Tried SPM again

« **on:** February 20, 2012, 02:42:41 pm »

Following disapointing results using SPM I advertised 15kg tub for sale, fortunately no one bought it, so I gave it another try today.

5 bed house, wool mix cream carpet, moderately dirty, lot of black spots to ground floor. Mixed SPM on site, (usually mix pre-spays at home) vacuumed, sprayed down, 15 minute dwell time, (no agitation) hwe, very little spotting required. Carpets looked like new.

Custy and I extremely happy.

No tip

« **Reply #1 on:** February 20, 2012, 03:18:09 pm »

Well done! glad you had a better experience this time around!
Good results without agitation too

« **Reply #2 on:** February 20, 2012, 03:20:49 pm »

Good work fella.....

« **Reply #3 on:** February 20, 2012, 04:25:11 pm »

Think Solutions have got to Tony C what do you think

« **Reply #4 on:** February 20, 2012, 04:34:35 pm »

Quote from: Darren O on February 20, 2012, 04:25:11 pm

Think Solutions have got to Tony C what do you think

Have you tried SPM?

« **Reply #5 on:** February 20, 2012, 04:36:20 pm »

what do you think

« **Reply #6 on:** February 20, 2012, 04:38:45 pm »

Colin tries his hardest not to think

« **Reply #7 on:** February 20, 2012, 04:40:02 pm »

Quote from: Darren O on February 20, 2012, 04:36:20 pm

what do you think

Obviously you haven't, that's what I think.....

Am I right?

« **Reply #8 on:** February 20, 2012, 04:40:54 pm »

Quote from: Hector......... T/A CC Salisbury (ish) on February 20, 2012, 04:38:45 pm

Colin tries his hardest not to think

I do think...I just stop thinking when the wife comes home, it keeps me out of trouble

« **Reply #9 on:** February 20, 2012, 04:46:13 pm »

« **Reply #10 on:** February 20, 2012, 04:55:21 pm »

so you tried it found it crap so tried to sell it..... then tried it again and it worked.

not really conclusive results, you need to use the full container then make a decision

« **Reply #11 on:** February 20, 2012, 04:58:02 pm »

i am quite confused by SPM. The label says no optical brighteners. However everyone says it contains Soluboost which is described by Solutions as an oxygenating brightener

My concern is over its long term effect on Wool carpets. Does anyone know if Solution recommend it for use on Wool? Does it contain oxidisers or optical brighteners?

Nigel

« **Reply #12 on:** February 20, 2012, 05:02:08 pm »

Quote from: Mike Halliday on February 20, 2012, 04:55:21 pm

so you tried it found it crap so tried to sell it..... then tried it again and it worked.

not really conclusive results, you need to use the full container then make a decision

I agree, I'm only half way through my tub and I've had it for a few months... So far, I and my customers have been happy 100% of the time. But I will refrain from bigging it up any more until I've finished the whole tub....

« **Reply #13 on:** February 20, 2012, 05:14:20 pm »

Yer me too Colin, used it on about 20 jobs so far with great results... and there's loads left so i'll give everyone my conclusion as and when....

« **Reply #14 on:** February 20, 2012, 05:18:14 pm »

Quote from: Nigel_W on February 20, 2012, 04:58:02 pm

i am quite confused by SPM. The label says no optical brighteners. However everyone says it contains Soluboost which is described by Solutions as an oxygenating brightener

My concern is over its long term effect on Wool carpets. Does anyone know if Solution recommend it for use on Wool? Does it contain oxidisers or optical brighteners?

Nigel

I'll see if I can find you a definitive and honest answer, Nigel...

« **Reply #15 on:** February 20, 2012, 05:25:10 pm »

I was suprised to hear it had OB because I use it on all sorts of things including my own 80/20 carpets which I have done several times over the last 12 months thanks to Fido and I can see no degradation at all.

Waits for the Ah but under a magnifying glass response!

« **Reply #16 on:** February 20, 2012, 05:28:33 pm »

I would think the long term effect on wool carpets is negligible( if not non-existent) as it is rinsed of the fibre within 10-15mins unlike a detergent containing optical brighteners which is partly left on the fibre.

I think the term oxygenating brightener is a descriptive term rather than a scientific one

« **Reply #17 on:** February 20, 2012, 05:29:37 pm »

I think I am on my 3rd tub now, works great on all types of carpets.
I would imagine using my TM to flush it out would keep carpet safe,
i always have a acidic rinse in tank.

