Dual In line TDS meter... any interest?

[natehat]

I need one and would like to pay a little over 20$

There was a group buy for these a couple months ago... just looked up the info and it looks like if we get 10 they are ~22$ each.

if any local shops are thinking of a deal on these with the RO/DI sales, post here :) because people getting new RO/DIs might want to pick one of these up.

anyone interested?

[littlep93056]

What one , do you have a particular one in mind , the price range varys on them

[natehat]

here is the link from the last group buy

http://www.freshwatersystems.com/products/index/p1228/1228/None/None

the model was: DM-1 In-Line Dual TDS Meter


I would be fine with that one... looks like the basic standard type. but would be happy with any unit that works well if anyone has different suggestions

is there a big advantage to more expensive units? i am guessing all they do is measure resistance so i can not see why a more expensive unit has much worth for this kind of application

[Liam]

I'd be in,Liam.

[TOOMANYFISH]

I`m in for 1.

[littlep93056]

Marco since your running a special next month on on ro/di parts & stuff how about picking up on this

[agent6473]

How do you set those up with the RO/DI system? I might be interested if the price is right on it.

Chris

[FishyIdea]

I "lost" a box of expensive aquarium gadgets and a box of expensive tools in the move to my new place. (I tipped those movers really well, too. :mad: ) Just realized my hand held TDS meter is also missing.

Thinking out loud...

I have a four stage: micron, carbon, RO, DI.

There are several points worth measuring, since the different system components are replaced at different times:

Tap
after micron cartridge
after carbon
after RO
after DI

Although the tap quality is interesting to know, it's not likely to vary much in the short term. Even if it does, that's a bigger problem than the scope we are talking about. So, not a critical test point.

The micron cartridge can be tested visually. (If it looks nasty, change it.) So, not a critical test point. On my system, you could not easily add a monitor connection after this point anyway.

Wouldn't after the carbon stage be a really useful, if not critical, test point? I was told that I should replace carbon roughly once for every two micron cartridge changes. If I had a test point here, I could see how much improvement a new micron cartridge made and decide whether or not to swap out carbon at that time. So, a useful test point.

After your RO stage is the key measure for drinking water purity. So, a critical test point.

DI swap outs will vary widely depending on source water and use rate, and this is the key measure for aquarium health. So, a critical test point.


Question: have I just talked myself into buying two test units? :D


Joe

[littlep93056]

looks like it

[FishyIdea]

My DI cartridge changes colors as it gets closer to the end of its useful life. Maybe you don't need a TDS test point there. I wonder how reliable this visual test is?

I still want two. :D

What's the likely time frame? I finally got my granite counter drilled a couple of weeks ago, so I want to set up my RO\DI ASAP and move on to the next challenge. Like buying a tank. :cool:

[natehat]

I would like to grab one soon too... set up my RO/DI, but want to make sure it is working well before using it for the aquarium-

looks like we have 6 interested so far, if we get 4 more we can set up an order online for the price break at 10, still haven't heard if any sponser is interested :)

[littlep93056]

I can't check till Tuesday

[natehat]

bump.....

thought i would check one more time if anyone else is interested in one or 2 of these- looks like we still need 4 more to get the price break online, or a nice local sponsor :) who would like to set up a group price

[Puffer]

I might need one. I still don't know. Depending if I buy an RoDi soon enough. Any recommendation on RoDi unit?

[natehat]

It seems like an hard question to answer... if you search for RO/DI in this forum you will find a lot of advice. I just got a used one form some guy on craigslist who bought it then changed his mind about needing it. I would go for cheapest myself, with a TDS meter you can tell if it is working right anyway. only thing i would recommend for sure if you are going to use it for drinking water is a holding tank, because without it you will wait too long for a glass of water if you are impatient-

Marco at fishy business was having a sale this month on them

[Puffer]

Thanks nate. I did hear about Marco. But I don't know where is his store? Is he going to post the list and price on the forum? What about those that are sold on Ebay?

[97vmax]

I'm in for one.

[97vmax]

I bought this one off of EBAY and it works perfect for me. 6 stage RO

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=20756&item=4357067687&rd=1

[Sir Hoggas]

Puffer, go with Marco on the RO/DI. Great service, great unit, great price.

[Paul K]

I'd be in for one if this is still happening

[JavaJones]

Add me...

[saltwaterB]

I will take two please.

-B-

[Rob]

1 here

rob

[ReeferMedic]

I'll take one also if this hasn't gone through yet.........

[Reef55]

1 for me also :)

[ReeferMedic]

Should I be checking to tds at more than one location? If so, count me in for two........

[nunofs]

Should I be checking to tds at more than one location? If so, count me in for two........

A dual meter (like the one on this thread) will allow you to measure TDS after RO and after DI (or before and after RO), one unit should be enough to calculate membrane efficiency and/or to know when to replace filters/resin. Unless you want to measure TDS before RO, after RO, and after DI, in which case you'd need two units (or a dual unit plus a handheld meter).

Nuno

[97vmax]

What's the timeframe for this order? I need to get one pretty soon so if this isn't going to happen for a while, I'll back out of this order.

