Author Topic: Post exposure dip tank  (Read 2062 times)

Offline ebscreen

  • !!!
  • Gonzo Member
  • ******
  • Posts: 4278
Post exposure dip tank
« on: June 14, 2016, 03:01:54 PM »
Ours starts stinking a few weeks after changing the water. Instead of wasting water (which is kind of the point of the thing)
is there something we can add to it that is emulsion friendly but bacteria un-friendly?



Offline mimosatexas

  • !!!
  • Gonzo Member
  • ******
  • Posts: 4221
  • contributor
Re: Post exposure dip tank
« Reply #1 on: June 14, 2016, 03:06:46 PM »
little bit of bleach and some kind of a lid should keep it "fresh" for at least 2 months.  That's what I do.

Offline LuckyFlyinROUSH

  • !!!
  • Sr. Member
  • ****
  • Posts: 334
Re: Post exposure dip tank
« Reply #2 on: June 14, 2016, 03:16:21 PM »
Dawn Dish soap. We just keep refilling ours...water is black...but smells like dawn.
I spend too much money on equipment...

Offline alan802

  • !!!
  • Gonzo Member
  • ******
  • Posts: 3535
  • I like to screen print
Re: Post exposure dip tank
« Reply #3 on: June 14, 2016, 03:18:02 PM »
Ours just recently started doing this, just the last 6 weeks or so.  I thought it was the new emulsion we were using, but perhaps not.  What emulsion are you using EB?
I would rather be exposed to the inconveniences attending too much liberty than to those attending too small a degree of it -T.J.
Those who expect to reap the blessings of freedom, must, like men, undergo the fatigues of supporting it -T.P.

Offline JBLUE

  • !!!
  • Gonzo Member
  • ******
  • Posts: 2036
Re: Post exposure dip tank
« Reply #4 on: June 14, 2016, 03:45:33 PM »
Little bit of Simple Green every so often keeps ours nice. You should see all the cool stuff it kills on the label.
www.inkwerksspd.com

We are all born ignorant, but one must work hard to remain stupid...... Ben Franklin

Offline jvanick

  • !!!
  • Gonzo Member
  • ******
  • Posts: 2477
Re: Post exposure dip tank
« Reply #5 on: June 14, 2016, 03:52:23 PM »
ours stinks after a month or so as well.. just as easy to change it out rather than risk changing the chemistry of the emulsion.

Offline kingscreen

  • Gonzo Member
  • ******
  • Posts: 1161
Re: Post exposure dip tank
« Reply #6 on: June 14, 2016, 04:23:07 PM »
Simple Green here too. 
Scott Garnett
King Screen

Offline ebscreen

  • !!!
  • Gonzo Member
  • ******
  • Posts: 4278
Re: Post exposure dip tank
« Reply #7 on: June 14, 2016, 04:34:45 PM »
Ours just recently started doing this, just the last 6 weeks or so.  I thought it was the new emulsion we were using, but perhaps not.  What emulsion are you using EB?

SP-1400

ours stinks after a month or so as well.. just as easy to change it out rather than risk changing the chemistry of the emulsion.


Clearly you don't live in California.



Thanks everyone. I've heard of people using bleach to reclaim screens so I'm going to shy away from that, dilute
as it may be.

Dawn or SG, whichever I find first...



Offline mk162

  • Ludicrous Speed Member
  • *******
  • Posts: 7859
Re: Post exposure dip tank
« Reply #8 on: June 14, 2016, 04:49:23 PM »
yup dawn here.  works great.  our dip tank is around 75 gallons or so and I use around a tablespoon.

Offline Frog

  • Administrator
  • Ludicrous Speed Member
  • *****
  • Posts: 13980
  • Docendo discimus
Re: Post exposure dip tank
« Reply #9 on: June 14, 2016, 05:06:46 PM »
Does anyone use a pump and keep the water moving?
That rug really tied the room together, did it not?

Offline Maxie

  • !!!
  • Gonzo Member
  • ******
  • Posts: 1328
Re: Post exposure dip tank
« Reply #10 on: June 14, 2016, 05:16:09 PM »
At the moment we have no water shortage and I refill it once a week.
I've thought of getting a air pump like in a fish tank, I think the oxygen will keep it going longer.
I really need to try this, with everything else we try to be environmentally friendly.
Maxie Garb.
T Max Designs.
Silk Screen Printers
www.tmax.co.il

Offline im_mcguire

  • !!!
  • Hero Member
  • *****
  • Posts: 716
Re: Post exposure dip tank
« Reply #11 on: June 14, 2016, 05:31:29 PM »
Anybody have a source on a plastic container that would hold a 23x31 screen? I don't want to buy another dip tank from enviroline.

Online Evo

  • Hero Member
  • *****
  • Posts: 953
  • Anything is possible.
Re: Post exposure dip tank
« Reply #12 on: June 14, 2016, 06:07:48 PM »
Ours starts stinking a few weeks after changing the water. Instead of wasting water (which is kind of the point of the thing)
is there something we can add to it that is emulsion friendly but bacteria un-friendly?

Does it smell like a disposable diaper sometimes? Ours does.

We clean and disinfect the tank with ammonia or bleach when we change the water. That helps to keep the stench at bay for awhile. I'll add a little ammonia to it every once in awhile and that seems to help as well. Once the stink starts, it ramps up quick so we just change it out.
There is scarcely anything in the world that some man cannot make a little worse, and sell a little more cheaply. The person who buys on price alone is this man's lawful prey.
John Ruskin (1819 - 1900)

Offline Dottonedan

  • Administrator
  • Ludicrous Speed Member
  • *****
  • Posts: 5907
  • Email me at art@designsbydottone.com
Re: Post exposure dip tank
« Reply #13 on: June 14, 2016, 06:51:44 PM »
Not sure how much it helps the smell of old, dirty water, but I have a few customers that have pretty high pressure air pumping in from the bottom that agitates the water to help break down the ink on the screens faster. Probably intended to also smell better. Couple tablets of clorine and some gold fish sounds fun.
Artist & high end separator, Owner of The Vinyl Hub, Owner of Dot-Tone-Designs, Past M&R Digital tech installer for I-Image machines. Over 35 yrs in the apparel industry. e-mail art@designsbydottone.com

Offline jsheridan

  • !!!
  • Gonzo Member
  • ******
  • Posts: 2130
Re: Post exposure dip tank
« Reply #14 on: June 14, 2016, 08:45:10 PM »
ours stinks after a month or so as well.. just as easy to change it out rather than risk changing the chemistry of the emulsion.

A little dirty water isn't going to alter the chemistry of an exposed screen.

Blacktop Graphics Screenprinting and Consulting Services