I did a test yesterday with two different HI-713, my HI-774 and two different waters (from coral system 1 at the Maritime Museum and my home tank)
One of the HI-713 have been used as a reference tool to at least 50 different TRITON ICP tests and have normally nail the figures. The other HI-713 is a rather new meter and the HI-774 is mine that give 0.1 ppm when TRITON ICP report lower than 0.02
With the water from coral system 1 I read (with my way of doing the tests) 0.02 ppm for the older HI-713, 0.04 from the new HI-713 and 0.1 pmm from my HI-774.
The water from my home aquarium reads 0.02, 0.03 and 0.08 with respective meter.
@Sallstrom - who have done the most comparisons with the old HI-713 and TRITON ICP tests - read 0 with the old HI-713 and 0.07 with mine HI-774 (my aquarium water)
This indicate that my gut feelings (that I had a low nutrition problem in spite of the fact that my HI-774 meter show around 0.1 ppm PO4) probably are right. at least - I´m going to act like a read of 0.1 can mean 0 with my HI-774. I have contacted Hanna in order to get information if I have a interference from the high Si concentrations in both water (around 0.12 and 0.24 ppm)
Sincerely Lasse
One of the HI-713 have been used as a reference tool to at least 50 different TRITON ICP tests and have normally nail the figures. The other HI-713 is a rather new meter and the HI-774 is mine that give 0.1 ppm when TRITON ICP report lower than 0.02
With the water from coral system 1 I read (with my way of doing the tests) 0.02 ppm for the older HI-713, 0.04 from the new HI-713 and 0.1 pmm from my HI-774.
The water from my home aquarium reads 0.02, 0.03 and 0.08 with respective meter.
@Sallstrom - who have done the most comparisons with the old HI-713 and TRITON ICP tests - read 0 with the old HI-713 and 0.07 with mine HI-774 (my aquarium water)
This indicate that my gut feelings (that I had a low nutrition problem in spite of the fact that my HI-774 meter show around 0.1 ppm PO4) probably are right. at least - I´m going to act like a read of 0.1 can mean 0 with my HI-774. I have contacted Hanna in order to get information if I have a interference from the high Si concentrations in both water (around 0.12 and 0.24 ppm)
Sincerely Lasse
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