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Thread: PH controllers

  1. #21
    Quote Originally Posted by JAY76 View Post
    Hi John ,I am very interested any idea on price?pm if rather keep the price off the thread.
    jay
    No idea at all. Open to offers. If you want I’ll take some pictures tomorrow.

  2. #22
    I am looking to get all that kit over the next month or two,seen that you bought top end gear,really depends on price you are looking for,I don’t want to take the p**s with a cheeky offer

  3. #23
    Fire away mate, I won’t be insulted. Don’t go so low that other people gazump you though PH controllers
    Where abouts are you? I would rather you pick it up than me shipping it. I’m just outside Grantham.

  4. #24
    I am on the east coast (lowestoft),as unsure on the life of the 4040 membrane and ph probe and dosing pump was thinking about £350-£400 hope i am not taking the p**s ,any idea on the state of membrane and ph probe from when you last used it?
    jay

  5. #25

    PH controllers

    Quote Originally Posted by JAY76 View Post
    I am on the east coast (lowestoft),as unsure on the life of the 4040 membrane and ph probe and dosing pump was thinking about £350-£400 hope i am not taking the p**s ,any idea on the state of membrane and ph probe from when you last used it?
    jay
    The dosing pump is nothing special, I think it was a washing machine one that I built a box around.
    The 4040 is in a stainless steel case and was only used for a few months before I decided to try no RO.
    The controller is a Thermo Scientific Alpha pH 560
    The Probe is a Sentek PI11/PR100/5M CFE but has been sat in pond water for two or three years. It’s a good one so I’d have thought it will calibrate ok but I really can’t be sure.
    There are a few other bits and pieces I’m sure like timers, powered valves, tank for the bicarbonate solution etc. You can have any of them I can find!

  6. #26
    The controller and 4040 are just what I am looking for,the ph probe is anyone guess to how good it is,but it is the one I was going to use.
    just a case of haggling over money your looking for, willing to travel

  7. #27
    Quote Originally Posted by JAY76 View Post
    The controller and 4040 are just what I am looking for,the ph probe is anyone guess to how good it is,but it is the one I was going to use.
    just a case of haggling over money your looking for, willing to travel
    How about £400 for the membrane, membrane holder (I’m sure there’s a proper name for them!), controller, probe and dosing pump so you know where you are and we haggle over the other stuff if you want it (and if I can find much) when you’re here? I might even have flow meters and an online TDS meter.

  8. #28
    I am happy to do that ,any other bits for the R.O. would be good as well.
    would you prefer cash or bank transfer?

  9. #29
    Quote Originally Posted by JAY76 View Post
    I am happy to do that ,any other bits for the R.O. would be good as well.
    would you prefer cash or bank transfer?
    Either cash or bank transfer is fine.
    When are you thinking?
    I’ll PM you my address.

  10. #30
    Quote Originally Posted by JAY76 View Post
    Thanks for the links ,been looking at absolute koi but was unsure on ph probe.

    now using my old R.O. unit to lower TDS ,gh etc,then going to recycle pond water though new 4040 unit,still unsure on how to pipe up backwash on 4040.any advise on how you done yours? Cheers jay
    Same as your normal RO but instead of using a flow restrictor I use a tap “circled in the middle of the photo” the solenoid valve is controlled by a timer to open for 1 min during each hour the 40/40 membrane is running.
    IMAG0410_LI.jpg

  11. #31
    Quote Originally Posted by keithatrax View Post
    Same as your normal RO but instead of using a flow restrictor I use a tap “circled in the middle of the photo” the solenoid valve is controlled by a timer to open for 1 min during each hour the 40/40 membrane is running.
    IMAG0410_LI.jpg
    Thanks Keith,gives me a good idea of the plumbing

  12. Thanks keithatrax Thanked / Liked this Post
 

 
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