[CLEANCARE WC]

So Clear clean you came on here last year and your already know it all.One GSSE does allow a opinion.Go on then you tell us why so many get spotting.Lets have a dose of your crap.I await with bated breath.The floor is yours.

Ok heres my answer,  I have  been using the forum for over 2 years , but I have been window cleaning 11 yrs and wfp 6 yrs. so theres your 1st mistake or is it 2nd?

How long have you been window cleaning WIZKID?

I wont try a scientific retort because I only have 1 gcse, or do I?

Ok go on then I will have a try...There is a critical level you can use nearly pure water I dont know exactly what it is perhaps you could tell us you seem to know everything else! anyway what i was saying is if your water doesnt leave spotting when its cool it wont do when the conditions are warmer.

Over to you Hawkins

And btw it would appear I have been registered on the forum longer than you, (not that it matters) I say appear because I suspect you are one of the old guard judging by your know it all posts at every oppertunity?

[wfp master]

Have any of you been getting problems with spotting in this warmer weather

Strangely this only occurs on windows that are being cleaned in direct sunlight. Windows in the shade are not spotting.

Have checked the TDS of production system output which never seems to change from the usual 25ppm. Swapped vehicles to see if it was a problem unique to one van with no obvious change. Even spending slightly longer rinsing doesn't seem to improve things.

If I can't find an alternative cause, the only thing left to try is a new set of 4040 membranes 

Any ideas ?

25 ppm might have something to do with it. its pure water  you need to use.

[dazmond]

itll be the high tds mate.i dont let my water go above 10 without changing my resin.its currently 03 with no spotting or problems whatsoever!!

bite the bullet and stop trying to be a cheapskate and polish your water off down to 000.ill be changing my resin over the easter break ready for aprils onslaught of work.

surely your making a good wedge with the amount of water your using!!


best wishes


dazmond

[jouk45]

Thanks for your help Wizkid, in theory I completely agree with what you're saying, but it doesn't explain why we've never had this problem before!! Think i'm going to have to bite the bullet and go back to DI resin  

Must remember to ask the mrs if she'd like some meniscus later!!! lmao

you said you may have to go back to di??? so if you have soft water, where did you go wrong, did you go ro or somthing, what is your water tds now

[Shiners Express Ltd.]

Well, as I understand it . . . . my water at 25ppm was just enough to dry properly during normal UK weather conditions ie. -2 to +10degrees, however, as we are experiencing much hotter conditions +15 to +23 degrees with direct sunlight, my meniscus can't disperse quick enough to dry properly    

This theory has been confirmed in practice today, so big thanks to Window Washers and Wizkid 

[jouk45]

is your water before filtration 25ppm

[Roy Cauldery]

tds at 25ppm-surely this is not 'pure water'
We live in a very hard water area, and if it even looks at going over 3 , we will get spotting(we have had this)
To that end, we soften the water,3 stage filter, r/o, final polish with resin and no problems.The BIG diference has been the addition of the softner
  

[Shiners Express Ltd.]

50/50 split for waste to produce. Coming out of tap at 450ppm.

[jouk45]

450ppm blimey that's worse lol and you thought of going back to di, ro is what you should be using

[bad trippy]

Got to say, i have noticed spotting in this hot snap  
Think im gonna rinse a bit more on hot days from now on, see if that sorts it out

[Shiners Express Ltd.]

jouk45, don't think you've read the thread have you?!

[jouk45]

yes i did, sorry just trying to help. think this confused me,
Think i'm going to have to bite the bullet and go back to DI resin

[Shiners Express Ltd.]

jouk45, I sincerely appreciate your trying to help, please don't misunderstand me. 

We currently use RO and used to use DI in addition, but on one occasion many moons ago, realized we had been using spent resin for the previous 3 months!! did my test windows (home) to check results and hey presto, all fine, so decided to stop using resin as it is very expensive. However, due to the current situation, I have been convinced to start using resin again.

[jouk45]

jouk45, I sincerely appreciate your trying to help, please don't misunderstand me.  

