppm) in the concentration range where we commonly measure (~18,000 ppm). This is strong enough that normal variations in injection volume are substantially reducing the data quality. I'd prefer to deal w/
While I’ve heard of concentration dependence, I haven’t experienced it directly. That said, my workflow may differ quite a bit—I was introduced to the Picarro during COVID in the Goldsmith lab, with minimal official support, so most of what we did was home-brewed. From your description, I wonder if you might be seeing a variant of the memory effect, where the correction for SMOW-SLAP normalization gets skewed. (Though I could be off.) Following Johnny Keinan’s advice, I typically rank my samples after a quick three-injection unstandardized run to get a rough δ value for each one, then arrange
Some of us have exchanged over the last year+ regarding using a PAL with a water picarro that has windows 10 or greater. These newer versions do not support PAL autosamplers.
Has anyone made specific progress?
I know it is possible for any computer to drive a PAL given the basic communication requirements but I wonder how integrated folks have been able to get it into picarro’s software.
Hi Andy, I like to integrate things with AutoIt. We integrated Picarro and an AIRICA years ago using this route. I had an old PAL converted into a liquid handler also using this route, but with some more work including rewiring the stepper motors to a 3D printer control board. Just some ideas that could maybe expand your options. Regards,
We have critical issues with our EA-Flash 2000. The Thermo engineer replaced the O-ring and reactor.
After that, the system has a leak, as the peak of the sample is delayed over time and decreases in size.
After another check from the engineer, he recommended running multiple samples to stabilize the instrument further. During that process, we encountered another issue: when we inject the sample, no peaks appear, but in the subsequent run, which is a blank, the peak appears. The engineer suggests that the reactor has a delay.
Dear Mahmoud, As you have stated the problem being leakage, then the task is to locate and repair that leak. Did you confirm the existence of leakage with a helium detector? I highly recommend these devices. Without a leak detector, closing off the flow path at various places, winding out the helium regulator on the EA, and watching for pressure loss is the standard method for leak location. Late and reducing peaks can be caused by blockages as well as leaks. It is essential to be thoroughly familiar with your device and to be able measure carrier flow rate at
On Tue, May 20, 2025, 02:32 Robert Van Hale < [log in to unmask]> wrote:
> Dear Mahmoud, > As you have stated the problem being leakage, then the task is to locate > and repair that leak. Did you confirm the existence of leakage with a > helium detector? I highly recommend these
Dear colleagues, just a short note to let you know that:
??*The deadline for regular abstract submissions has been officially extended toFriday, 30 May 2025.*Please note that no further extensions will be possible. Share your research with the global soil science community and ensure your oral slot. Submit yourabstractto EUROSOIL now. A*last minute submission deadline is also available (Jul 15th), but*your abstract will be considering*only as a poster*presentation. More info:https://www.eurosoil2025.eu/eurosoil2025/call-abstracts/guidelines <https://mandrillapp.com/track/click/30005146/www.eurosoil2025.eu?p=eyJzIjoiaHhiSzZnenFpZW5MbEowb2xKUnpkMjNhelFvIiwidiI6MiwicCI6IntcInVcIjozMDAwNTE0NixcInZcIjoyLFwidXJsXCI6XCJodHRwczpcXFwvXFxcL3d3dy5ldXJvc29pbDIwMjUuZXVcXFwvZXVyb3NvaWwyMDI1XFxcL2NhbGwtYWJzdHJhY3RzXFxcL2d1aWRlbGluZXNcIixcImlkXCI6XCI5MDA3ZGFlZTg5NmY0NDhiODk4YzU0NjBiNzUzMmE3ZVwiLFwidXJsX2lkc1wiOltcIjU0YjQ2NjAzMzljNjVhOGRmNThiYTMyODZjODM3NTQ1MTMxMTlmMDFcIl0sXCJtc2dfdHNcIjoxNzQ3MjI0Nzg0fSJ9>
Anyone out there who has experience with GC PAL autosamplers and has seen this error object "A200S-9” not found? Happens when the GC PAL receives start signal and consequently the sampling routine is aborted.
Any suggestions how to fix this problem will be very much appreciated, Leonardo
This is for combination of PAL 2 with ISODAT (for GC-IRMS probably), right? I haven’t work with this combination for a while, though if I remember corectly this looks like a name for an injection method that can be selected by ISODAT. Maybe you deleted it from your PAL, so simply have to make a new method on the PAL.
