Phosphate

KLBJR · 05/25/2005, 05:33 PM

which filter gets out the po4's is it the membrane or di . i am trying to get all my po4's out but can't seem to get below .02 from my ro/di unit using my Hanna photo meter. i am using the SP-DI-SOLID for my di cartridge!

thanks, ken.

SpectraPure · 05/26/2005, 05:51 PM

The membrane should remove up to 98% of the PO4 and the DI should pick up the rest.

I'm not sure what a Hanna photo meter is and I'm not sure what the SP-DI-SOLID cartridge is, without knowing which of our distributors is renaming which one of our carts. (OR if it is even a genuine SpectraPure product!)

Scott
SpectraPure, Inc.

KLBJR · 05/26/2005, 06:28 PM

ok the part number i found is DI-SB-10. is this the one i need to be using for the best po4 removal?

SpectraPure · 05/31/2005, 02:53 PM

I found out what a Hanna photometer is. Please check the lower limit ability of that tester. I don't think it can go all the way down to zero. 0.020ppm is 20 parts per billion, which is considered laboratory-grade water quality. The DI-SB-10 is the best single cartridge configuration we offer. The only thing better is our two-cart system, which is a DI-SF-CI-10 followed by a DI-AR-CI-10.
Until you can prove to yourself that your tester can resolve less than 20 ppb, I think you are OK.

Scott
SpectraPure, Inc.

KLBJR · 05/31/2005, 07:15 PM

ok scott thanks, here are the numbers of the meter i have!

Specifications:
Range 0.00 to 2.50 mg/L
Resolution 0.01 mg/L
Accuracy (@20Ã‚Â°C/68Ã‚Â°F) Ã‚Â±0.04 mg/L Ã‚Â±4% of reading
Typical EMC Deviation Ã‚Â±0.01 mg/L
Light Source Light Emitting Diode @ 890 nm
Light Life Life of the Instrument
Light Detector Silicon Photocell
Battery Type / Life 9 Volt Battery/ Approximately 300 tests
Environment 32 to 122Ã‚Â°F (0 to 50Ã‚Â°C); RH 95%
Dimensions 7.1 x 3.3 x 1.8" (180 x 83 x 46 mm)
Weight 10oz. (290 grams)

SpectraPure · 05/31/2005, 08:13 PM

Not to be picking nits or trying to give myself an out, but the relevent spec here is the accuracy being +/- 0.04 ppm. That means your 0.02 reading is as likely to be 0.00 as it is to be 0.06. Temperatures other than 68 deg F. will alter the reading.

Regardless, it looks like a nice piece of test gear and should serve you well.

Scott
SpectraPure, Inc.

KLBJR · 06/01/2005, 04:19 PM

yes i know their is some room for error but i use to get 0.00 reading and now it is 0.02 to 0.03. i just know something has changed just trying to keep it as low as possible. thanks for your reply, KEN.

05/25/2005, 05:33 PM	#1
KLBJR Registered Member Join Date: Apr 2003 Location: NAPLES,FL. Posts: 145	Phosphate which filter gets out the po4's is it the membrane or di . i am trying to get all my po4's out but can't seem to get below .02 from my ro/di unit using my Hanna photo meter. i am using the SP-DI-SOLID for my di cartridge! thanks, ken.

05/26/2005, 05:51 PM	#2
SpectraPure RC Sponsor Join Date: Jun 2003 Posts: 3,019	The membrane should remove up to 98% of the PO4 and the DI should pick up the rest. I'm not sure what a Hanna photo meter is and I'm not sure what the SP-DI-SOLID cartridge is, without knowing which of our distributors is renaming which one of our carts. (OR if it is even a genuine SpectraPure product!) Scott SpectraPure, Inc. __________________ *Innovators in water technology.* Since 1985!

05/31/2005, 02:53 PM	#4
SpectraPure RC Sponsor Join Date: Jun 2003 Posts: 3,019	I found out what a Hanna photometer is. Please check the lower limit ability of that tester. I don't think it can go all the way down to zero. 0.020ppm is 20 parts per billion, which is considered laboratory-grade water quality. The DI-SB-10 is the best single cartridge configuration we offer. The only thing better is our two-cart system, which is a DI-SF-CI-10 followed by a DI-AR-CI-10. Until you can prove to yourself that your tester can resolve less than 20 ppb, I think you are OK. Scott SpectraPure, Inc. __________________ *Innovators in water technology.* Since 1985!

05/31/2005, 08:13 PM	#6
SpectraPure RC Sponsor Join Date: Jun 2003 Posts: 3,019	Not to be picking nits or trying to give myself an out, but the relevent spec here is the accuracy being +/- 0.04 ppm. That means your 0.02 reading is as likely to be 0.00 as it is to be 0.06. Temperatures other than 68 deg F. will alter the reading. Regardless, it looks like a nice piece of test gear and should serve you well. Scott SpectraPure, Inc. __________________ *Innovators in water technology.* Since 1985!

05/26/2005, 06:28 PM	#3
KLBJR Registered Member Join Date: Apr 2003 Location: NAPLES,FL. Posts: 145	ok the part number i found is DI-SB-10. is this the one i need to be using for the best po4 removal?

05/31/2005, 07:15 PM	#5
KLBJR Registered Member Join Date: Apr 2003 Location: NAPLES,FL. Posts: 145	ok scott thanks, here are the numbers of the meter i have! Specifications: Range 0.00 to 2.50 mg/L Resolution 0.01 mg/L Accuracy (@20Ã‚Â°C/68Ã‚Â°F) Ã‚Â±0.04 mg/L Ã‚Â±4% of reading Typical EMC Deviation Ã‚Â±0.01 mg/L Light Source Light Emitting Diode @ 890 nm Light Life Life of the Instrument Light Detector Silicon Photocell Battery Type / Life 9 Volt Battery/ Approximately 300 tests Environment 32 to 122Ã‚Â°F (0 to 50Ã‚Â°C); RH 95% Dimensions 7.1 x 3.3 x 1.8" (180 x 83 x 46 mm) Weight 10oz. (290 grams)

06/01/2005, 04:19 PM	#7
KLBJR Registered Member Join Date: Apr 2003 Location: NAPLES,FL. Posts: 145	yes i know their is some room for error but i use to get 0.00 reading and now it is 0.02 to 0.03. i just know something has changed just trying to keep it as low as possible. thanks for your reply, KEN.