[karl]

just been and ordered one of these

http://www.hannacan.com/PDF/brochures/HI71...e_CheckerHC.pdf

looks like a good bit of kit simple and accurate unlike all the other phosphate kits and their is no room for user error as such lol

so we will see how it compairs against the rest of the kits like the d&d etc

[dave14]

Pleased with mine

http://www.internati...?showtopic=6467

good to see they are now available in the uk

[karl]

dave14, on Apr 27 2010, 09:00 PM, said:

Pleased with mine

http://www.internati...?showtopic=6467

good to see they are now available in the uk

yer was a shock when i saw the price thought it was a typo lol

should be here tomorrow or thursday so i can go and play lol

they are talkign about making a nitrate unit as well at a similar price also the iodine one looks like a possible future purchase


the only thing i am reading that is negative is the time delay on them after the test of about 10 secs lol

[pt1000]

Who's the stockist in U.K

[Matt G]

You can order directly from hanna http://www.hannachec.../phosphate.html

[chriss]

Matt G, on Apr 28 2010, 09:36 PM, said:

You can order directly from hanna http://www.hannachec.../phosphate.html

I'm surprised the uk price is so good, might get one myself.

[ChrisR]

Yep placed an order on Monday for one of these, bargain at 39.99.

[Matt G]

Note that price is excluding vat and get in before they stop free delivery otherwise delivery is £12 which is why I ordered 2 x 25 test refills with it. Came to £65 all together.

[ChrisR]

yep stuck the refills on the same order as well

[karl]

i bought mine from coralreefuk for £59 including 25 regents and postage

this is info direct from hanna uk
right their is a little difference and dont buy from the states as the warranty isnt covered over here it will have to be sent back to the us for repairs not too sure why

also the new vesion does not come with a black cap as that was the prototype they made as you will notice looking at the hanna site link posted above (but the states still show the cap even if it isnt supplied with one) and the cap wouldnt fit with the new version the lid wouldnt close properly but if you have the cap version you need to use it

also the uk version doesnt have the same switch off system when you have to mix the regent their is no time limit as you have the option to leave it out of the unit for the 3mins and just press the little button instead of hold it in altho the 10 second thing at the end of the test still stands

hanna have asked for feedback into what we would like to be covered with this sort of device as well they do have a iodine one + a nitrate unit on its way but again the uk company will not cover the warranty if it was a states purchase

[Dav]

i see they measure to 0.04mg/l( +/- 4%)
but isn't that around 0.04 ppm( give or take 0.0001)
i think that is the conversion if used in RO, salty water maybe different if it is, can someone post it up

so my question, what is more accurate?
D&D test kit or a hanna phosphate checker?

really want 1 of these also, at £39.99, a bargain
but has anyone compared with a d&d test kit

cheers
dav

p.s - i suppose, if you get a high, reading you could just use the d&d test kit
to get a reading between 0 and 0.04 ppm
i can see one of these comin my way lol

p.s.s - just realised it's accuarcy is +/- 0.04 mg/l and test from 0 - 2.5 mg/l
and reads in 0.01 increments, ignore the orginal waffling at the start of the post

[karl]

Dav, on Apr 29 2010, 05:01 PM, said:

i see they measure to 0.04mg/l( +/- 4%)
but isn't that around 0.04 ppm( give or take 0.0001)
i think that is the conversion if used in RO, salty water maybe different if it is, can someone post it up

so my question, what is more accurate?
D&D test kit or a hanna phosphate checker?

really want 1 of these also, at £39.99, a bargain
but has anyone compared with a d&d test kit

cheers
dav

p.s - i suppose, if you get a high, reading you could just use the d&d test kit
to get a reading between 0 and 0.04 ppm
i can see one of these comin my way lol

p.s.s - just realised it's accuarcy is +/- 0.04 mg/l and test from 0 - 2.5 mg/l
and reads in 0.01 increments, ignore the orginal waffling at the start of the post

that is the same accuracy rating of the more expensive units which is better that mercks 0.07, merc is the company that makes the d&d phos kit

but i have spoken to hanna and i have spoken to d&d also spoken to merck not one of them can tell me the accuracy of the regent type test kit, d&d tho cam back with

Quote

Karl
The accuracy of a photometer is only as good as the chemistry that causes the colour change that the photometer measures.
This is the part that people ignore when using such technology.

