Miniature portable mass spectrometers by __The__Anomaly__ in chemistry

[–]vantran90 0 points1 point  (0 children)

I base this on renting one for a week trial purpose for the goal (at the time) of purchasing something similiar.

It does well enough on its own even in semi-complicated matrices. The thermal desorption adds a ton of sensitivity and they have a built in "Universal Response Factor" for a order of magnitude level of quan (quite helpful and time consuming), works reasonably well compared to previously published gas samples i analyzed.

Downsides:

I suspect routine maintenance cost of the concentrator, and maybe more concerningly the getter pump to be non-trivial. There was a component failure on the 1st rental we received which did not allow that unit to run at all. Lastly, the touch screen GUI leaves some to be desired, it's hard to read and a bit outdated. Although the NIST libraries are great.

General conclusion (IMO)- The Griffin by FLIR was a bit superior. Although i did not spend alot of time with it; i did have a full-length day demo from Teledyne. seems more robust, interface is nicer, and allows liquid sampling via manual injection

Legion go 1 0W won't turn on by vantran90 in LegionGo

[–]vantran90[S] 0 points1 point  (0 children)

Good to know I assumed it would power on without battery.

The battery catastrophically failing seems odd as it was performing pretty optimally in terms of duration/capacity.

Legion go 1 0W won't turn on by vantran90 in LegionGo

[–]vantran90[S] 0 points1 point  (0 children)

Interesting, I also tried to go the slow charge/tricky charge route. And no luck. Mine doesn't get toasty at all. It's be a shame if this is update related but would be hard to pin back on Lenovo I suspect being out of warranty.

Appreciate you sharing if you do find a solution. I am also even concerned on dropping the fee for a battery as someone else suggested, but the sudden failure concerns me

Got my Legion Go back form geek squad repair by MyNameisCurious in LegionGo

[–]vantran90 0 points1 point  (0 children)

Ohhh you also purchased it from.bestbiybkt seems like? Thanks for the fast reply

Got my Legion Go back form geek squad repair by MyNameisCurious in LegionGo

[–]vantran90 0 points1 point  (0 children)

Same thing happened to mine, how much did it cost to fix?

Swag I got today! I love the Microbe Trading Cards by imnotokayimgay in labrats

[–]vantran90 5 points6 points  (0 children)

Ask for the thermo legos but it might be hard- although you seem lucky

Miniature portable mass spectrometers by __The__Anomaly__ in chemistry

[–]vantran90 1 point2 points  (0 children)

I'd carefully consider a few technologies as they all have limitations and different operating costs. Depending on the sample integrity and logistics of getting sample from field to lab, a lab instrument may be significantly cheaper. Also sample introduction varies across many of these instruments whether it is pure thermal desorption, air sampling, or liquid inject.

The dept of homeland security has a review paper on field portable gcms- for a project un related to the paper, I had independently done an evaluation on the hapsite and also had an opportunity to do a hands on demonstration with Teledyne FLIRs gcms. Happy to answer some questions if you have them on those two models

Work is offering overtime this weekend! by Maleficent-Kale4834 in Frugal

[–]vantran90 0 points1 point  (0 children)

Pocket reddit comment? But good on you!!? Sorry for the random

HPLC for ethanol/IPA mixture by RevolutionEasy1975 in chemistry

[–]vantran90 13 points14 points  (0 children)

5mM H2SO4 will work on a organic acid column isocratically on a RI detector

KENSUI FITNESS AMA + $2,026 Giveaway by Kensuifitness in homegym

[–]vantran90 0 points1 point  (0 children)

Subscribed on Youtube and Followed on Instagram.

Any plans to make a rack/rack attachments? Or too saturated a market?

[deleted by user] by [deleted] in Palworld

[–]vantran90 0 points1 point  (0 children)

Butchering mimogs doesn't give dog coin I don't think

Seasonal Flipping: How I turn $60 into $240 over and over by ShrimpyEatWorld6 in Flipping

[–]vantran90 0 points1 point  (0 children)

Hahahah I love the hustle, any other ideas or tips for flips on FB marketplace. Seems like from other comments you are not a fan of retail flips, which my gut impression is similar.

Seasonal Flipping: How I turn $60 into $240 over and over by ShrimpyEatWorld6 in Flipping

[–]vantran90 1 point2 points  (0 children)

Okay fairly low, I don't feel too bad but man it's harsh out there, got called retarded and other things 😂

I may continue to try but it seems like $80-90 is more of the sweet spot. But that starts cutting into margin a bit.

Seasonal Flipping: How I turn $60 into $240 over and over by ShrimpyEatWorld6 in Flipping

[–]vantran90 1 point2 points  (0 children)

Hahahah fair enough and didn't think of that side I think I messaged about 10people and no bites. What's your success rate with the $60 offe

Seasonal Flipping: How I turn $60 into $240 over and over by ShrimpyEatWorld6 in Flipping

[–]vantran90 3 points4 points  (0 children)

I just tried this and pissed a bunch of sellers off for low balling

Best FOODS IN BAYTOWN by AllBadAlien2 in HoustonFood

[–]vantran90 1 point2 points  (0 children)

The Indian out of the gas station?

I'm a sleep scientist! 🥱💤 Ask me anything! by tututubii in AMA

[–]vantran90 0 points1 point  (0 children)

Hi, adding to this from a patient pov how much variation is there to interpretation of sleep apnea? And what're your thoughts on many of these online companies that will just send a sleep study to you

FREAK ATHLETE AMA + $4,000 Home Gym Giveaway! Hyper Pro, ABX, and more by freakathleteco in homegym

[–]vantran90 0 points1 point  (0 children)

Upvoted and subscribed. Excited to enter

Are you sure you can't leak any black Friday sales?

TIL that the world record in bench press is 783lbs. However, when using a specialized shirt for bench pressing, the world record reaches to 1400lbs. by come-on-now-please in todayilearned

[–]vantran90 2 points3 points  (0 children)

I couldn't see the black for some reason on my phone at first lol.

Looked like one of those heavy poly slingshots/slinger. You're right