Pipette Pump?
- Thread starter Grimjack
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I've herd that there super accurate but I don't use one myself so don't take my word for it. If you decide to get one do some serious research first
Your arm is going to hurt from using them. The pipettes used with the pumps are like 14 inches long. I bought a whole set last year and quickly realized they were a pain in the .... Attached to a pump, the whole thing is like 21inches long. Imagine holding that above a 10ml bottle without getting the shakes. My advice, stick with syringes ORRRRRR, explore the wonderful world of mixing with a digital scale! No pipettes or syringes to clean up.
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A scale is an option, I've never owned one good enough to register fine enough.
But you are correct a good scale will work just as well as syringe measuring or pipettes.
My experience with a scale was not good, so for me unless I spring for a much better scale I'll do the pipette thing.
I kinda like the whole mad scientist thing anyway, most gram scales make me feel like I should be measuring out some elicit material, and that's not my thing.
Maurice
But you are correct a good scale will work just as well as syringe measuring or pipettes.
My experience with a scale was not good, so for me unless I spring for a much better scale I'll do the pipette thing.
I kinda like the whole mad scientist thing anyway, most gram scales make me feel like I should be measuring out some elicit material, and that's not my thing.
Maurice
A good scale for this hobby is under $20 - 2014 SF 400C 500gx0 01g Digital LCD Kitchen Scale Electronic Compact Scale White | eBay
(There are others...)
Make sure it reads ".01g" NOT ".1g"
I have this one.
I got my scale on amazon.com for $14+shipping. About a big as my wallet. Reads to 0.01 grams.
I will tell U that the mad scientist urge wears off real fast when your arm starts cramping from holding up the pipette pump.
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I will tell U that the mad scientist urge wears off real fast when your arm starts cramping from holding up the pipette pump.
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They do! I got all three different pump sizes with several packs of pipettes to go along with it. The 1ml ones are really very accurate and a pleasure to work with and are also quite capable of pulling up VG. Except with VG you'll have to pump it back out manually because the release lever will not work with VG in there. The other slight drawback is when making small test batches of say 5 or 10ml straight into a small bottle. The pipettes are long! I have fairly steady hands but not *that* steady. I find myself using the other hand to guide the pipette at times. Not so much a problem for larger volumes or if you're not trying to go straight into the narrow openings of the average bottle.
I like the idea of scales but if you are replicating a recipe that uses volume, don't you have to convert to grams using the "specific weight" for each liquid? 1ml of vg for example weighs more than 1ml of pg.
Correct. You'll have to account for the weight of the different types of ingredients. I'm a math wiz and even I don't want to deal with that because of the additional time involved.
I use a pipette pump to measure my eliquid, and I've noticed a problem: the blue ones (the 2ml size) are too quick, too torquey. Does anyone know of a pipette pump that is designed to apply less negative pressure per every roll of the thumb - one that's geared down, so to speak?
Otherwise it's great. Digital scales are also wonderful, but you'll still need to either clean out your dispensing tool between flavors or have one per flavor.
Otherwise it's great. Digital scales are also wonderful, but you'll still need to either clean out your dispensing tool between flavors or have one per flavor.
The same goes for the green one. If I need the precision of being able to do 1/10th or 2/10ths of a ml using the blue/2ml pump with a 1ml pipette I will use the wheel to get close to where I need to be and then instead of using the wheel I just stick my thumb up against the (whatever the part is called that slides out the top) and give it a few very gentle nudges. That works better for that level of precision. But I agree that the blue one especially would be even better if it would take more rotation while taking up less fluid.
Oh, that's a good idea. I might build a gearing converter onto mine, lol. Otherwise I'll just do what you do.
I regret not ordering a few larger pipettes and the green pump for mass VG/PG dispensation. Oh well. That's my next $10 on Amazon, I guess.
I regret not ordering a few larger pipettes and the green pump for mass VG/PG dispensation. Oh well. That's my next $10 on Amazon, I guess.
I had originally bought both green and blue. The blue is called quick release so yes it is very touchy! I use the green one exclusively now while the blue one sits in the drawer. I use 1ml, 2ml, 5ml, and 10ml with it. I will admit though, the 1ml fits a little loose but it does work.
Make sure you get the Serological type not the Mohr type. The Serological is designed for all liquid to be expelled. The Mohr is kinda like those little disposable pipettes, meant to be read between number to number
Make sure you get the Serological type not the Mohr type. The Serological is designed for all liquid to be expelled. The Mohr is kinda like those little disposable pipettes, meant to be read between number to number
I'd like to explore mixing by weight, but I'm far from a math wizard. Just not sure I'm ready to tackle that yet.
I have that scale, I used it to do a feed study on some geckos I keep.
It isn't as consistent across its range as I had hoped even for the feed study I was doing.
Good enough, sure, it just doesn't have the consistency I was wanting.
You can test your scale with calibration weights and a penny; tare the scale the get the penny weight, remove the penny, tare the scale, add a calibration weight and note the weight, add your penny from earlier the added weight should add up.
I tested every 10g and found my penny magically gaining or loosing weight across the scales full range.
Its good to the 1/10g but that 1/100g number is not accurate.
So for me, volumetric measurement is the way to go, I'm not making up a gallon of juice in increments of 10ml so arm fatigue isn't an issue for me.
Maurice
I have those weights. 100 and 200 gram weights. I test my scale every week. Never had a problem in the 6 months I've been using it.
For those of U that are looking for quality pipettes, check out sciencecompany.com
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For those of U that are looking for quality pipettes, check out sciencecompany.com
Sent from my iPhone using Tapatalk
I was using syringes and disposable pippettes, and recently bought the blue pippette pump with a bunch of 2ml and a couple of 1ml pippettes. I love this thing! Yeah, it is long, but I'm able to fine tune things and make very accurate samples, even in the 3-5ml range, and be able to replicate them exactly on a larger scale. Before I was having to make samples in 10ml to be able to get replicable results in larger scale.
A 25 ml mohr pipette and pump are excellent when you want to fill up your VG in your mixing box.
Oh, I didn't know the blue one is meant to be more twitchy than the green one! I'll have to pick up a green pump.
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