I was asked this week to write a public-facing essay/opinion piece pointing out why the National Science Foundation is so important to the United States and its citizens in the face of unprecedented cuts proposed by the current administration.
Here’s the URL: https://theconversation.com/unprecedented-cuts-to-the-national-science-foundation-endanger-research-that-improves-economic-growth-national-security-and-your-life-256556
Please pass on the URL by email as you if you can and if you agree. Social media posts would be great.
Very well written and a great effort. The situation is looking grim and grimmer by the day, but one has to hope that the pretty obvious benefits of science funding to the public good will win out. We will see, but if history tells us much, it tells us that the waning days of Rome were increasingly erratic and fitfull.
Everyone, the feedback I have gotten today from dozens of emails is simply condensed to:
1. Why aren’t scientists making a bigger deal of this and 2. Why don’t the American people care (or at least why are they not making noise about loss of science)
My response is that those of us who are secure in our jobs should be making that big deal for those who can’t and that we need to talk to non science citizens and explain how science matters.
After ~45 years spanning natural and industrial sciences, here is some unsolicited advice about science communications to the public:
* Avoid the “scientific echo chambers” and just “Scientists talking to scientists.” * Reach out into the “scientific deserts.”
As Abraham Lincoln said, “Young lawyer, don’t shoot too high – aim lower, and the common people will understand you. They are the ones you want to reach – at least they are the ones that you ought to reach. The educated and refined people will understand you anyway. If you aim too high, your idea will go over the heads of
I just sent emails to the editors at Fox news and the Wall Street Journal with a link to my NSF essay offering to talk to anyone who would listen.
We need out of our echo chambers and talk to everyone because science matters to everyone! p
From: Stable Isotope Geochemistry <[log in to unmask]> on behalf of John Jasper <[log in to unmask]> Date: Friday, May 16, 2025 at 7:06 AM To: [log in to unmask] <[log in to unmask]> Subject: Re: Supporting the US National Science Foundation After ~45 years spanning natural and industrial sciences, here is some unsolicited advice about science communications to the public:
Dear all, The Noble Gas Lab at CSIRO in Adelaide, Australia, has an open position and we seek candidates with experience in noble gas analysis on fluids, mostly groundwater (and further applications fluid inclusions, soil gas and oceanography). Experience in noble gas analysis is a requirement, experience in multi-tracer groundwater assessment and interpretation certainly beneficial. There is ample opportunity for groundwater related field work all over Australia, targeting groundwater systems, their connectivity, to quantify recharge, conceptual and numerical modelling. The position allows a combination of field work, lab work, and system understanding at the forefront of (ground)water science. We operate
**first message bounced back; not sure why - sending again with shortened url's **
Dear all,
We have a vacancy for a Research professorship at the University of Leuven (KU Leuven, Belgium) which might be of interest to some of you (isotope work not a prerequisite, but welcome and possible).
Short description below, full description and info via the link below.
We will have the IsoNetECR May 2025 Seminar on Monday, 26th May, 2025, at 17:00 CEST.
*Dr. Naizhong Zhang* (EMPA: Swiss Federal Laboratories for Materials Science and Technology) will give a presentation on *"**Pros and cons of methane clumped isotope analysis by high-resolution isotope-ratio mass spectrometry and laser absorption spectroscopy**".*
Seminar Information <https://isonetecr.wixsite.com/my-site/event-details-registration/seminar-naizhong-zhang>
Hi Everyone My ramped GC is stuck on 40 degree C. I can turn the GC on from the software and it states it is going up to 200 degrees, but none of the halogen bulbs light up. I’ve checked fuses by on/off switch and they are fine. Any ideas what could be wrong? Is there another fuse in the system? I do not have any of the technical drawings for this piece of kit.
