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What’s your PPM before DI

GGCleaningServices

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27
Location
London
I know it’s been asked before by others as I did do a search tonight but I was wondering if it would be a good idea to have a thread dedicated to everyone’s readings.

This could help others to find a ball park figure for their readings, or what to expect before purchasing a new membrane. 

Remember to include the following:

•Size and and make of membrane.

•PSI (boosted or not boosted)

•PPM going in, PPM coming out. 

•Location. 

Il start...

•Axeon HF5 4040

•43PSI Not Boosted,

•357 PPM IN - 019 PPM Out (before di)

•Romford Essex.

 
About 7 when I change filters, it's up to about 15 now so I should probably change them soon.

No idea what psi or filters but tap tds fluctuates between about 120-200 but typically 150 ish.

 
Last edited by a moderator:
tds 320 approx 

450gpd

after RO 009

after DI 000

as soon as it gets 001 I change resin.

 
It fluctuates out of my tap but generally around 85. 

Sometimes it 0 after RO going into DI, usually around 4-5.

0ppm after DI. 

 
4021 Ro with Axeon HF5 Membrane
60 psi mains no booster
152 ppm in
4-5 ppm out
0 ppm after Di
@Green Pro Clean Ltd when you say not changed filters do you mean sediment & carbon ?



Sent using the http://Window Cleaning Forums mobile app

 
Tap circa 400

after 450 ro 10 (was 7 about 4 months ago)

change rising now at 2

herts

 
Last edited by a moderator:
Here goes with the highest tap reading so far, from woodbridge near ipswich.

Tap between 510 to 530

40 21 RO with axeon membrane (forget which, the one for low pressure I think)

pressure, about 50 to 55

out of RO 13 to 14, which is great from that horrendous tap reading.

Out of di, usually 0, but 1 now and then as resin gradually weakens.

 
210 ish at the tap

Presure 60psi at tap

TDS 007/009 

Pressure 100psi after booster

TDS 006/007 after RO with booster

20" pre filters

40" HF5

TDS out of 25L DI 001PPM at the moment, has been for 2+ weeks

Changed resin last November 

A flush usually brings the TDS down slightly

 
Here goes with the highest tap reading so far, from woodbridge near ipswich.

Tap between 510 to 530

40 21 RO with axeon membrane (forget which, the one for low pressure I think)

pressure, about 50 to 55

out of RO 13 to 14, which is great from that horrendous tap reading.

Out of di, usually 0, but 1 now and then as resin gradually weakens.
When we had our konnetico water softener fitted to the house, the geezer who fitted it said that our water (Thames water) was the second highest tap reading in the country after the water in the east of England, so that makes sense what you’ve said 

 

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