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[imcosmokramer]

I'm always looking for faster ways to do test. hanna phosphate meter (http://reeftools.com/news/hanna-instruments-new-phosphate-po4-colorimeter/).

I just wish there was a good calcium probe. I know pinpoint has one, but it's not intended for continuous use, and must be calibrated all the time, in which case I may as well test with a kit.
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[littlesilvermax]

Only $40!!!!!!!!!!!!!!

Very interested to see how this works.

[fencer]

who is selling them ...Link???

[George]

I was looking at the meter on manufacturer's web site the other day. I almost pulled the trigger for one, but decided to hold on until a local shop carrying it to save some shipping charge. ;) (wink, wink at all sponsors here)
Here is a link for one of the vendors carrying the meter in the states:
http://www.tbaquatics.com/shop/hanna-instruments-checker-phosphate-photometer-preorder-742.html

[Borderjumper]

Im ready to buy one too :wink:

[kien]

I was looking at the meter on manufacturer's web site the other day. I almost pulled the trigger for one, but decided to hold on until a local shop carrying it to save some shipping charge. ;) (wink, wink at all sponsors here)
Here is a link for one of the vendors carrying the meter in the states:
http://www.tbaquatics.com/shop/hanna-instruments-checker-phosphate-photometer-preorder-742.html

+1 !! Please please get this in the stores! Otherwise you'll start seeing some massive group orders for these online soon! :biggrin:

[OceanicCorals-Ian-]

I am making an order with Hanna as I type this. We will do a small group discount if we get enough people here to commit. I will post CDN price as soon as I have it.

Ian

:mrgreen:

[George]

I am in for one if it's reasonably priced.

I am making an order with Hanna as I type this. We will do a small group discount if we get enough people here to commit. I will post CDN price as soon as I have it.

Ian

:mrgreen:

[corpusse]

I paid more then $200 for my digital phosphate meter...

[OceanicCorals-Ian-]

I am in for one if it's reasonably priced.


Okay, we have started a group buy thread in our sponsor forum, go ahead and add yourself to the list there.... They are already pretty cheap but we will see what we can do with the price...

Ian

[sphelps]

Only problem is the resolution and accuracy. From what I understand the goal in saltwater is to aim for a phosphate level below 0.05ppm so using this device doesn't really work for people in the right range, only those outside of it. However probably still better than most test kits so for $40, not too bad.

[fencer]

your right...my phosphates are below the bottom end of the tester

[wisesam]

I was wondering about the accuracy ±0.04 ppm (mg/L) ±4% of reading @ 25°C.
But that is the same Hanna's other more expensive unit.
So not sure what the difference is between the 2, but only the price.

[Reefer Rob]

It would be nice to have the accuracy explained for these meters. I take it to mean ±4% up to a maximum of ±0.04 ppm within the meter's range. An accuracy of ±0.04 ppm for a reading of 0.01 ppm would be... strange.

[Canadian]

This is the exact same resolution and measurement error as the more expensive unit. I've always found it funny that people have used them and touted them as the "holy grail" for phosphate testing and now people are claiming the measurement error is too high on this one. Evidently they weren't paying attention to the literature on their pricier model. The resolution of 0.01 and measurement error of 0.04 is totally reasonable. What it means is that you can only reasonably assume your phosphate is somewhere between 0.00 and 0.04 when you get a reading of 0.00. When you get a reading of 0.03 (typical targeted value) you can only assume you're somewhere between 0.07 and 0.00. If you have a reading of 0.10 then you can reasonably assume you're somewhere between 0.14 and 0.06.

[imcosmokramer]

This is the exact same resolution and measurement error as the more expensive unit. I've always found it funny that people have used them and touted them as the "holy grail" for phosphate testing and now people are claiming the measurement error is too high on this one. Evidently they weren't paying attention to the literature on their pricier model. The resolution of 0.01 and measurement error of 0.04 is totally reasonable. What it means is that you can only reasonably assume your phosphate is somewhere between 0.00 and 0.04 when you get a reading of 0.00. When you get a reading of 0.03 (typical targeted value) you can only assume you're somewhere between 0.07 and 0.00. If you have a reading of 0.10 then you can reasonably assume you're somewhere between 0.14 and 0.06.

well put!
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