Maybe this is too simple but these bulbs don't exactly have a long lifetime. When was the last time you changed all the bulbs?
cheers, Reba
On Tue, May 13, 2025 at 2:51 PM GROCKE, DARREN R. <[log in to unmask]> wrote:
> Hi Everyone > My ramped GC is stuck on 40 degree C. I can turn the GC on from the > software and it states it is going up to 200 degrees, but none of the > halogen bulbs light up. I’ve checked fuses by on/off switch and they are > fine. Any ideas what could be wrong? Is
Did you replace all the bulbs? I vaguely recall some of the bulbs running in series. Ryan
On May 13, 2025, at 16:51, GROCKE, DARREN R. <[log in to unmask]> wrote:
Hi Everyone My ramped GC is stuck on 40 degree C. I can turn the GC on from the software and it states it is going up to 200 degrees, but none of the halogen bulbs light up. I’ve checked fuses by on/off switch and they are fine. Any ideas what could be wrong? Is there another fuse in the system? I do not have any of the technical drawings for
There is a hidden switch that turns off in case of overheating. You need to remove the oven to find out. Do you have the GC Ramped Manual?
Cheers
Jorge
On Wed, May 14, 2025 at 9:51 AM GROCKE, DARREN R. <[log in to unmask]> wrote:
> Hi Everyone > My ramped GC is stuck on 40 degree C. I can turn the GC on from the > software and it states it is going up to 200 degrees, but none of the > halogen bulbs light up. I’ve checked fuses by on/off switch and they are > fine. Any ideas what
Hi Darren, Ramped GC T2 is triggered by the IRMS and not the EA, so also check that the Plug and Measure serial cable is connected from the IRMS to the GC and configured correctly.
On Tue, May 13, 2025 at 11:52 AM GROCKE, DARREN R. <[log in to unmask]> wrote:
> Hi Everyone > My ramped GC is stuck on 40 degree C. I can turn the GC on from the > software and it states it is going up to 200 degrees, but none of the > halogen bulbs light up. I’ve checked fuses by on/off switch and they are > fine.
Have you tried the "hidden" reset button? If you take the whole ramped GC unit off the back of the FlashEA (assuming it is hanging off the back like ours is) and remove the panel that is usually between the GC oven and the FlashEA, you will find a reset button hidden there that might solve your problems. We had similar issues when we left the GC at high temperature for too long (bakeout method) and solved this by splitting the bakout up into shorter increments (240C for 5-10 cycles of 15 minutes seemed to be long enough
Hello, in the picture below you can see where to find the reset button for the Ramped oven. The reset button is hidden on the back of the GC add-on module, between the furnace and the EA body. The exact location can be seen in the picture. It is best accessed after removing the furnace, but with a little effort you can also press it with some suitable hook that you insert into the gap.
Thank you everyone for all your suggestions. I will let you know how it goes when I get back from the field. So glad we have this list to communicate and help one another.
Cheers Darren
Prof Darren R. Gröcke
Stable Isotope Biogeochemistry Laboratory (SIBL) Department of Earth Sciences/Archaeology Durham University South Road, Durham County Durham DH1 3LE, UK
This is a question for labs that measure nitrate isotopes using the denitrifer method.
If the mass spec is not immediately available, how do you preserve processed samples?
Weigand et al. talk about freezing the samples after injecting and incubation in such cases (Updates to instrumentation and protocols for isotopic analysis of nitrate by the denitrifier method - Weigand - 2016 - Rapid Communications in Mass Spectrometry - Wiley Online Library <https://analyticalsciencejournals.onlinelibrary.wiley.com/doi/full/10.1002/rcm.7570> )
I can confirm that our lab in Mainz is using the freezing method successfully. It is not used often, but I have not heard of any problems.
Florian
Dr. Florian Rubach
Abteilung Klimageochemie
Max-Planck-Institut für Chemie
From: Stable Isotope Geochemistry <[log in to unmask]> On Behalf Of Pratirupa Bardhan Sent: Tuesday, May 13, 2025 9:10 PM To: [log in to unmask] Subject: [ISOGEOCHEM] Preservation tips for nitrate isotope samples
At a certain point we had some issues with processed samples that had been kept frozen. I attributed it to a less good sealing of the caps due to hardening of the grey butyl rubber at low temperature (though never formally tested this). Therefore we simply keep processed samples that cannot be analysed imidately upside down at room temperature till analyses (just before analyses we centrifuge them quickly after adding a drop of antifoam). At the verry high pH (after addition of NaOH) I do not believe that microbial activity interacting with the N2O is realistic.
If I recall correctly, we had some issues after prolonged storage in very basic conditions that we ultimately attributed to this being basic enough to attach the glass. So we avoid that now for longer term storage.