Thanks
Ken

[testhead1313]

I'm in for one if I can get up north sometime. I'm on the southcoast and don't go up towards Boston very often; busy with work and school. Let me know if anyone from around here is interested and would pick it up for me. I could meet that someone somewhere closer. LMK, thanks
Chris

[Liam]

I'm in for one if I can get up north sometime. I'm on the southcoast and don't go up towards Boston very often; busy with work and school. Let me know if anyone from around here is interested and would pick it up for me. I could meet that someone somewhere closer. LMK, thanks
Chris

South coast??? wheres that :D i'm in Abington and would pick it up for you,if that helps any.
-Liam.

[testhead1313]

Sorry, that was sort of ambiguous, wasn't it? ;) I'm in New Bedford.

[Liam]

Sorry, that was sort of ambiguous, wasn't it? ;) I'm in New Bedford.

If i'm close enough for you i would gladly pick it up :)

[ReeferMedic]

A dual meter (like the one on this thread) will allow you to measure TDS after RO and after DI (or before and after RO), one unit should be enough to calculate membrane efficiency and/or to know when to replace filters/resin. Unless you want to measure TDS before RO, after RO, and after DI, in which case you'd need two units (or a dual unit plus a handheld meter).

Nuno
Thanks Nuno......

[TOOMANYFISH]

I'm in for 1

[ReeferMedic]

What is the time frame for this any way? This thread was started over a month ago.

[Armando]

i'm not sure if there is actually a polled order going on here. is there?

[dedfish]

Dunno...looks like there should be, but I sure don't want to organize it. :) If this ever materializes I might be interested.

[nickoz]

I am interested in one.

-nick

[natehat]

Hey All... i made the original post, but since the total only ever got to 8 (10 units were needed to get the price break), i just let it go.

Looks like there are a bunch more people interested in getting one of these- i still need one too and am still happy to organize it.

so lets do it this way to make it easier since i am not sure who from the older postings is still interested.

Send me a _PM_ stating that you for sure are in, lets say by this sunday. Then monday i will post the list of who wants one (or more) and i will place the order next week if the total gets past 10 which it looks like it will.


figure on adding a buck or 2 of the stated price $21.56 depending on their shipping costs and how many we order

pickup would be in JP in the evening or possibly can meet near the longwood med area during the day if it is easier for a few.

[Liam]

Any chance of picking up at the meeting?

[natehat]

not sure if i will be able to make it to the meeting this month, always end up having work that day :(

maybe someone who is 100% will volunteer to bring them to the meeting if i can not make it :)

[TOOMANYFISH]

I could p/u for the southshore people if they are willing to p/u in Braintree.

[aha24]

I will take one If I can send money paypal..ect. and have it mailed to me

[natehat]

aha 24, sure you are pretty far away it looks like... you would have to add 3.85 for priority mail to whatever the total works out to. paypal is fine.

So far 7 people are confirmed:

1 natehat (me)
1 Reef55
1 Armando
1 TOOMANYFISH
1 97vmax
1 aha24
1 ltelus

-PM me by sunday to be added to the list-

[natehat]

adding 2 more units for The Perfect Pet... makes the total 9. One more and the order will for sure go through (10+ needed for price break)-

[nunofs]

I'll take one, if someone can bring it to a meeting (Chris, could you do that for me, please?).

Nuno

[TOOMANYFISH]

I don't know if i can go to the meeting yet but if i do i'd be glad to bring it for you.

[nunofs]

Thanks Chris!

natehat: please count me in for one.

Nuno

[natehat]

cooooool... that makes 10 confirmed.

still will give people till sunday to sign up, since it is a pretty sweet discount and don't want to leave anyone out who was interested.

i will place the order monday morning, so if all goes well they will be in by next weekend. I will pay with my credit card... you can pay me however you like cash or check is fine.

i am really not familiar with paypal... i do have an account (which i have used to pay others but never to receive), It is a personal account which i think is not able to take $$ generated from credit or debit cards. so for aha 24 if you prefer to use paypal think it has to be from cash you loaded to paypal... of course you can just send me a check if it is easier.

[Liam]

cooooool... that makes 10 confirmed.

still will give people till sunday to sign up, since it is a pretty sweet discount and don't want to leave anyone out who was interested.

i will place the order monday morning, so if all goes well they will be in by next weekend. I will pay with my credit card... you can pay me however you like cash or check is fine.

i am really not familiar with paypal... i do have an account (which i have used to pay others but never to receive), It is a personal account which i think is not able to take $$ generated from credit or debit cards. so for aha 24 if you prefer to use paypal think it has to be from cash you loaded to paypal... of course you can just send me a check if it is easier.

Nate i believe paypal will charge you % for recieving cash when there are no goods involved,in that i mean you did'nt physically list and sell an item.
I say this because a guy at work needed to pay for something with his paypal account but did'nt have the funds there so gave me the cash and i transferred funds from my paypal account to his.He got charged a couple of % on the transaction.There may have been another reason he was charged but i wanted you to be aware before you open your doors to accepting paypal.
Someone may know how to get around this charge if they do please chime in!
-Liam.

