Auto Syringes

[The White Rabbit]

Syringes are killing my hand, I'm starting to get a pain when I grip anything tightly with that hand. Is there an auto syringe that's worth buying for ejuice making? I need something with cheaply replaceable parts (I go through at least 4-5 syringes a week) and that can be operated one handed. It'd also need a nose that can fit into a 15mL bottle without a needle (PG and VG are too thick to mess with needles for me).

 

[RocketPuppy]

What about using a gram scale?

 

[The White Rabbit]

I've never understood the advantage to that aside from perhaps more accuracy. For example, say I find the equivalent weight to 1.5ml, I'm still going to need to transfer that liquid to the bottle. I know I can't pour weight accurately by hand, so wouldn't I still end up using a syringe to put the concentrate in the bottle?

 

[Dunder Mifflin]

I kind of want to try one of these Pipette Pump - One Stop DIY Shop Store




edit:code for 11% off at one stop DIY is PB&J

 

[Burn_notice_fan_NY]

I used the Pipette Pumps in school a long time ago and can say that they are easyto use and require little pressure.

 

[bncceo]

I mix directly in the bottle with a scale & disposable pipettes.

I use this scale & I bought these pipettes.

The pipettes are very easy to squeeze, and cheap enough to throw away after using ($0.03 / a piece). I put my 1/2oz. or 1oz. glass bottle on the scale, and use the pipettes to drop flavor until the weight is right (per HotRod's calculator on this forum). It's super easy and fast. I spend more time pulling all of my stuff out of the cabinet and getting set up than I do actually mixing.

Even if you aren't interested in mixing by weight, the pipettes are graduated and you can get them in different sizes.

 

[horton]

What size dispensing needle are you using? A fourteen gauge works well and with little resistance other than VG. You can heat VG in hot tap water to help make it less viscous.
Auto dispensers are very expensive and unless you plan on making gallons of juice they don't seem like a viable option. The pipette dispenser like shown may work, but you will then have to mess with cleaning glass pipettes. Really not any good options other than using plastic pipettes (not very accurate) or syringes (they will work, just have to find ways to get your fluids up with less resistance to flow)

 

[The White Rabbit]

Thanks for advice guys, I'm probably going to try one of those pipette pumps, and perhaps try mixing by weight at some point in the future. Heating the VG will probably make the biggest difference. Oh man, made like 50 bottles last night and the pain has moved up into my forearm...

 

[The White Rabbit]

What size dispensing needle are you using?

I use no needle with VG, a little messier, but far easier to draw with no needle at all.

 

[The White Rabbit]

Question about pipette pumps; do they get sticky like syringes do? After a while a syringe gets harder to draw accurately, I think it's the rubber on the plunger degrading or something. From what I've seen a pump with pipettes shouldn't have this same issue and unless I break a glass pipette, I should have to replace either part (the pump or pipette) very often should I?

Also I'm seeing conflicting advice on what to do with the remaining liquid in a pipette after it's been fully released with the pump. One video says blow it out into the mix, the other says that what is remaining is supposed to be remaining and that I've already released the correct amount at this point and blowing that remnant out into the solution would be inaccurate.

edit:figured this one out on my own, volumetric pipettes shouldn't be blown out, but Mohr pipettes should.

One more question; Are the electronic ones worth investing in? The basic ones don't seem to need calibration, but do they lose accuracy with wear after a while? Just wondering if calibrating an electronic regularly is required.

 

[Burn_notice_fan_NY]

Don't know about electronic ones, but no liquid gets into the actual pump, it draws to whatever the maximum for the device allows and will have space for air and tilting at the top. As long as you do not tilt it upside down, only the actual pipette will need to be cleaned. You could always go a little more high tech and get a pipette rinser https://www.google.com/shopping/product/7551196847702149686?q=pipette+cleaner&client=safari&hl=en&biw=320&bih=529&dpr=2&ei=TqxZU4T6Canu2wX12oCYBw&ved=0CPcBEKkrMAk4PA