Florian
From: Stable Isotope Geochemistry <[log in to unmask]> On Behalf Of Samuel Bodé Sent: Wednesday, May 14, 2025 6:24 PM To: [log in to unmask] Subject: Re: [ISOGEOCHEM] Preservation tips for nitrate isotope samples
Thank you very much Robyn, Florian and Samuel for sharing your experiences.
Florian, I have a follow up question : Do you freeze vials after injecting sample and overnight reaction time (as mentioned in the Weigand paper) OR do you kill the bacteria and then freeze them (as Robyn mentioned)?
Best, Rupa.
On Thu, May 15, 2025 at 6:41 AM Rubach, Florian < [log in to unmask]> wrote:
After the overnight bacterial digestion, sodium hydroxide is added to the samples, shaken, placed upside down, and frozen (temp? -20C, -60?) until ready to run. No issues so far.
We have a vacancy for a Research professorship at the University of Leuven (KU Leuven, Belgium) which might be of interest to some of you (isotope work not a prerequisite, but welcome and possible).
Short description below, full description and info via the link below.
Research professor in soil-plant-water interactions in agro- and ecosystems We seek a candidate to develop an innovative research programme on the soil-plant-water interactions and processes acting in the critical zone. Research on the soil-plant-water nexus can be carried out at or across different scales ranging from the plot to the catchment scale, but
The U.S. Geological Survey’s software applications LIMS (Laboratory Information Management System) for Lasers and LIMS for Light Stable Isotopes now run under both 32- and 64-bit Windows operating systems.
They can be found at https://www.usgs.gov/software/reston-stable-isotope-lab-laboratory-information-management-system-lims-lasers-light
Tightening lock screws and threading adapter in Figure 26 of New Acid Delivery System manual is tricky in that we bear in mind that without compressed air, the acid valve is open (one can see a groove on top of the bottom sylinder. Once the acid valve is closed, that groove position moves down). There’s also a possibility that the compress air pressure dropped during the accident so the valve remained open.
I have a quick question regarding sensitivity on a new Thermo GC-irMS system. What is the range you expect for peak area per ng injected, for alkanes, for CO2?
We're getting around 1/3 the sensitivity on our brand-new Delta Q-GC Isolink II-Conflo IV-Trace 1610 GC system as on our two older systems. MS is fine (correctly tuned, good response for ref gas), chromatography is beautiful, reactor is well-oxidized, inlet is properly maintained, syringe is new, method is correct, and so we're scratching our heads...
We pretty much only measure n-alkanes...we typically target 20-25 ng injections for d13C and get peak areas of ~ 15-20 Vs with amplitudes of ~ 4000-5000 mV. I would not be surprised to see values (in terms of sensitivity) to have a range of +/- 50% of these between any two instruments depending on all the specifics of setup, operation, and equipment age.
We once had the MS capillary in the sample split of the Conflo IV slip and fall below where it was supposed to be up inside the GC capillary. You can double check it's placement.
We are looking for any advice on an issue we have been troubleshooting for the last couple of months.
An overview of the situation is:
We are running a fatty acid methyl ester (FAME) standard mix that contains C12, C14, C16, C18, C20, and C28 FAMEs on our GC-IsoLink+MAT253 system in combustion mode. We have used these FAMEs for 10+ years and never had any issues. The standard is prepared in-house by measuring out the individual compounds, combining them, and dissolving them in DCM.
My immediate thought would be to try analyzing the individual standards (vials confirmed to have good SDs) and the mixed standard (vial confirmed to have bad SD for those compounds) by GC-MS and see if there are coeluting contaminants being introduced when mixing.
It sounds like you've ruled out quite a bit. To troubleshoot further, you could make stock solutions of each compound at relatively high concentration (~10x your target concentration for good d13C measurement). Start with, say, C18 and dilute an aliquot to appropriate concentration and measure several times to confirm good performance. Then, take aliquots of
I just saw your post at ISOGEOCHEM about the unexpected δ¹³C values of C18:0 and C20:0 FAMEs and that sounds like a really challenging issue, and you've done a lot of thorough troubleshooting already!
Two things came to mind that weren't explicitly mentioned:
Carryover Check: Have you tried injecting a solvent blank immediately after running the full FAME mix? This could help see if any ghost peaks or baseline disturbances appear around the C18/C20 retention times, which might indicate carryover contributing to the inaccuracy and irreproducibility. Trend Analysis: You mentioned running 8 consecutive injections. Have you plotted the
We ran the standard mix on the GC-MS and it was very clean - no other peaks save for the ones that were supposed to be there. We also ran a DCM solvent blank after several FAME standard injections. There were no carry over peaks.
