if you wanted to make the syringe fill up automatically, how could you achieve that? in other words, i want to be able to leave one of these and let it go for hours and hours, and it may run out of liquid. i'm wondering if there would be an easy way to have it be refilled.
Nooo, not that kind of funnel. Syringes are used loads in chemistry with septum seals (rubber discs) in the ports instead of stoppers, to transfer pyrophorics and other atmospherically sensitive things that'll oxidize, hydrate or spontaneously burst into flames. Then the cannula (a half foot long, thick gauge blade) gets jabbed through the septum and the syringe contents is either manually squirted in or they use syringe drivers to do that when it needs a controlled rate; very precise / critical
@lexichronicle2 I have used pyrophorics like EtMgBr, nBuLi, and LDA before several times, and they aren't even that lively (tBuLi on the other hand...).
this is excellent stuff, I've been searching around and looking at drivers for a while; to use the syringes as microaddition funnels where I can get a drop or less per second without playing with the tap for ten minutes, then coming back to find it's stopped. I've also just done some measurements on syringes and had a thought that I think you will like. I'll post a video up in a bit and give you a shout
@lexichronicle2 The problem with using it as simply a funnel with a tap is that the surface tension of a drop provides backpressure, which is overcome by the force of gravity and the pressure head above it. Unfortunately when the liquid level gets too low, the force of gravity can't overcome it, and it gets stuck.
If I had plans for world domination, I would attach it to a tachikoma (that I would have to build first).
Its really for DIY microfluidics research, and I've built it with the goal of 'hardware store parts' mostly, and surprisingly I can get a theoretical 1.805uL step size....
Why do i have a horrible mental image of you strapping this to the top of a Hexapod robot and filling with cobra venom, thus taking over the world with your hordes of pets?
if you wanted to make the syringe fill up automatically, how could you achieve that? in other words, i want to be able to leave one of these and let it go for hours and hours, and it may run out of liquid. i'm wondering if there would be an easy way to have it be refilled.
joshmusicbox 1 year ago
Nooo, not that kind of funnel. Syringes are used loads in chemistry with septum seals (rubber discs) in the ports instead of stoppers, to transfer pyrophorics and other atmospherically sensitive things that'll oxidize, hydrate or spontaneously burst into flames. Then the cannula (a half foot long, thick gauge blade) gets jabbed through the septum and the syringe contents is either manually squirted in or they use syringe drivers to do that when it needs a controlled rate; very precise / critical
lexichronicle2 1 year ago
@lexichronicle2 I have used pyrophorics like EtMgBr, nBuLi, and LDA before several times, and they aren't even that lively (tBuLi on the other hand...).
aonomus 1 year ago
this is excellent stuff, I've been searching around and looking at drivers for a while; to use the syringes as microaddition funnels where I can get a drop or less per second without playing with the tap for ten minutes, then coming back to find it's stopped. I've also just done some measurements on syringes and had a thought that I think you will like. I'll post a video up in a bit and give you a shout
lexichronicle2 1 year ago
@lexichronicle2 The problem with using it as simply a funnel with a tap is that the surface tension of a drop provides backpressure, which is overcome by the force of gravity and the pressure head above it. Unfortunately when the liquid level gets too low, the force of gravity can't overcome it, and it gets stuck.
aonomus 1 year ago
If I had plans for world domination, I would attach it to a tachikoma (that I would have to build first).
Its really for DIY microfluidics research, and I've built it with the goal of 'hardware store parts' mostly, and surprisingly I can get a theoretical 1.805uL step size....
aonomus 2 years ago
Why do i have a horrible mental image of you strapping this to the top of a Hexapod robot and filling with cobra venom, thus taking over the world with your hordes of pets?
Anyway, looking good so far
MrHeadcrab 2 years ago