Couldnt say if there will be any long term damage

Andrew

« **Reply #18 on:** February 20, 2012, 05:32:18 pm »

The thread that keeps on giving :

Don't suppliars have to pay to advertise on these forums?

« **Reply #19 on:** February 20, 2012, 05:35:20 pm »

Quote from: Mike Halliday on February 20, 2012, 05:28:33 pm

I would think the long term effect on wool carpets is negligible( if not non-existent) as it is rinsed of the fibre within 10-15mins unlike a detergent containing optical brighteners which is partly left on the fibre.

I think the term oxygenating brightener is a descriptive term rather than a scientific one

Mike the SPM instructions give you guidelines for in tank portable use and metering concentrates for Truckmounts.

Nigel

« **Reply #20 on:** February 20, 2012, 05:50:27 pm »

in that case forget me previous post........ the carpet will melt and burst into flames within 20 mins releasing a radioactive dust cloud that will engulf the planet causing the death of all known life

to be sensible...... that's the problem with chemicals were the manufacturer doesn't give you the option to use a a pre-spray without the oxygen booster its got to be used on everything even if it not needed or suitable

« **Reply #21 on:** February 20, 2012, 06:06:24 pm »

If you mix it cold, the OB won't be activated anyway.... Surely

« **Reply #22 on:** February 20, 2012, 06:14:32 pm »

One thing i have noticed, after just three years carpet cleaning i am down to probably three chemicals now rather than having loads of stuff on the van, i use powerburst, and SPM, sometimes use ultrapac but thats it, almost the same with spotters the same ones come out on most jobs solvex, citrus gel, stain pro i did wonder whether SPM can be used as a spotter in the same way as pureclean a similar product i think, Prochem say you can mix it up very strong with almost boiling water and spot with it, i have had good results using it like this and wonder if spm can be used like this too.

« **Reply #23 on:** February 20, 2012, 08:02:03 pm »

SPM does not contain optical brightener.
It contains an Oxy boost type of thing.
This needs good hand hot water in the sprayer when mixing to activate It will then carry on for an hour or so. Too hot water will make it fizz and losr the oxy bit too quickly. It is best to mix enough for the job- 5 litres for an average 3 bed semi.
It will carry on working for a longer time but the oxy bit will be lost as the oxygen will be spent.
It works.

« **Reply #24 on:** February 20, 2012, 08:29:13 pm »

Quote from: Tony_C on February 20, 2012, 02:42:41 pm

..15 minute dwell time, (no agitation) hwe,

You may have been lucky on this occasion. Why on earth do you not agitate? its just as important as the other processes. Surely you wouldnt put shampoo in your hair and then rinse straight away without getting your fingers in your hair? No, of course not because you know its essential.

Quite simply your results would be better. It aint rocket science is it.

Mark

« **Reply #25 on:** February 20, 2012, 08:45:46 pm »

I think we all need to go back to the science classroom (or wikipedia

)

"An oxidizing agent (also called an oxidant, oxidizer or oxidiser) can be defined as a substance that removes electrons from another reactant in a redox chemical reaction. The oxidizing agent is "reduced" by taking electrons onto itself and the reactant is "oxidized" by having its electrons taken away. Oxygen is the prime example of an oxidizing agent, but it is only one among many" {source}

"Optical brighteners [...] are dyes that absorb light in the ultraviolet and violet region [...] of the electromagnetic spectrum, and re-emit light in the blue region [...] These additives are often used to enhance the appearance of color of fabric and paper, causing a "whitening" effect, making materials look less yellow by increasing the overall amount of blue light reflected" {source}

Optical brighteners and oxidising agents are TWO COMPLETELY DIFFERENT THINGS!!

Admittedly, the term "oxygenating brightener" is a little confusing. It sounds better than "oxygenating bleach" though

Still doesn't sound as bad as Dihydrogen monoxide and I get through gallons of it every day

« **Reply #26 on:** February 20, 2012, 09:31:48 pm »

So it contains an oxidising bleach. Surely it makes more sense to use a standard micro splitter/ detergent pre spray and add the oxidising bleach as a booster when required in extreme circumstances. I think this as the arrangement with Solutions Mpower and soluboost. Maybe this particular version of oxidising bleach is ok. It would be nice to know though before hosing down wool carpets with it.

I wonder if Prochem Pureclean contain "oxygenating brighteners"? Or do any other pre spray/carpet rinses contain them?

