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Old 05/08/2007, 12:50 PM   #1
spankey
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Best place to buy TDS calibration fluid?

I have a Hanna TDS meter that I think needs to be recalibrated. I am getting weird readouts on the meter as if its getting wacky. I replaced the batteries and its still acting funny. I think it needs to be recalibrated.

I am looking for a good online sponser to buy from. Dr.Mac's has it for $4.99 but for some reason when I check out it adds a $10 handling charge to the order and they are charging me $38 for shipping to boot!

Can anyone suggest a good online RC source that sells reasonable TDS calibration fluid?

Thanks
Spankey


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Old 05/08/2007, 01:14 PM   #2
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I got my 53.0 mS solution from thatpetplace.com for about 3.00


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Old 05/08/2007, 05:13 PM   #3
spankey
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Isn't that for a salinity monitor? I am looking for TDS cal. Fluid...


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Old 05/08/2007, 05:18 PM   #4
bertoni
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LabSafety.com a range of calibration fluids. Cole-Parmer does, as well. I've ordered various items from both vendors online, although I'm not sure what they're shipping charges would be.


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Old 05/08/2007, 06:52 PM   #5
HowardW
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Quote:
Originally posted by spankey
Isn't that for a salinity monitor? I am looking for TDS cal. Fluid...


Ooops, LOL. I got my TDS calibration fluid on Ebay at a good price, just do a search.


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Old 05/08/2007, 10:03 PM   #6
Billybeau1
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Check out Pacific East Aquaculture. They are a sponsor here and have the fluid you need.


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Old 05/09/2007, 09:56 AM   #7
Boomer
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Well, if you are going to be buying cal solutions for a TDS meter then one should it right.

Look at Table 2. You want WD-00653-16 . You then cal the meter to read 50.50 ppm as 442.

What is TDS?
http://www.reefkeeping.com/issues/20...ture/index.htm

http://www.4oakton.com/proddetail.as...7&value=detail

others

http://www.myronl.com/products/solutions.htm

http://www.hydroponicequipment.com/infopages/tds.shtml


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Old 05/09/2007, 11:05 AM   #8
Dr. Mac
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Thank you for your interest in our TDS calibration fluids. There seems to have been a misunderstanding regarding our shipping policy for dry goods, which I wanted to clear up. If you check out our shipping policy information you will see that shipping for dry goods orders is charged at cost, and these orders are not subject to the $10 box charge or the $38.99 shipping charges. The program that takes orders for us unfortunately adds these charges automatically at checkout, which is one of the reasons why we do not actually charge your credit card until the order is shipped and we have confirmed all relevant charges with you.

Hope that clears things up for you, and we look forward to doing business with you in the future.

Becky Severn
Pacific East Aquaculture


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Old 05/09/2007, 02:16 PM   #9
spankey
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Ah, Thanks Becky, that makes sense now. I will be ordering it shortly.




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Old 05/10/2007, 07:58 PM   #10
Buckeye Hydro
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We have 342 ppm, 800 ppm, and 1382 ppm calibration fluid.

Russ @ BFS


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