[nunofs]

You're both right... personal accounts can't receive credit card payments, you need to upgrade to a premium account for that (it's free). However, once you have a premium account, you get charged a 2.9% + $0.30 fee for each payment you receive, regardless of where the funds come from (credit card, paypal balance, etc).
The issue with paying for goods or just transfering money is a different one, and I believe there are additional fees if you're just transferring money (it counts as a cash advance on the credit card).

Nuno

[natehat]

Right... so if you have paypal linked to a bank account there are no fees for transfer. That is why i left my account as a personal one- then you can transfer cash between people with no charge at all (of course except the risk of having a bank account linked to paypal :eek: )

anyway people can pay me whatever way works... i am more than happy to try paypal, it is only a little over 20$ so it should not be too hard to figure something out

[Liam]

Right... so if you have paypal linked to a bank account there are no fees for transfer. That is why i left my account as a personal one- then you can transfer cash between people with no charge at all (of course except the risk of having a bank account linked to paypal :eek: )

anyway people can pay me whatever way works... i am more than happy to try paypal, it is only a little over 20$ so it should not be too hard to figure something out

My account is a personal one and the funds came from my paypal account balance,his account was a personal account and he still got charged!!

[FishyIdea]

glad to see this picked up steam again.

I want one. I'm in lowell, so I'd need mailing too, unless we can get a northern "distributor"

[natehat]

THE FINAL LIST:

1 natehat (me)
1 Reef55
1 Armando
1 TOOMANYFISH
1 97vmax
1 aha24 (ship)
1 ltelus
2 The Perfect Pet
1 Nuno
1 testhead1313 (ship)
1 ReeferMedic (ship)
1 FishyIdea (ship)

total = 13 units

Final price with shipping and hand to me (divided by 13) will be posted monday afternoon. for the 4 who requested shipping add 3.85 to the total to ship to you, unless it works out that someone near you is picking one up that can pick up yours too :)

please post or send me a message if there are any changes to the final list by monday morn, since i am paying with my credit card and don't want to get any extra units :)

very excited to test out my RO/DI

[natehat]

They are all ordered... called to confirm they are shipping today and expected to arrive wednesday or thursday. I will post when they arrive and what times i am around for pickup.

for the 4 that wanted them shipped i please PM me with how you prefer to pay. if you are sending a check i will PM you my address... if you want to try paypal (and have cash linked acct) i will send you my paypal linked email. everyone else can just bring the $$$ when they pickup-

The total cost with shipping & hand to me is:
294.36
/13
= $22.64 each

(if you are having me then ship to you the cost is 26.49)

pretty easy :)

[testhead1313]

This is just an odd idea, but would anyone else be interested in what eachother's readings are? Maybe a tap reading and an RO reading with info about where you are and what RO unit you're using? I thought this might be kind of interesting and considering we're all receiving the same unit, I think the results should be pretty accurate. But then again I am just a big geek, and everyone probably thinks I'm nuts. LMK
Chris

[ReeferMedic]

Yep, the name definately fits........

[testhead1313]

Rotfl :) :) :)

[natehat]

For those who sent $$ already with paypal for them to be shipped off
they will be in the mail first thing thursday morning.

For those who are picking up i will for sure be home:
Wednesday (today) after 6
Thursday after 7
Friday (busy)
Saturday afternoon

also will be home some on sunday or if next week works out better for
you thats fine as well.

if it is easier for you to pick up during the day thurs or friday,
send me a pm and i will bring your meter to work with me.

PM me with what time you are picking up and i will make sure to be
there also i will send you my address to mapquest directions and my #
incase you get lost-

[CamaroJWeed]

Crap, CRAP, cRAP..I CAN'T BELIEVE i MISSED THIS..aghhhh...I thought it had fallen throught the cracks...

Natehat could you PM me with info on who they were purchased through, maybe I could set up a group buy for some guys in the CT RI area...

Thanks

Jason

[Armando]

Natehat anytime you want me to send payment let me know.

[natehat]

Yeah sorry you missed... i will pm you if anyone for somereason backs out.

the link to the company is on the first page of this thread. if you get 10+ units you get a nice price break.

also the company was great... shipped them off the same day the order was placed and they all arrived intact and well packed-

armondo- tonight/tomorrow night is fine with me. i will be home by 6 tonight and 7 tomorrow night. i will pm you my addy. also will be around saturday afternoon and plenty next week-

[ReeferMedic]

Nate,
I sent the check this am. You should get it Friday, maybe Saturday. Thanks again Nuno!

[nunofs]

Nate,

I'm trying to see if someone can pick up my meter and bring it to the meeting... if you want me to send payment in the meanwhile (either a check or paypal), please let me know where to send the $$. If noone can pick it up for me, I'll probably ask you to mail it to me (and I'll pay the difference in price to have it shipped, of course).

Thanks again,
Nuno

[aha24]

Nate I recieved My TDS meter today Thank You very much nor I just have to get a RO/DI unit