Need Help with mixture

Heber

New member
Hey guys. I need help wrapping my head around a mixture questions. I have been downstreaming with a 5.56 GPM pressure washer from a 5 gallon bucket with a 10:1 downstreamer. I us 2 Gallons of SH 12.5% and 3 gallons of water. I have built a truck mounted skid and I'm am going to be using a 35 Gallon dedicated tank for my chemical. My question is how many gallons of SH do I need to put in the 35 Gallon tank to equal the same mixture I current have downstreaming. The 12 volt pump for the truck mounted skid is a 3.8 GPM. Thanks
 
2:3 ratio (SH:H2O is a 40% mix (2 gallons of SH out of 5 gallons of mix is 40%)). 10% DS'er pulls approximately 10% of your mix into the hose and mixes with 90% water, which would mean that your final ratio is around 4%:96% (SH:H2O). Some guys calculate mixing SH with Water as diluting the SH (i.e. reducing it's active chemical content), which is not accurate. It reduces the ratios thus making the mix less effective.

With that being said, how well does it work for you? I can't imagine your mix having much if any effect on a 100% cotton color shirt, much less anything else.

As to your question regarding the amount of SH & H2O in a 35 gallon mix, it's easy to figure out using your own numbers. there are 7 (5 gallons) in a 35 gallons, so 2 of those gallons will be SH, so 2 * 7 = 14 gallons of SH subtracted from 35 gallons leaves 21 gallons of water (3 * 7). The ratio is the same as in your 5 gallon bucket. Now, here's where the difference comes in. When you use an electric pump, you'll be pulling 100% of the mix (no DS'er) thereby increasing your mix to surface ratio to a true 40% mix. This ratio is probably where you want to start when doing roofs, lower for house and concrete (obviously that depends on how bad its condition).
 
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I use a 20% DS'er which pulls about 20% (measured) of straight SH (10%) into the hose and it works fine. Occasionally I'll have to hit a bad area 2 or 3 times to get it clean.

7:28 ratio is 20% (SH content), so yes it should be fine. This will also depend on what you're cleaning. Might need to adjust accordingly if it's cleaning too fast or slow.
 
Cut or increase based on your needs. If its working... so be it. I personally think its too weak. It wouldn't work here in Florida. if you are happy with your mix.. keep it up.. If you are not convinced your mix is right, in crease your SH or change injectors ( measure your draw first ). Maybe you happy with a weak mix, but might be Happy like Bill Clinton at a frat party with a stringer mix. Mold and dirt on different types of materials/concrete need different mixes.
 
sounds weak but hey if it's the chemical doing the cleaning and you not having to use high pressure, keep doing what you're doing.
Jeff, I used to have a black hat.
I lost it but somehow got an orangeish pinkish one in its place lol!
 
Thats alright......... Friday a week ago... i was finishing up a house.. pump spraying some SH on some mold spots on the walkway.... noticed a mud dauber i didn't like the outcome.... got our the ladder and brush... Stepped of the ladder one step to high.. lost my balance and got my arse wet....... When i got home.......i noticed my tartan boxers had 2 white kidney shape spots on the them..... ( i guess you know where my arse landed )
 
sounds weak but hey if it's the chemical doing the cleaning and you not having to use high pressure, keep doing what you're doing.
Jeff, I used to have a black hat.
I lost it but somehow got an orangeish pinkish one in its place lol!

Had a "civil engineer" tell me "he isnt worried about any high pressure causing any issues on his house, but he was told a few years ago by a big company that he needs to make sure no one puts bleach on his bricks or theyll turn them spongy and ruin them." Tried to educate the customer and gave him a few web references about bleach on exterior surfaces and shingles. He didn't seem phased... Quickly learned he was a customer I didnt want. Must be a REAL strong mix to turn bricks spongy lol.
 
Had a "civil engineer" tell me "he isnt worried about any high pressure causing any issues on his house, but he was told a few years ago by a big company that he needs to make sure no one puts bleach on his bricks or theyll turn them spongy and ruin them." Tried to educate the customer and gave him a few web references about bleach on exterior surfaces and shingles. He didn't seem phased... Quickly learned he was a customer I didnt want. Must be a REAL strong mix to turn bricks spongy lol.

turn bricks spongy.... hmmmm... well in that case, he should be careful using bleach in the washer, toilet, bathtub, etc.
Wouldn't wanna get any on his hand and have it dissolve on him
 
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