A link to the posting and where to begin the application is below. Please share with interested parties.
Note: Visa sponsorship is not available for this position. Candidates must hold Australian working rights to be considered for this position.
Research Manager – NCRIS Radiocarbon will lead a research project between the CHRONOS Radiocarbon Laboratory and the Centre for Accelerator Science, at the Australian Nuclear Science and Technology Organisation (ANSTO) as part of National Collaborative Research Infrastructure Strategy (NCRIS) funding.
We are running 2-day workshop entitled “The alkenone CO2 proxy: present state and future directions”, 5th-6th July in Prague, prior to Goldschmidt. We are keen to hear from researchers interested in the theory of alkenone CO2 reconstruction, including researchers looking at more general phytoplankton CO2 reconstruction. We would also encourage attendance from anyone who uses or is interested in using the proxy.
Hello Can anyone direct me to where I can purchase water standards that are d17O certified? I’ve looked at the IAEA ones, but they are all listed as uncertified. Cheers Darren
The Department of Earth and Environmental Sciences at Lehigh University is hiring a Laboratory Facilities Technician.
The Laboratory Facilities Technician will provide essential technical support for the Earth and Environmental Sciences laboratories at Lehigh University. This role is responsible for the operation, maintenance, and repair of various analytical instruments, including mass spectrometers (noble gas, gas chromatographs, inductively coupled plasma, and stable isotope ratio mass spectrometers) and a scanning electron microscope. Additionally, the technician will support the logistical needs for fieldwork, innovation projects, and the upkeep of laboratory equipment. See below for further details.
when we measure Sr/Ca on simultaneous /opticaI/ ICP (ICP-OES - which is quite common now) and use a bracketing approach (known sample before and after each sample) the RSDs of ratios are typically less than 0.35% for Sr/Ca (avg 0.13%) and less than 0.3% for Mg/Ca (avg 0.1%).
Best Martin
On 07.05.25 10:41, Mudelsee M wrote: > > Dear colleagues, > > > I am pretty aware that my question is likely difficult to answer on a > general basis since measurement practices and situations (type of > material, collection of material, sophistication of device, standards, > etc.)
I'd estimate 2-5% by Q-ICP-MS, slightly better by HR-ICP-MS (where Ca can be measured more precisely against 44CO2 and 44N2O interferences). ICP-OES is better than 0.5%, and isotope-dilution (MC-)ICP-MS could be better than 0.1%.
In any case though, you are correct that York Regression is the way to go whenever you have errors in both the x- and y- variables. This is standard in geochronology and all the same tests and standards should in theory apply (e.g. MWSD) just like you were making an isochron.
Hi all, This isn't exactly a stable isotope question, but I have trouble finding any information online, and you guys seem to know everything. My colleagues have a Flash Elemental Analyzer which they mostly use for TN and TC measurement in solids. But now they want to measure TN in urine. The provider of their equipment installed a larger water trap and said they should be good to go. They were advised to use chromosorb, but they try to skip this part, by simply inserting 0,1 ml of water into tin capsules and carefully closing them. They tell me that
Hi Piotr If you can pipette a few drops into a small tin capsule (record empty cap weight first) and freeze-dry or oven dry the capsules, then place them in another (larger capsule) and compress the pellet, you will likely get more accurate total N and C weight% and delta values, without wet sample issues. Cheers
Hi Piotr, I have'nt heard of a PTFE type material like Chromosotb being used as a moisture trap. I use P2O5 based materials (Siccapent), if you can't get hands on that (no longer avialable), try Mg(ClO4)2 or similar (Drysorber, Wetsorber) For TN and TC one would want something like 50 µg of nitrogen or carbon in your sample (rule of thumb). I am not sure to what percentage urea, creatine and nitrate may add up in urine, but I wouldn't think them adding up to more than say 3%. Therefore you may be not in a good place using 100
You may freeze-dry the urine directly in the capsules. Perhaps an acidification is needed to avoid NH3 losses,
Kind regards, Per Ambus
From: Stable Isotope Geochemistry <[log in to unmask]> On Behalf Of Piotr Chibowski Sent: Monday, May 5, 2025 9:53 PM To: [log in to unmask] Subject: [ISOGEOCHEM] TN measurement in liquid using a Flash EA
Du får ikke ofte mails fra [log in to unmask]<mailto:[log in to unmask]>. Få mere at vide om, hvorfor dette er vigtigt<https://aka.ms/LearnAboutSenderIdentification>
I'm pleased to share that *registration is now open* for the 9th conference of the Forensic Isotope Ratio Mass Spectrometry (FIRMS) Network. Details are available here:
The conference will take place 15-18 September 2025 in London at the Royal Society of Chemistry's Burlington House. Please note that space is limited due to venue capacity.
