Injector math please

Math is not my strong suit, if you all could help me out.

I just tested my remote injector setup. With it off the pump puts out 5.5gpm, filling a Home Depot bucket in a minute. I checked with another 5 gallon container with graduation marks and it overflowed with 10 seconds left.

I put exactly one gallon in the container, switched on the remote and it took 5 cups in one minute.

Can someone please do the math?

If my calculations are correct it’s putting out .7% SH at the nozzle. Maybe.

What math? Does it clean siding? If not, less water in the bleach mix.

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I use straight 12.5% in the draw tank. It isn’t always effective, although the hose did flatten toward the end. I’ve since installed polyethylene tubing.

Dont overthink.
SH is cheap.
Just wash

I’m trying to find out what my draw is after the remote injector and 200’ of hose.

Not as well as I’d like.

If the mildew comes off immediately it’s to strong if it takes 5 minutes it’s to weak. 2 minutes it’s just right

I’m guessing it’s too weak then. Typically at least five minutes. My pressure hose may be too long at 200’.

For draw volume…
You already know how long ot takes to fill bucket with no inkector drawing.
Now on a different filled bucket drop your injector hose and fill bucket.
Then with a measured jar fill the bucket.
Now you have your draw

Right, so it drew 5 cups in one minute at 5.5gpm.

Thats a lot.
A bucket usually last my for a whole house

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If my calculations are correct, you have a 15:1 injector and 0.83% hitting the surface.

Just so someone else can correct me if I am wrong

Your bucket test was 5gpm in 60 sec. (128oz x 5 = 640oz)

Injector pulled 5 cups in 60 sec. (5c = 40oz)

Subtract your pulled (40oz) from your total output (640oz) = 600oz
Then divide 600(oz) by 40(oz) = 15
Your injector is 15:1
Now divide 12.5 (%SH) by 15 (injector) = 0.83

I think this is correct

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Thank you sir! I suspected as much.

It’s a GP high draw, usually rated for 10:1 but my 200’ hose cuts that down some.

Here’s my take: 5-7 minutes is perfect because you can soap more house. Smaller houses you can soap two sides at a time sometimes 3. Large houses you can split into 1/3rds. Mist it all on the way back around, start rinsing. If most houses take more than 1.25 hours, the strength might be too strong or you might have too much soap.

Start on the most shaded sides, work toward the sunny side.

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And if you’re using the applewash garbage you’re definitely wasting good time.

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Applewash?

I like apple wash. I like the smell and the marker. I only use it with my 12 volt though. when downstream I use elemonator or cherry snotmenade. what about the apple wash do you not like

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Way too sudsy. All for show. Takes quite a bit longer to rinse than elemonator. I hate apple wash.

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Sh/brown stuff and a fragrance is all you need

What tip are you using to do this test 5 cups is alot unless you got a second story shooter tip it will pull more soap. Do the test with standard black soap tip. But in the end it doesn’t really matter pressure washing will never be a exact science