[ned]

Sorry Doug lkelly718@btinternet.com

[macmac]

macmac

I am here, what are you on about ?

One persons experiment, so that is the conclusion !!!!!

One has an higher tds input from a merlin, so not a true comparison.

Yeah, of 002ppm, time to wise up dave

Tony

[Moderator David@stives]

Still not conclusive ,the feed tds is 40 % lower on one system.

Also it doesnt state the size of the di vessils.

Until we have more info , thejury is still out.

I know of a good simple experiment a supplier etc could do for us.

Buy 1/2 a litre of each type of resin, leave the tap running and see how many ltrs of pure each type of resin produces.

[macmac]

Still not conclusive ,the feed tds is 40 % lower on one system.

Also it doesnt state the size of the di vessils.

Until we have more info , thejury is still out.

I know of a good simple experiment a supplier etc could do for us.

Buy 1/2 a litre of each type of resin, leave the tap running and see how many ltrs of pure each type of resin produces.

Never trust a supplier mate, if you put your di's in your vans instead of pumping mains pressure through them, changed to dowex you'd see the light. why not? just on one van, you've nowt to lose apart from some face when you come back to tell me how good i am

Tony

[Moderator David@stives]

Tony

Apart from anything i am more conserned with maximising my earnings rather than cost cutting at the moment.

Like i said earlier, no proof, I have tried every make of resin and not noticed any significant difference

I will never put di vessils in the van ever again, i keep things simple at work, tank, pump , pole nothing else.

[macmac]

Tony

Apart from anything i am more conserned with maximising my earnings rather than cost cutting at the moment.

Like i said earlier, no proof, I have tried every make of resin and not noticed any significant difference

I will never put di vessils in the van ever again, i keep things simple at work, tank, pump , pole nothing else.

Then you can't be helped my friend, 2 di's in a van to half your resin costs, can't see a problem. I think even if i gave you proof you still wouldn't change your mind, it's seemed made up from the start.

Tony

[DASERVICES]

Sorry Doug lkelly718@btinternet.com

Third time lucky I hope 

Cheers

Doug

[DASERVICES]

Still not conclusive ,the feed tds is 40 % lower on one system.

Also it doesnt state the size of the di vessils.

Until we have more info , thejury is still out.

I know of a good simple experiment a supplier etc could do for us.

Buy 1/2 a litre of each type of resin, leave the tap running and see how many ltrs of pure each type of resin produces.

Dave that would not work have tried it, volume vs flow rate. I would say 11l then you would find the result.

Your supplier should know that as well

[Moderator David@stives]

Tony

I dont know what your on about really, obviously your view is correct even though there is no proof. your the one who needs help not me.

Doug

Why wont it work, is this not what everyone is trying to tell me, you cant have it both ways, if it lasts longer,then it last longer regardless of how you conduct the test.

Why not use a bigger volume and a slower flow rate ?

So you are telling us an experiment will only work over the course of say a few months ?

[Moderator David@stives]

p.s if you tried it , what were the results ?

[DASERVICES]

Dave,

Before I bought a pallet of Tulsion I asked the supplier to send me a sample which they did, I then bought a 750ml di vessel from Gardiners. That came with a R/O flow which they kindly changed FOC to tap flow.

When I put the resin in and turned the tap on the tds came out at around 010ppm, I then slowed the flow rate down at a trickle and it came out at 000ppm. The 750ml di vessel is only suitable for RO flow rate hence volume vs flow rate.

The next di vessel is the 1l which is also designed for slow flow which is RO.

For tap pressure turned down I would say min you would have to have is around 10l which would hopefully give you a full reading. This would produce from 1600l to 4800l on your TDS reading with each brand.

Out of interest how many litres do you produce from a bag of 25l , don't need to be exact.

[alanwilson]

Just to clarify

2x19ltr di vessels at both RO's

I realise the output tds of the merlin is 40% higher than that of the 4040 but look at the figures, the dowex has lasted approx 3x that of purolite. 

The costs are minimal - and results have been calculated per litre of resin x 25 to calculate for a bag.

All I'm saying is that resins differ in quality vastly.  Anyone wishing to experiment with their own water samples then feel free to do so, as the chemical composition of resins are different to one another one resin may work better up here while down in the south east a different resin may outperform dowex.

