Down streaming ratio

tigerwash

New member
I couldn't find much on here when searching, but I am curious about down streaming ratios. For example, my PW down streams at a ratio of 1:7. Does this require a change in the house mix formula at all? Will a regular 5 gallon mix still work fine at this ratio?
 
I couldn't find much on here when searching, but I am curious about down streaming ratios. For example, my PW down streams at a ratio of 1:7. Does this require a change in the house mix formula at all? Will a regular 5 gallon mix still work fine at this ratio?

Someone who Does this Regular will Chime in I'm sure
 
1:7 is 12.5%, which is a weak ratio (in my book here in FL, but may be ok in LA). What equipment are you using and for what jobs (typically)?
 
I'm thinking 1 to 7 is pretty strong for a ds injector. Most are in the 1 to 10 or 1 to 12 ratio or worse if you actually test them. I'm thinking it should be fine for most needs.
 
That's what I'm coming to find out as well. I guess the question now is what should my mix strength change to?

To answer your previous question, I am using an Ex-Cell ZR3600 with Bob from PT's down stream kit. I typically do residential, washing houses and driveways, mainly brick, stucco, some vinyl, and wood. I actually think the strength needed might be comparable for Florida and Louisiana. Houses get really grimey down here.
 
First before you do anything, you need to test your injector to see what the actual ratio is because diameter of hose, length of hose, how many bends or 90's you have in the system, running through a coil, what gpm your gun is rated for, etc.... all factors that will affect your injector ratio.

Once you test the injector with water, then you will know exactly what ratio you are pulling with that setup, changes to the setup like using the other hose, other gun/wand can affect the ratio.

Then you can figure out your other ratios and formulas, never rely on what the manufacturer says or is stamped on the injector as I have never had one that pulls exactly like they say it will.
 
I'm thinking 1 to 7 is pretty strong for a ds injector. Most are in the 1 to 10 or 1 to 12 ratio or worse if you actually test them. I'm thinking it should be fine for most needs.

1:10 = 9% 1:12 = 8% 1:4 = 20% (this is what I use). Is my mix too strong? I don't think so, I haven't killed any plants, but that may be due to me rinsing any vegetation before, during and after as needed and I get great results. Again, there may be a difference in the climates and dirt factors. Mold, mildew and algae are big here. If there were less then I can imagine a lower strength working fine.
 
That's what I'm coming to find out as well. I guess the question now is what should my mix strength change to?

To answer your previous question, I am using an Ex-Cell ZR3600 with Bob from PT's down stream kit. I typically do residential, washing houses and driveways, mainly brick, stucco, some vinyl, and wood. I actually think the strength needed might be comparable for Florida and Louisiana. Houses get really grimey down here.

What Chris said it's right. You can't go by what the mfg says cause there are too many other factors. Regardless all that just start out with 3 gallons of sodium hypochlorite add some surfactant and or detergent of your choice top with water and drop your pickup line from your injector in and go wash something. You'll just have to learn to adjust the strength of the mix in the bucket for the situation. Spray the mix on the siding wait a minute and spray again. Dwell about 10 minutes and rinse.
 
Washed this with a bucket mix 3 gallons of 12.5 sh and 2 gallons of water and downstreamed. Probably less than 1% active sh hitting the siding.
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Washed this with household bleach maybe 3.5 gallons 1.5 gallons water downstreamed.
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You don't always have to nuke it.
 
Once you get a feel for it you'll make adjustments on the fly. I usually go a touch over half SH, I might go a bit more if it's heavy. If you're weak you can add more and go back for a remist.

It seems like every yellow vinyl house I touch has an amazing amount of mold, I always go a touch hot on those.
 
Clear water works fine. Just run your system into a container that you can measure accurately. Run the system until 1 gallon is gone from the bucket, measure total and subtract 1 gallon and you have your ration (??:1).

5%20Gallon%20Pail.jpg


Find one with gallon markings.
 
Five years and I've never really tested mine. But you'll absolutely know when it is drawing good and when it starts to die. Always keep spare injectors they do crap out some times fast and sometimes they last many months. But they are a money maker so it's just part of the expense. You can get good injectors less than $15.
 
I use a gallon measuring pitcher that shows ounces.

I fill up the pitcher so it is at the gallon mark and then with the machine running, put the injector hose into the pitcher and while watching your watch or using a stop watch, pull the gun trigger and timing it for a minute then letting go of the trigger, see how much was pulled out of the pitcher.

Multiply your gpm's times 128 to convert to ounces and then divide what was pulled from the pitcher and then multiply by 100 to see the percentage.
EX. 5.6gpm x 128 ounces = 704
65 ounces pulled by injector
65 divided by 704 x 100 = 9.23% is what the injector pulls

Hope this helps.
 
Washed this with a bucket mix 3 gallons of 12.5 sh and 2 gallons of water and downstreamed. Probably less than 1% active sh hitting the siding.

Washed this with household bleach maybe 3.5 gallons 1.5 gallons water downstreamed.

Can't calculate the actual ratios without knowing the pump GPM or DS %, (claimed or measured) but if your pump is 4GPM and DSer is 20%, your first mix is close to 14% SH hitting the surface and the second is example close to 8.5%. Obviously, these numbers will be different based on the actual equipment used.

Out of 5 gallons total, 1% SH is .05 gal in 4.95 gal of water. What formula are you using to come up with 1%?
 
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