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Spas' tobacco extract
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Don Offline
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Post: #1
Spas' tobacco extract
Took me ages and ages to figure out what this tasted of. I knew I ought to recognise the taste, but just didn't. Till it dawned on me a few minutes ago, it tastes like I remember a tobacconist's shop in Harare smelt like - it tastes like unburned tobacco smells. Very, very nice.

I think I'll be trying this for myself. But maybe I'll try to let the leaves ferment as they are in smoking tobacco production before I dry them and try extraction.

Thanks Spas for a taste of this - it is very nice indeed.

Time to speak to some lab glassware suppliers, a Buchner flask and funnel with a water jet vacuum pump will make the filtration very much easier. Unless Gords has some spare vacuum pumps knocking around Smile Not that I need or want hard vacuum. That sort of pressure glassware is frighteningly expensive.

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07-02-2014 06:41 PM
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Spasmod Offline
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Post: #2
RE: Spas' tobacco extract
I'm glad you like it Don! nothing special there and none of the super rich flavours of the bought tobacco juice but definitely an honest tobacco taste.

I have a mate near me who won't vape anything else now and he gets me to make this for him regularly Smile

If you find out any easily conceivable techniques without spending big money on kit, please do let us know and I'll definitely give it a try Tongue

Cheers for the feedback Don Good2
07-02-2014 07:05 PM
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Don Offline
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RE: Spas' tobacco extract
The kit I'm looking at would be less than £40 all in. Pyrex beakers are £3-5 depending on size. The cheapest Buchner funnel and flask I could find was around £15, the vacuum pump around £18. I'm used to working with this stuff. AeroPress filter papers (Which are pretty fine) are about a fiver for 300 and ought to be about the right size.

This one would be about right for 100-150ml batches. A bit of rubber tubing and a source of vacuum and you're set. The only ebay source I could find for a water jet pump wanted 20 quid for postage. For a device worth fifteen tops! 

These devices will not take hard vacuum and it would be dangerous to attach a really powerful vacuum pump to them. Glass implosion can be impressive - I've seen it done when an eejit attached a filter flask to a hard vacuum line. Then clogged the filter!

You can get little hand cranked vacuum pumps, but I've never used one so have no idea how good they are. At a pinch you could use a bike pump modified to suck instead of blow.

A mortar and pestle is traditional for grinding stuff up for extraction - any kitchen shop will sell a cheapie that can be dedicated to the job. Jade ones are the best but are frighteningly expensive. These work better than coffee grinders and are usually cheaper. 

Basically you're preparing, grinding, extracting, filtering and diluting. The extraction and filtration stages can be the most troublesome. Me, I'd want a Soxhlet extractor which is a sort of fancy still and 'kin expensive. Especially as you'll need an appropriately sized boiling flask and a condenser as well (PG boils at 188 Centigrade). There's be no change from a couple of hundred for that.

Your current extraction technique seems to work just fine so that's not a problem.

Which leaves filtering. At least that kit is affordable.

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07-02-2014 07:30 PM
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Spasmod Offline
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Post: #4
RE: Spas' tobacco extract
Bloody hell Don you've gone all Chemist on me Tongue

Sounds good though.. let me know when you're all set up and I'll ship my leaves to ya Big Grin
07-02-2014 08:37 PM
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Don Offline
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Post: #5
RE: Spas' tobacco extract
Well I do have a degree that says I used to be one. Smile

Mildly alarmingly, one day around 1992 (I graduated in 1982) I had to escort a high-risk (of suicide) patient to sit his exams at the local university. One of them was Chemistry 1. It had changed a bit in the previous decade as there was exactly one question on the paper i could have answered correctly. It began (And ended) Name:

It didn't have the one that every University of Edinburgh paper began with - Registration Number. Which was 7811631. Every dealing with Edinburgh required that number. First thing i did at Aberdeen was to memorise that number 860110998, which I never had to use again.



I'll need to get a supply of PG and VG first. Got enough disposable containers to handle that bit.

Grinding/extraction isn't a problem - container on top of the boiler for as long as it takes. Need to get some Parafilm to stick on jam jars till I get beakers. Needless to say the jam jars will be single use.

Filtration - well you've seen the shopping list. Failing that, I have an old drip filter coffee machine that doesn't work. The jug and filter cone still work. The rest of it can meet a bin near me. 

That and a long wait will do the job. And coffee filters don't cost much.

Bottles, I probably have enough and can get plenty more cheaply - like 70p for a 100ml bottle with pipette cap. Those bottles are nice and don't cost much either.

Bring 'em on. Tongue

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07-02-2014 08:49 PM
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gords1001 Offline
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Post: #6
RE: Spas' tobacco extract
I'm guessing 100" vacuum would be too severe? My vac pumps are meant for pulling a hard vacuum in systems that carry up to 40kg of refrigerant........they'd probably pull your beakers through the tubes, if they didn't suck the tubes shut first......Laugh3
07-02-2014 09:50 PM
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Don Offline
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Post: #7
RE: Spas' tobacco extract
That's what I thought. Refrigeration needs hard vacuum. What I do doesn't.

10kPa is hard vacuum when it comes to filtration

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07-02-2014 10:17 PM
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gords1001 Offline
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Post: #8
RE: Spas' tobacco extract
Just pulse the on off switch and they do more than that lol

We need to pull a vacuum in the system low enough for water vapour to boil off at room temperature..... I know my vac pump can suck 25mm hoses shut if they have a tight radius in them
(This post was last modified: 07-02-2014 10:41 PM by gords1001.)
07-02-2014 10:39 PM
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