sodium hydroxide

Russ Spence

Commercial Pressure Wash Expert and PWI Administra
how much sodium hydroxide can be disolved in 1 gallon of water.
what are you going to clean? The average job does not need more than a pound per gallon, too much more than that is getting dangerous. Unless you are going to reclaim and or neutralize.
 

Big Mike

Member
About a pound for all practical purposes. You can mix in a lot of beads or flakes, but most of it will fall out of suspension and leave a nice "hydroxide cookie" in the bottom of the mixing vessel. A pound in a gallon will strip a deck, or do a really good job degreasing concrete.
 

JohnB

JohnB
I use about a 12 oz cup of caustic per 1 1/2 gallons mixed with Hot Water in a pump up sprayer.. to clean hoods .. Oops did I say hot water again... I meant Really Hot Water.. You know you got the mix just right when the pump up sprayer dances in the sink.. LOL
 

Squirtgun

New member
Is that a down streamed formula Russ???


Yes and we promise it's hot even when DSed.

You can dissolve about 5lbs.This is what I call EXTREME LAVA.It will soften a plastic(5gallon bucket) container enough you can/will push a thumb through it.
Just don't do it the burns are painful and take a very long time to heal.Not to mention it will leave purple scars on your skin.
 

Russ Spence

Commercial Pressure Wash Expert and PWI Administra
I have mixed 55 pounds into approximatly 20 gallons of water before and it was hot for 3 days.

And yes I downstream everything I mix
 

chrishartje

New member
Yes and we promise it's hot even when DSed.

You can dissolve about 5lbs.This is what I call EXTREME LAVA.It will soften a plastic(5gallon bucket) container enough you can/will push a thumb through it.
Just don't do it the burns are painful and take a very long time to heal.Not to mention it will leave purple scars on your skin.

Now thats hot!
 

Tony Shelton

BS Detector, Esquire
I have mixed 55 pounds into approximatly 20 gallons of water before and it was hot for 3 days.

And yes I downstream everything I mix

That will eat a coil alive in 7 minutes. I've tested it. :butcher:

1/4 th of that and you've got a good coil cleaner for around $2.00/ gallon that costs you $25.00 gallon at the supply house.
 

steve rose

New member
What ever you do just use caution.I put my self in the hosp.for 5days with one of my special potions .some of these acids if you have any cuts will go into your system and eat your calcium.dame near lost half my hand.All because i took my safty gloves off .Also i had been working for about 36 hours.not a good time to start playing with the A s
 
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FoxCPM

New member
That will eat a coil alive in 7 minutes. I've tested it. :butcher:

1/4 th of that and you've got a good coil cleaner for around $2.00/ gallon that costs you $25.00 gallon at the supply house.

Wouldn't caustic be too harsh for the coil? I have talked to Rex (PressureWasherProducts) about de-scaling a coil that has been used for years. He made a very good point that coil should be de-scaled little by little starting with lighter acid mix. By stressing it directly with strong mix, there is a big chance to get the coil clogged. Also an old coil most probably has gotten a lot thinner with the years of use which is another factor to consider when using a strong vs light acid to clean it.
Saying all above, I am little concerned about down-streaming caustic on casual basis through the coil in therms of its longevity. From what I have read and researched, the coil seems to be the most expensive part of the pressure washer unit.

P.s. sorry if it was a lil out of topic :blink:
 
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tomtucson

New member
Fox, Tony's talking about an air conditioner coil. Downstreaming would be past your heater coil, caustic is the opposite of what is needed to descale it.
 

Russ Spence

Commercial Pressure Wash Expert and PWI Administra
first of all we dont use that mix, we use about 1 poung per gallon then downstream (when we use it) When we did use it that way it was doing initial clean up on a bunch of diesel truck pumping stations that had not been touched in over 5 years.
 

JohnB

JohnB
I have downstreamed c austic as well but I don't like to ..I would rather use a pump up sprayer , it makes my hose last longer.. Plus when I use to Downstream caustic I would blow out quick connect o-rings big time..
 
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