Nigel

« **Reply #27 on:** February 20, 2012, 09:40:22 pm »

Nigel I think the amount of it in the mixture is nowhere near as much as what you'd add to a pre-spray if you were mixing it yourself. Why not ask the main man on WoC?

« **Reply #28 on:** February 20, 2012, 09:47:26 pm »

Hi Jim,

I will ask Nick next time I speak to him. This thread reminded me of my concerns about using SPM on wool. I just thought some of the regular SPM users/supporters would know the answers

Nigel

« **Reply #29 on:** February 20, 2012, 09:53:25 pm »

Quote from: Mark Lawrence on February 20, 2012, 08:29:13 pm

Quote from: Tony_C on February 20, 2012, 02:42:41 pm
..15 minute dwell time, (no agitation) hwe,

You may have been lucky on this occasion. Why on earth do you not agitate? its just as important as the other processes. Surely you wouldnt put shampoo in your hair and then rinse straight away without getting your fingers in your hair? No, of course not because you know its essential.

Quite simply your results would be better. It aint rocket science is it.

Mark

What if it was a loop pile wool carpet? You would risk pulling and fuzzing the carpet fibres if you agitated. Sometimes all a carpet needs is a longer dwell time if you think there is a risk of damage to the carpet fibres....

« **Reply #30 on:** February 20, 2012, 10:32:18 pm »

On berbers I wouldn't rotary but I would contra rotate

but on certain occassions I may just use a pre spray only, I haven't tried SPM as I have a garage full of alsorts to get rid of first but it's on my list.

Shaun

« **Reply #31 on:** February 20, 2012, 10:50:28 pm »

Quote from: Colin Day on February 20, 2012, 09:53:25 pm

Quote from: Mark Lawrence on February 20, 2012, 08:29:13 pm
Quote from: Tony_C on February 20, 2012, 02:42:41 pm
..15 minute dwell time, (no agitation) hwe,

You may have been lucky on this occasion. Why on earth do you not agitate? its just as important as the other processes. Surely you wouldnt put shampoo in your hair and then rinse straight away without getting your fingers in your hair? No, of course not because you know its essential.

Quite simply your results would be better. It aint rocket science is it.

Mark

What if it was a loop pile wool carpet? You would risk pulling and fuzzing the carpet fibres if you agitated. Sometimes all a carpet needs is a longer dwell time if you think there is a risk of damage to the carpet fibres....

Obviously agitating on a loop carries risks - and I presumed he (a CC who would/should know this) knew this already. Didnt realise I had to add this to my comments

I'll re-phrase what I said Colin ..."except berber loops where it may be deemed risky thus possibly causing fuzzing/fibre damage - except where a carpet may be heavily worn and the risk is acceptable in the circumstances". or something like that.

Is that better

Mark

« **Reply #32 on:** February 20, 2012, 10:53:45 pm »

S P M does not contain optical brightners and Tony C have you ever tried mixing spm on the job as this keeps it hot and this is how it works best and if you want better results try a bit of agitating Des

« **Reply #33 on:** February 20, 2012, 11:29:24 pm »

was gonna have a snoop at its contents , but cant see an MSDS sheet for SMP or Mpower ...

« **Reply #34 on:** February 21, 2012, 07:30:58 am »

Quote from: john martin on February 20, 2012, 11:29:24 pm

was gonna have a snoop at its contents , but cant see an MSDS sheet for SMP or Mpower ...

Nick with gladly provide one at your request... But that's gonna be difficult as he will have to send it to never never land to reach you.....

« **Reply #35 on:** February 21, 2012, 07:33:12 am »

Quote from: Mark Lawrence on February 20, 2012, 10:50:28 pm

Quote from: Colin Day on February 20, 2012, 09:53:25 pm
Quote from: Mark Lawrence on February 20, 2012, 08:29:13 pm
Quote from: Tony_C on February 20, 2012, 02:42:41 pm
..15 minute dwell time, (no agitation) hwe,

You may have been lucky on this occasion. Why on earth do you not agitate? its just as important as the other processes. Surely you wouldnt put shampoo in your hair and then rinse straight away without getting your fingers in your hair? No, of course not because you know its essential.

Quite simply your results would be better. It aint rocket science is it.

Mark

What if it was a loop pile wool carpet? You would risk pulling and fuzzing the carpet fibres if you agitated. Sometimes all a carpet needs is a longer dwell time if you think there is a risk of damage to the carpet fibres....

