View Full Version : Checkers

06/06/2012, 06:19 AM
Can anyone please send me the model number of their Hanna Phosphate and Calcium checker..??

06/06/2012, 06:28 AM
HI 713 phosphate HI 758 CALCIUM

06/06/2012, 06:33 AM
Thanks .

Randy Holmes-Farley
06/06/2012, 11:04 AM
I would get the Hanna 736 for phosphate, not the Hanna 713, if you want such a device. The 736 is more accurate and tests a bit lower. IMO the 713 is not that useful with uncertainty of +/- 0.04 ppm. The 736 has uncertainty of about +/- 0.015 ppm.

06/06/2012, 12:02 PM
Hanna India send me these:

Phosphate Checker
Phosphate low range Checker HC® colorimeter: Range 0.00 to 2.50 ppm (mg/L)
Rs. 2,200
0.00 and 1.00 ppm standards (phosphate)
Rs. 520
Phosphate, low range, ascorbic acid method, reagents for 25 tests
Rs. 280

Phosphate High Range Checker.
Phosphate HR Checker HC, 0.0 to 30.0 ppm (mg/L)
Rs. 2,200
Phosphate HR Checker HC calibration checking set (0.0 and 15.0 ppm phosphate)
Rs. 520
Phosphate HR Checker HC reagents for 40 tests (Phosphate HR)
Rs. 290

Phosphorus Checker Ultra Low Range
Phosphorus ultra low range Checker HC® colorimeter: Range 0 to 200 ppb
Rs. 2,200
0 and 100 ppb standards (phosphorus)
Rs. 520
Phosphorus, ultra low range, ascorbic acid, reagents for 25 tests
Rs. 250

Phosphorus Checker High Range
Phosphorous Checker HC Range 0.0 to 15.0 ppm
Rs. 2,200
Checker HC calibration checking set (0.0 and 7.5 ppm phosphorus)
Rs. 520
Checker HC reagents for 40 tests (Phosphorus HR)
Rs. 290

Randy Holmes-Farley
06/06/2012, 12:20 PM
It's the 736 you want. Then convert the values to ppm phosphate from ppb phosphorus by multiplying by 3.1 and dividing by 1000. :)

06/06/2012, 03:40 PM
Thanks Randy :) I will be dumping the rocks in drums tomorrow for the Lanthanum treatment.. Still havent got any lanthanum as of yet.Temperature here in calcutta is about 40 degree celcius, still will try to visit the chemist store tomorrow. Will you keep guys posted on the Lanthanum Chloride Thread.

Randy Holmes-Farley
06/06/2012, 04:35 PM

Good luck. :)

06/20/2012, 05:53 PM
Randy. Just used the HI713 for the first time on a 3 week old tank. Got a reading of .14.
Do you think I am testing wrong?

06/20/2012, 11:07 PM
That reading seems possible. Often, there's enough organic debris in live rock and dry rock to cause an initial phosphate spike. If you're worried, you could try some water changes, but I probably would wait until the tank settles down.

06/21/2012, 08:08 AM
Well crap, didn't know there were 2 types of checkers. BRS sent me the 715. Where do you get the 736?

Randy Holmes-Farley
06/21/2012, 11:40 AM
If you search on google shopping you'll find many places sell it. :)

06/21/2012, 11:51 AM
Yep, well now I'm annoyed. haha. Do they use the same reagent? I bought a 20 pack along with it.