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rob3000
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Join Date: Jun 2009
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What's the Difference Between FTUs and NTUs?

06/17/2009 10:36 AM

I have a turbidity meter which after calibration reads 122 FTU's but when the sample is analyzed in the lab it gives a result of 24 NTU's. The lab uses a machine that only gives NTU readings and the sensor and controller out on the plant can't be configured to read NTU's.

What is the difference between the two and is there a calculation that can be done to convert the readings??? Anybody got any ideas
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Mikerho
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#1

Re: What is the difference between FTU'S and NTU's?

06/17/2009 11:22 AM

Hi rob3000,

Check here.

It says that NTU and FTU are the same and can be used interchangeably. Something is up with one or both of your meters.

Mike

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langyaw
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#4
In reply to #1

Re: What is the difference between FTU'S and NTU's?

06/18/2009 3:07 AM

succinct. GA there!

the reading discrepancy between the 2 meters is so wide, methinks it is best to get a 3rd meter to determine which is giving the right reading.

1 FTU (Formazine Turbidity Unit) = 1 NTU (Nephelometric Turbidity Unit)

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Anonymous Poster
#8
In reply to #4

Re: What is the difference between FTU'S and NTU's?

06/21/2009 9:17 AM

I HAVE THE SAME PROLEM IN MY LAB >
THE QC SAMPLE NEVER READ CORRECT THE RESULT HAS SHIFFT UP ALWAYS
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flynnstar
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#6
In reply to #1

Re: What is the difference between FTU'S and NTU's?

06/18/2009 8:15 AM

Thanks for the brief- Handy reference-
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Mikerho
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#7
In reply to #1

Re: What is the difference between FTU'S and NTU's?

06/18/2009 9:02 AM

Thanks guys!

Mike

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Anonymous Poster
#2

Re: What's the Difference Between FTUs and NTUs?

06/17/2009 4:27 PM

What do these acronyms stand for?
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Mikerho
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#3
In reply to #2

Re: What's the Difference Between FTUs and NTUs?

06/17/2009 5:31 PM

Hello Guest,

Did you read my earlier post? The answer to your question is only a click away!

Mike

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rob3000
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#5
In reply to #3

Re: What's the Difference Between FTUs and NTUs?

06/18/2009 5:41 AM

Thank you for your replies, it all seems much clearer now. One of the meters must deffinately be incorrect. Thanks
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