For us the costs are minimal, having to replace a bag of resin every 20k ltrs ain't a problem, never mind 10x that!  especially as for most of us 2ltrs=£1 earned or thereabouts.

Dave Morris - honestly mate, twin di in each van would still be very simple, save lots and lots of resin and guarantee quality water.  If you are interested in maximising profits then you have to consider lowering expenditure.  A penny saved is a penny earned.

DA - do you drive a white berlingo?  I was talking to a guy months ago in a white berlingo, think he was called doug or dougie or something, at the airport (I was waiting to pick up a friend).  Was that you?  Moustachio!!

[Moderator David@stives]

Doug

I have no idea , roughly a month, wcw have records of how much resin i use.

i rotate 3 vessils, a fresh refil in an 18 ltre vessil, normally goes through 1 vessil at say 50 tds then a second one at 1 tds fist, the 50 and the 1 slowly creeping upover the month, i usually discard the 50 when it reches 100, by this time the 1 tds has reached about 30, the 0 staying 0 for about a week or 2.

When the 0 reaches 1 i fill the one thats reached 100 with fresh and that goes at the front again to start the cycle all over again.

[DASERVICES]

Alan,

Not me , do have a Moustachio!!  

Do you know a J Cairns and M Reid up your way. If not then there is another Wilson in the area.

If so then Martin will tell you about me.

Doug

[Moderator David@stives]

alan wilson where are you based.

I will not go back to di in the van, lost too much money with air locks, hoses popping off wasting tank loads of water. If a van is off the road because of an air lock atc then thats about £50 an hour lost until it gets fixed, not to mention the wages still to be paid in this time.

I must say it takes 1 hour to fill a van through the tap so that is 6 litres a min, which is only 3 times faster than a van pumping out 2 litres a min, so mine going through 3 di vessils is comparable to that.

[alanwilson]

can't say I know them!  must have been someone else I was talking to.

just got talking to him, asked him what he did and he said 'window cleaner' - 'snap'!!

the only other cleaners round here I have seen about are ATC, mind you a lot of our work is insides so wouldn't bump into that many.

dave morris, Braehead.  If you set the thing up right, hardpipe the di vessels, then they'll never blow off.  Do it your own way but I'm just saying you could be saving money instead of having to bring in more work to pay for it. 

[Moderator David@stives]

There is such a fine line between money saved and simplicity and less hassle, say a van brings in £400 for the day , then £3.00 saved in resin seems immaterial. if there is any saving to be made at all.

Time is money and time spent messing about with di in the van is a no brainer, ask anyone who has di in the van how long they take each month tending to ther vessils, most people i know have hassle. ie flow rate fluctuating , pressure build up, air locks , leaks, with so many connections more chance of pop offs.

The trouble with hard pipe is the time involved undoing everything when its time for a resin change.

DI out is the only way for me

[DASERVICES]

Dave,

I hope they are giving you a good deal on their normal price of £69 + vat + delivery. Ouch!!!

This is the honest truth, I have 15 customers here in Scotland who have always used Purolite. A couple of big firms and they have all ordered again. If the product was not that good then they would not.

I have to confess Lee's statement has thrown me back which I need to look into.

8 customers with 2 man outfits per van went through a bag a month using Purolite as Alan W has shown . They are now ordering from me every 2.5 - 3 months.

Another fact is Purolite is suitable for Tropical fish, Tulsion is not as it is a stronger resin hence why I cannot advertise it for tropical fish as well otherwise there would be dead fish.

Window cleaning is a small percentage of the market so far and suppliers like Purolite will not change their product to suit us as other consumers use the product. Hence you will find a huge difference in some brands as it has only been designed to suit larger markets than window cleaning.

There is a huge difference and what I am also finding out di vessels also have an impact into resin life but that is ongoing trials.

Doug

[[GQC] Tim]

About reduced flow saving resin, they said the same thing on a promo page for the Varistream 2 :

By allowing controlled reduction of water flow through the system, the varistream 2 improves the life of the expensive resin cartridge, thus saving the operator money on a daily basis.

[Moderator David@stives]

Doug

GLAD YOU SAID ONGOING TRIAL sounds more realistic than trying to say shake your vessils etc.

If it produces more , it should do no matter how you use it.

I may try a bag to see if i notice the difference