Obviously agitating on a loop carries risks - and I presumed he (a CC who would/should know this) knew this already. Didnt realise I had to add this to my comments

I'll re-phrase what I said Colin ..."except berber loops where it may be deemed risky thus possibly causing fuzzing/fibre damage - except where a carpet may be heavily worn and the risk is acceptable in the circumstances". or something like that.

Is that better

Mark

Marginally less condescending as you didn't finish it off with the "It's not rocket science" bit... Well done you!!!!

« **Reply #36 on:** February 21, 2012, 02:54:15 pm »

Quote from: Mark Lawrence on February 20, 2012, 08:29:13 pm

Quote from: Tony_C on February 20, 2012, 02:42:41 pm
..15 minute dwell time, (no agitation) hwe,

You may have been lucky on this occasion. Why on earth do you not agitate? its just as important as the other processes. Surely you wouldnt put shampoo in your hair and then rinse straight away without getting your fingers in your hair? No, of course not because you know its essential.

Quite simply your results would be better. It aint rocket science is it.

Mark

Why on earth would you agitate if getting excellent results without.

Agitating takes time, time is money. It aint rocket science is it.

What was the point of your post? Was it to appear superior if so you failed.

Was it to improve your post count - well done.

« **Reply #37 on:** February 21, 2012, 03:18:40 pm »

Quote from: Tony_C on February 21, 2012, 02:54:15 pm

Quote from: Mark Lawrence on February 20, 2012, 08:29:13 pm
Quote from: Tony_C on February 20, 2012, 02:42:41 pm
..15 minute dwell time, (no agitation) hwe,

You may have been lucky on this occasion. Why on earth do you not agitate? its just as important as the other processes. Surely you wouldnt put shampoo in your hair and then rinse straight away without getting your fingers in your hair? No, of course not because you know its essential.

Quite simply your results would be better. It aint rocket science is it.

Mark

Why on earth would you agitate if getting excellent results without.

Agitating takes time, time is money. It aint rocket science is it.

What was the point of your post? Was it to appear superior if so you failed.

Was it to improve your post count - well done.

Touché

« **Reply #38 on:** February 21, 2012, 04:03:12 pm »

Quote from: Tony_C on February 21, 2012, 02:54:15 pm

Quote from: Mark Lawrence on February 20, 2012, 08:29:13 pm
Quote from: Tony_C on February 20, 2012, 02:42:41 pm
..15 minute dwell time, (no agitation) hwe,

You may have been lucky on this occasion. Why on earth do you not agitate? its just as important as the other processes. Surely you wouldnt put shampoo in your hair and then rinse straight away without getting your fingers in your hair? No, of course not because you know its essential.

Quite simply your results would be better. It aint rocket science is it.

Mark

Why on earth would you agitate if getting excellent results without.

Agitating takes time, time is money. It aint rocket science is it.

What was the point of your post? Was it to appear superior if so you failed.

Was it to improve your post count - well done.

You were complaining that you couldnt get a result and that you dont agitate. I was explaining obviously why (my analogy is absolute sense - as you know). Perhaps you dont understand what CHAT means? Most CC's do.

Maybe your a splash n dash (as you say it takes 'time' to do this, so lets cut this bit out) - well done.

Mark

« **Reply #39 on:** February 21, 2012, 04:32:53 pm »

« **Reply #40 on:** February 21, 2012, 05:38:05 pm »

Laundry detergent contain fluorescers (optical brightners) they are really just for whites, we use blue fluorescers, some countries used to use red as they believed the red White looks whiter whilst we believed the blue White looks whiter.

Thats why White shirts glow blue under UV. - it's the detergent.

You can usually see if our c/cing detergents have flouecesers because it has a blue glow.

To see if SPM has just put under UV light.

But to be honest it's to diluted to have any effect on carpets.

« **Reply #41 on:** March 15, 2012, 08:18:37 am »

So what is the key to using this agitation or dwell time?

« **Reply #42 on:** March 15, 2012, 08:45:12 am »

When I use SPM, I spray it down very hot (a kettle which has been boiled 10 minutes previously), brush it immediately with a Rotowash, run my hoses and warm up the TM, then get busy extracting.
So, it gets a good agitation, and approx 15 minutes dwell time. I spray any dark patches first to give them longest dwell.

This is what works for me.