I’m reaching out to let you know that I have funding available for a short-term postdoctoral position that runs through the end of September. Due to the current unpredictability in funding cycles, I’m hoping to connect with someone who might be looking for temporary stopgap work at the postdoc level, and who is currently already in the USA.
Hello, The call for applications for the IRD Junior Professorship at CEREGE on “Evolution of the critical zone in the face of global change in the Mediterranean and intertropical Africa: processes and impacts on socio-ecosystems” has been published:
=== apologize for cross-posting === Dear Colleagues,
The International Climate Resilience Conference will take place in Munich from 26–29 October 2025. 🌐 *www.climateresilience.info* <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.climateresilience.info_&d=DwMGaQ&c=WO-RGvefibhHBZq3fL85hQ&r=l0NX9fZoxwSEEsHAPTRkdOGR97vOa0FhEJPSPSt1ZtQ&m=y1IIrkjOmNq42Yv0rkak5_ko8MLJ0VpSOJ0TLFMTGUnpzOQwUT1G_L25rWzKQqJs&s=9E4Q72w7YM7kquxLV8k2R2-VFgEqjPPxpav8fzhylcU&e=> Abstracts can be submitted by *30 May 2025*. 🔗 [Link to Call for Abstracts <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.geo.lmu.de_geographie_de_forschung_mensch-2Dumwelt-2Dbeziehungen_climate-2Dresilience-2Dconference-2D2025_abstract-2Dsubmission_&d=DwMGaQ&c=WO-RGvefibhHBZq3fL85hQ&r=l0NX9fZoxwSEEsHAPTRkdOGR97vOa0FhEJPSPSt1ZtQ&m=y1IIrkjOmNq42Yv0rkak5_ko8MLJ0VpSOJ0TLFMTGUnpzOQwUT1G_L25rWzKQqJs&s=JCNc5oYEkCL7vOEBX71IYFwO_3Vrbo1sWg6Yc7eZnYI&e=>] There are 16 sessions in the conference, covering many of the most dynamic and promising directions in climate resilience research!
Haoyi, you need to let the injection head drop very low to access the screws. Depending how long the mounting legs are you might have to remove sample trays or unscrew the legs to get full drop in the z direction.
On Tue, May 6, 2025, 3:58 AM Haoyi < [log in to unmask]> wrote:
> Hi Andy, > > Following this thread, I also had problems with the z-axis, it turns out > to be the short bungee. > Replacing it is easy, but connecting the injection head back is difficult. > > I use this video as a guide. > https://www.youtube.com/watch?v=xDZEAmQTLms&ab_channel=ResolutionLabs%2CLLC >
Following this thread, I also had problems with the z-axis, it turns out to be the short bungee. Replacing it is easy, but connecting the injection head back is difficult.
I use this video as a guide. https://www.youtube.com/watch?v=xDZEAmQTLms&ab_channel=ResolutionLabs%2CLLC
but also noticed that the video said three screws, then actually only showed one screw removal and re-install. That's what happen to me, I can put in one screw, but not the other two......
I did the same thing last month, purchasing a few Siemens (3RG4200-1AB00) and Pepperl+Fuchs (same PN) proximity sensors off eBay. Average price was around $55 ea after shipping costs.
I have one of these 'new' sensors in my Kiel now and it is working fine.
I have run into the "Vial not connected" errors recently, and it was because I had a small leak in my Kiel line 1 valve, and it wouldn't connect the vial during a run. Strangely, I was able to connect the vial manually without this error; it would only fail during a run.
Since you seem to be based in Italy, I'd recommend to send an enquiry to INRIM (https://www.inrim.it/). If INRIM won't be able to offer you a suitable standard, we at NPL (https://www.npl.co.uk/) might be able to produce a standard that will likely be of interest to you. Please reach out to me off-list for contacts.
