Coffee Filters

[stuey]

Can anyone explain the different grades of them. I'm not interested in making coffee. I want to reuse a cleaning solution that I use to clean various metal parts, and the solution will contain particles of dirt, metal filings, etc. What grade should I use?

[stuey]

I should add that it will also contain oil and grease, so I want to filter these out.

[Old_Geezer]

Hmmm ... I suspect you need to use something built for the job. Separating water from coffee grounds sounds a lot less clogging than holding back grease.

Your cup of java will taste awful too.

[Retrochic]

Its pointless asking as question about coffee filter grades in the UK stuey -from what I can see over here you just get size 2 and size 4. I would use Muslin -you can get it from hardware stores pretty cheap -or get a 'jelly bag' that is used to strain fruit to make jams and jellies. I use muslin to strain my 'concoctions' of herbs its cheap and you can just throw away the muslin with the bits in.

[wired]

Coffee filters aren't much use for anything other that water, you could try a j cloth.

[gingejbee]

Particulates will settle out if left undisturbed. For anything else that's left, I would use a coarse grade qualitative filter paper, available from lab suppliers.

[graeme74]

try tights

[stuey]

The solution is concentrated Simple Green and it is waster based. I guess I'll try muslin or cheese cloth. Or perhaps, don't be so cheap and buy some more when I've used it all up:) Thanks for your replies.

[stuey]

Actually, graeme74, your suggestion of tights sounds good. I imagine that is what we call panty-hose over here?

[Old_Geezer]

Very likely, depending on what 'over here' is :-)

[stuey]

Canada: the frozen white north...Well, for the past few weeks it has been:)

[stuey]

Well, silly ol' me! I just found out the the grade refers to the physical size of the filter and NOT the porosity...Learn something every day:)

[gingejbee]

Actually, stuey, the grade refers to the pore size (and therefore retention) of the filter paper...not the diameter of the disc:

http://www.prlabs.co.uk/news/downloads/wPjkKWhatman%20filter%20paper%20guide.pdf

[stuey]

Hi, gingejbee. Oh yes, I remember Whatman filter papers from when I used to work in a hospital lab eons ago...The name brings back many memories. However, when It comes to the plain old coffee filter, the numbers 2 to maybe 6 refer to their size and not their filtration ability. I'll see if I can find the site I was on. The reason I'm considering filtering this Simple Green is that it's not that cheap. It's around $20 for 4 L, which is about 10.56GBP...Perhaps I'm being too cheap:)

[stuey]

See the third illustration on the top line: https://images.search.yahoo.com/yhs/search;_ylt=A0LEVjRXTNpUJ90ANOcnnIlQ;_ylu=X3oDMTB0ZjNuMHJ1BHNlYwNzYwRjb2xvA2JmMQR2dGlkA1lIUzAwM18x?_adv_prop=image&;fr=yhs-mozilla-001&va=paper+coffee+filter+sizes&;hspart=mozilla&hsimp=yhs-001

[gingejbee]

Stuey...must admit I'd never heard of Simple Green....but I see it's an all-purpose cleaner. When you use it, is it diluted (and therefore "thin")...or is it still "thick" ie viscous? If the latter, I suspect it won't pass through filter paper and you'd be better off with some fine material. I'd be interested in what you decide upon eventually and what the results are!

[gingejbee]

Have just looked at the link...I would have called #1, number 1 size etc not grade 1.

[stuey]

In it's concentrated form it is not syrupy like an acid but has the consistency of water. For ordinary house hold use, you can dilute it up 1:10 depending upon the purpose. It does come with instructions, and they do sell it in the UK. I use it in concentrated to clean disassembled clock movements, and it is excellent. Of course I then have to rinse it off in water, and then soak the parts in methyl hydrate to get rid of the water.

[Retrochic]

stuey for the sake of marital harmony please don't use panty hose to filter your bits.....

[stuey]

I get the hang of what you're saying Retro:)