We currently use RO and used to use DI in addition, but on one occasion many moons ago, realized we had been using spent resin for the previous 3 months!! did my test windows (home) to check results and hey presto, all fine, so decided to stop using resin as it is very expensive. However, due to the current situation, I have been convinced to start using resin again.

ahh i see, so why is it now you can use resin again as it was so expensive before  i now use tulsion resin, best their is  just a tip, maybe you can double up your resin vessels, that may also cut down on your resin expense

[Shiners Express Ltd.]

lol there's a line between paying for expensive resin . . .or. . . loosing customers!!

Doubling up on resin bottles will make no difference at all. While the vessels will last twice as long, they'll cost twice as much to fill!

[richard jagger]

Clear clean I have not spoken about a critical point you have so do not quite understand what you on about.
We are discussing a fellow shiner`s  tds at 25 and spotting so please read this thread properly.
I have been  a member of this forum since 2005 under a different name as we all used a few names and  we were asked to only use one name I at the time. As with many lost the names we used and registered a new name.If I understand you right the critical point is 10 tds the is a finishing point but I believe as I said its my theory that the higher the tds is that pure want to return to its natural TDS and I said I would run by a friend  who has a PHD and work as a industrial chemist.If there was not truth in theory then pure water would not absorb any thing on the glass. .In my previous work career  I was directors of a chemical manufacturing Business Call Sun Glitzs USA and doing this job gave me a fair understanding of chemistry I am semi retired and am a senior man so I have been around a some time. I also hold a B.Com degree from the university of Stellenbosh South Africa. I enjoy shearing what I know with my fellow window cleaner.
And just for the record you told me told me I was talking crap, saying no offence does not excuse your insults. I have not asked to crit my threads so in future don`t read anything I might write.As I can see you don`t want to be  helped in anyway and do not want to discuss anything. Seems the chip is heavy..But if you insult me I will give as good as I get.

[CLEANCARE WC]

You could be getting some residual on the glass due to pollution in your area. Remember pure will not de-solve all pollution deposits on the glass after all is only water.The most difficult one is from cement which need to be burned off with acid or buffet of with a compound.From what I understand pure made from high tds water should clean better than low TDS as it has the nature need to return to what it was when it was high tds water.This pure I believe is more able to de solve more deposits and this is why some folk have this problem and some don`t. If my theory is correct, it would explain it all.I will run this by some who know more than me.By the way is your TDS high or low?
Smear this was for you.
I also believe you spotting is always there but is only visual in sun light.

we all know pure wants to go back to impure, but what you have said above is utter rubbish! how does the water know how impure it was? if we have 2 seperate litres of pure they will absorb at the same rate regardless of what ppm they were brought down from.

I have no chip and Im greatful of peoples help and knowledge. I just dont like people who think they are above everyone else, whose posts are always flavoured with Narcicism and you seem to be one of them.

Your name says it all= Ego.

[ian1965]

450 tds out of tap? Has your tds meter been calibrated?

[Perfect Windows]

lol there's a line between paying for expensive resin . . .or. . . loosing customers!!

Doubling up on resin bottles will make no difference at all. While the vessels will last twice as long, they'll cost twice as much to fill!

Shiners,

Not if you use them correctly.

Fill vessels one and two and run the water through in series.

Once output TDS gets above zero, replace the resin in vessel one.  Move vessel two into position one and put the vessel full of fresh resin in position two.  That way you get the absolute maximum usage you can possibly get out of all of your resin.  You're not throwing away resin that can get you to TDS of, say 002, you're now using it to preserve your new resin.  (Hope that makes sense)

Note that if you do this, you will not save a single penny in the future by letting the TDS get above zero, so you might as well replace it on the day it hits 001; you've made the saving already by going to two vessels.  I repeat, replace it on the day it goes to 001.

Vin

[bad trippy]

450 tds out of tap? Has your tds meter been calibrated?

mines about 450ppm out the tap here in Bristol, comes out the RO at about 13ppm