« **Reply #43 on:** March 15, 2012, 11:36:58 am »

Still undecided on SPM, twice in the last couple of weeks i have had a wool carpet and the traffic lane was a little more soiled than elsewhere, tried SPM not happy with the results got some Powerburst which improved it quite a lot, feel like using Powerburst on everything :

i have yet to find anything as good on synthetic or wool trouble is i worry about using it on wool, if i thought it were without risk i would only use Powerburst.

« **Reply #44 on:** March 15, 2012, 01:44:30 pm »

James what is the risk of using it on wool?

« **Reply #45 on:** March 15, 2012, 06:57:54 pm »

Paul

I honestly don't know, in three years i have been using it i am still waiting for that wool berber to turn yellow, but they sell stuff thats safe on wool, Powerburst aint one of them, ergo it could damage wool.

Have to ask woolsafe you know those people that endorse those products that we know bleach carpets, maybe not. I think the science suggests that higher alkaline can damage wool, over to you Doug

« **Reply #46 on:** March 15, 2012, 07:29:29 pm »

James, i'm sure if you look on the side of the tun, it says you can use it on wool, but must acid rinse!!

« **Reply #47 on:** March 15, 2012, 07:43:44 pm »

I stand to be corrected but isn't/wasn't it taught that wool carpets should be left in an acidic state preferably around the ph6 to 7 range, therefore a high alkaline cleaner needs to be 'corrected.'

« **Reply #48 on:** March 15, 2012, 07:57:39 pm »

Quote from: Billy Russell on March 15, 2012, 07:29:29 pm

James, i'm sure if you look on the side of the tun, it says you can use it on wool, but must acid rinse!!

Yes it does, a carpet i did this week was a wool berber it was spotless just lightly soiled but the traffic lane next to the kitchen was dirtier i had to mix up some Powerburst to get a decent result, i do find it frustrating, maybe i am lazy but it can be a real pain having to re-clean. does anyone just use Powerburst.

« **Reply #49 on:** March 15, 2012, 07:58:38 pm »

If flushed / rinsed correctly power burst drys neautral

« **Reply #50 on:** March 15, 2012, 08:01:23 pm »

I use Powerburst alot and Hydramaster blitz!!!! both are really good!

« **Reply #51 on:** March 15, 2012, 08:07:28 pm »

Quote from: Billy Russell on March 15, 2012, 08:01:23 pm

I use Powerburst alot and Hydramaster blitz!!!! both are really good!

ut Billy, why use a sledgehammer to crack a nut??

« **Reply #52 on:** March 15, 2012, 08:11:19 pm »

Quote from: AshWhite on March 15, 2012, 08:07:28 pm

Quote from: Billy Russell on March 15, 2012, 08:01:23 pm
I use Powerburst alot and Hydramaster blitz!!!! both are really good!

ut Billy, why use a sledgehammer to crack a nut??

Because its quicker and you get a more through clean, thats about it really

« **Reply #53 on:** March 15, 2012, 08:19:49 pm »

Well said Mossy!!!

« **Reply #54 on:** March 15, 2012, 08:21:42 pm »

Ditto but if I were to get some free sample of spm I would give it a go

« **Reply #55 on:** March 15, 2012, 08:26:53 pm »

Shame you weren't a bit closer Len, you could of had half the tub i've got!!

« **Reply #56 on:** March 15, 2012, 08:32:59 pm »

If you have a TM the flush is greater so providing your water ph is around neutral then the dilution will send it that way, without getting into a debate of porty to TM you do clean differently with a TM.

I only use an acid rinse if I'm protecting something, as for pre sprays I use different once but don't be fooled into thinking because products are eco friendly or leave no tracable residue that they are set within the Woolsafe parameters, Pure clean is a Micro splitter and has a ph9 not sure what the ph of SPM is?

Shaun

« **Reply #57 on:** March 15, 2012, 08:36:32 pm »

Shaun whats a Micro splitter?

« **Reply #58 on:** March 15, 2012, 08:38:19 pm »

Hang on he's searching google!!!

« **Reply #59 on:** March 15, 2012, 08:38:58 pm »

Wiki pedia

« **Reply #60 on:** March 15, 2012, 08:40:22 pm »

Quote from: Paul Moss on March 15, 2012, 07:58:38 pm

If flushed / rinsed correctly power burst drys neautral

Everything dries neutral things aren't acidic or alkaline until they are wet

« **Reply #61 on:** March 15, 2012, 08:41:52 pm »

Quote from: Shaun_Ashmore on March 15, 2012, 08:32:59 pm

If you have a TM the flush is greater so providing your water ph is around neutral then the dilution will send it that way, without getting into a debate of porty to TM you do clean differently with a TM.