Our test kits are laboratory grade and give results that are meaningful to the hobbyist within the ranges that you would need to control within your reef aquarium which are easy to read and distinguish.

I do not know how accurate the colour change is on the kits with the photometer and you may be able to distinguish with great accuracy a result - I do not know.

Sorry I cannot be of more help
Regards
Stuart

[Dav]

karl, on Apr 29 2010, 06:11 PM, said:

that is the same accuracy rating of the more expensive units which is better that mercks 0.07, merc is the company that makes the d&d phos kit

but i have spoken to hanna and i have spoken to d&d also spoken to merck not one of them can tell me the accuracy of the regent type test kit, d&d tho cam back with

cheers for that

can see me getting one of these soon

dav

[dave14]

I've had it confirmed by hanna that the reagents for the more expensive meter are the same, which works out more economical as they are packed in 100's

I got mine from the states and it has the black cap and countdown timer, not worried about the warranty as it only cost me £42 incl 25 reagents

[karl]

dave14, on Apr 29 2010, 10:34 PM, said:

I've had it confirmed by hanna that the reagents for the more expensive meter are the same, which works out more economical as they are packed in 100's

I got mine from the states and it has the black cap and countdown timer, not worried about the warranty as it only cost me £42 incl 25 reagents

they also come in 300's as well direct from hanna which drops the price to 23p per test

[Matt G]

Out of interest do they have best before date on them? Mine hasn't turned up yet to find out.

[dave14]

Matt G, on Apr 30 2010, 11:50 AM, said:

Out of interest do they have best before date on them? Mine hasn't turned up yet to find out.

Yes they do, mine are showing 03/2013

[karl]

as do mine show 03/2013

[TrevC]

Bought one of these last month along with the 25 extra sachets, and have to say it's easy to use and there is no confusion over the reading.
No more trying to guess with the Salifert kit.

Took it to Jason’s for a chat with Linds......

My tank had measured 0.00, as did the SPS tank at Jason’s.

Then Linds asked the all important question....

"How accurate is it?"

Looking at the bumf that comes with it revealed + or - 0.04 ppm, + or - 4% of reading @ 25 C.

So a reading of 0.00 could actually be between 0.00 and 0.0416.

Sounds a bit high!

The Salifert test is difficult to read at or below 0.03 ppm, in fact unless you have super sensitive eyes it's difficult until you get to 0.1 !

We then had a look at the D & D test kit. There are 2 different scales here, one measure Phosphate PO4 (the larger numbers, bottom row) and the other measures Phosphate-Phosphor (top row).

The D & D kit also quotes mg/l....not to worry it's a simple 1:1 to conversion to ppm (unless you go down to 6 decimal places )

Big thing to keep in mind here is that the phosphate-phosphor test is about 1/3 the reading of the phosphate test (same as the Salifert test kit).

The Hannah tests for PO4 so a reading of 0.0416 ppm equates to 0.01386 ppm of Phosphate-phosphor.


Moving on we then tested the LPS system which read 0.02 ppm with the Hannah.
Equates to 0.00666 of phosphate-phosphor.
It was actually possible to see a hint of blue in the test vial.

Not being a Chemist, and it's been quite a few years since setting fire to the gas taps in a chemistry lab......

What is the relationship between phosphate (PO4) and phosphate-phosphor (PO4-P)????

[Matt G]

Will be interested to see the answer to that, as they now do a phosphorus checker which measures ppb (billion) and according to the blurb was designed specifically for the marine aquarium.

http://www.hannachec...phosphorus.html