Johnny50

I've got an HD lance alreay so would be great to know the ratio.

cheezemonkhai

It's supposed to be fine in the HD lance from the reviews on DW.

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Tom_vRS

The ratio will depend on your pressure washer, water pressure etc etc.

To work out your concentration, what I did was:

1. Time how many seconds it takes to get to a set quantity of water.
2. Then time how long it takes to use a set amount of fluid from the lance resevoir. I did this by measuring 200ml in there, marking the location of 200ml on the botte, and then adding another 200ml to make a total of 400ml. Run the lance and when the level drops to the mark you know how many seconds it takes to use 200ml from the lance.
3. You can then use these figures to work out the concentration of the lance resevoir:water.
4. Then you can work out by what quantity of detergent you need to give the required %.

For example:

1. Say you have 3l flowed in 1 minute, thats 3000ml/minute.
2. The lance resevoir empties by 200ml in 130s. 200/130*60 = 92ml/minute
3. Therefore the ratio if you used the detergent neat is 3000/92 = 32.6:1. So for every 32.6ml of water that flows, 1ml is detergent.
4. So if you wanted a 1% concentration (thats a ratio of 100:1), you would need to use 32.6/100=0.326% detergent in the resevoir. So thats 326ml topped up to 1l with water.

Crystal clear I'm sure!!!

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gillywibble

All very technical. I just put about an inch in

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cheezemonkhai

Good news, in a HD foam lance, the BH autofoam works a treat with about 1" in a 1L bottle

Lots of silly foam that dwelled for the 5 minutes and I used about 1/3rd of the bottle to do the octy.

Add to that the car has come out really clean for a touchless wash and I'll definitely recommend it. In the end the problem seems to be that the karcher foam bottle was over diluting it and so it just couldn't foam up enough.

All good now and I'll bring you a small jam jar of the stuff to try at the handling day.

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Cars make CO2 and trees absorb CO2. By driving your car you're feeding a tree and helping the environment.

Johnny50

Thats good to know.
I'm also using an HD lance.

Just to clarify you're using BH foam ?

cheezemonkhai

Yes I have a 5L bottle which is full of green stuff that kind of smells of apples when applied and I'm using it in the HD lance

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Johnny50

Superb.

End of month purchase coming up for me.