I only use an acid rinse if I'm protecting something, as for pre sprays I use different once but don't be fooled into thinking because products are eco friendly or leave no tracable residue that they are set within the Woolsafe parameters, Pure clean is a Micro splitter and has a ph9 not sure what the ph of SPM is?

Shaun

9.9

« **Reply #62 on:** March 15, 2012, 08:41:59 pm »

Marketing bumf invented about 15 years ago by Amtech.

Shaun

« **Reply #63 on:** March 15, 2012, 08:45:05 pm »

what is?

« **Reply #64 on:** March 15, 2012, 08:49:03 pm »

Quote from: CARPET KNIGHTS on March 15, 2012, 08:40:22 pm

Quote from: Paul Moss on March 15, 2012, 07:58:38 pm
If flushed / rinsed correctly power burst drys neautral

Everything dries neutral things aren't acidic or alkaline until they are wet

So how can a carpet be left in an acid state or alkaline state?

« **Reply #65 on:** March 15, 2012, 08:50:35 pm »

Quote from: Paul Moss on March 15, 2012, 08:49:03 pm

Quote from: CARPET KNIGHTS on March 15, 2012, 08:40:22 pm
Quote from: Paul Moss on March 15, 2012, 07:58:38 pm
If flushed / rinsed correctly power burst drys neautral

Everything dries neutral things aren't acidic or alkaline until they are wet

So how can a carpet be left in an acid state or alkaline state?

Please enlighten us ordinary folk oh master!!!!!

« **Reply #66 on:** March 15, 2012, 08:56:30 pm »

Quote from: Tony Rowley on March 15, 2012, 08:50:35 pm

Quote from: Paul Moss on March 15, 2012, 08:49:03 pm
Quote from: CARPET KNIGHTS on March 15, 2012, 08:40:22 pm
Quote from: Paul Moss on March 15, 2012, 07:58:38 pm
If flushed / rinsed correctly power burst drys neautral

Everything dries neutral things aren't acidic or alkaline until they are wet

So how can a carpet be left in an acid state or alkaline state?

Please enlighten us ordinary folk oh master!!!!!

He will have to charge you to enlighten you

« **Reply #67 on:** March 15, 2012, 08:56:40 pm »

It's the time it takes to dry (or stay damp for) that can do the damage (if at all) a good rinse will neutralise it BUT if the carpet is left to dry in a high ph state then the next cleaner could in theory have a potential problem if he/she is then going in to clean or stain remove.

All ifs and buts.

Shaun

« **Reply #68 on:** March 15, 2012, 09:00:10 pm »

Ph will register if water is added as goron says as you need hydrogen. If you want to get an accurate ph result test when nearly dry or dry and add a small amount of pure water.

« **Reply #69 on:** March 15, 2012, 10:51:02 pm »

The problem with pH isn't after it is dry, it is whilst it is drying... the longer the drying time if pH left high, the more likely browning is to occur. Simple as that.

Residue/resoiling however is another issue entirely

« **Reply #70 on:** March 15, 2012, 10:57:49 pm »

Yeah but no but yeah but ph has never been confirmed as a contributing factor of resoiling.

Shaun

« **Reply #71 on:** March 15, 2012, 10:58:08 pm »

Has anyone ever seen or browned a carpet after cleaning. Only ever seen browning from a water damage problem.

Mark

« **Reply #72 on:** March 15, 2012, 11:02:59 pm »

Shaun, I was referring to residue causing re-soiling, not pH

Mark, I've never browned a carpet from cleaning but know of some that have, and fixed a few that have. Always 100% of the time the drying time has been long. It's the length of time it's wet PLUS the alkalinity that browns wool. Each factor on its own in my experience not a big problem.

« **Reply #73 on:** March 17, 2012, 04:36:21 pm »

I have fixed a few for a customer of ours. Cotton upholstery and cream wools mainly. Given up telling him that a 100psi pump upgrade in a 1x2 stage motor machine running double clean on every job is asking for trouble.

His view is that its only about 5% of the time he has a problem.

« **Reply #74 on:** March 17, 2012, 07:07:14 pm »

I have been told that Jim has browned a couple of carpets in the past when he has had a few

« **Reply #75 on:** March 17, 2012, 09:28:26 pm »

Browned a few other things too but that's a different story