Ph Difference Of 2 Test Kits

[Spurry]

well i was running out of ph test i have a nutrafin kit most have run out so im getting the api ones to replace them
anyway they both read different to me the API is on the left at 7.2ppm and the nutrafin one is on the right at 6.5ppm although looks a little darker due to camera light
what test would you go by please..

cheers

 

[Prime Ordeal]

This shows the problem with hobby test kits.

I reckon any kit has an inaccuracy of at least plus or minus 0.2, so if one is high and one low that accounts for most of the discrepancy. The real level is probably somewhere between the two, so 6.8ish.

The first thing to do is check the expiry dates.

Then I'd take a sample to the LFS to be checked.

What's your KH?

 

[Spurry]

This shows the problem with hobby test kits.

I reckon any kit has an inaccuracy of at least plus or minus 0.2, so if one is high and one low that accounts for most of the discrepancy. The real level is probably somewhere between the two, so 6.8ish.

The first thing to do is check the expiry dates.

Then I'd take a sample to the LFS to be checked.

What's your KH?

My LFS use api nutrafin and jbl, so there all as you say hobby test kit
My KH is 2/3 Dkh

where is the expiry date on api test kits

Edit: looking on the net i found this

my bottle lot number is 28A0511 so it was made in may 2011

and i found this for api test kits

Test Solutions Expiration Date


Ammonia Test Solution # 1 - 3 Years
Ammonia Test Solution # 2 - 3 Years
High Range pH Indicator Solution - 3 Years
Nitrate Test Solution # 1 - 3 Years
Nitrate Test Solution # 2 - 3 years
GH Test Solution - 3 Years
Calcium Test Solution #1 - 3 Years
Calcium Test Solution #2 - 3 Years
Phosphate Test Solution #1 - 3 Years
Phosphate Test Solution #2 - 3 Years
Copper Test Solution - 3 Years
KH Test Solution - 4 Years
Nitrite Test Solution - 4 Years
Fresh Water pH Indicator Solution - 5 Years

 

[Prime Ordeal]

It doesn't really matter that the LFS use hobby kits, all you're after is a concensus as to the 'most likely' true reading.

The Nutrafin use-by-date is printed on the outer box - which you've probably binned by now?

The real answer, of course, is to invest in a low end pH meter if it really concerns you.

 

[Spurry]

It doesn't really matter that the LFS use hobby kits, all you're after is a concensus as to the 'most likely' true reading.

The Nutrafin use-by-date is printed on the outer box - which you've probably binned by now?

The real answer, of course, is to invest in a low end pH meter if it really concerns you.

the nutrafim box is in the bin but is less than 12mth old
it does not really concern me i just wondered what people would go by, im not going by all the LFS at £5 a go lol
i would say the api one is the better test so as you said its going to be 6.8/7ppm

so im happy with that

 

[Joshwainwright]

Personally I'd just call it 7 seeing as I don't tend to keep sensitive fish. But as suggested it would be good to check the expiry dates

 

[Spurry]

Personally I'd just call it 7 seeing as I don't tend to keep sensitive fish. But as suggested it would be good to check the expiry dates

they dont actually have a expiry day, they have a batch date when it was made on, research on the net says PH is good for 3 years

 

[Joshwainwright]

they dont actually have a expiry day, they have a batch date when it was made on, research on the net says PH is good for 3 years

I stand corrected

 

[Spurry]

and the tap water is even more apart 6.0 and 7.2 on the api
think i will drop some water in a p@h as there one is free just see what they get

 

[Spurry]

Then I'd take a sample to the LFS to be checked.

called at P@H today with some water as there test is free and the got same as me

ammonia 0ppm
nitrite 0ppm
nitrates 10ppm
Ph 7ppm

so i guess im going with the API kit as being the closest to being right

 

[Joshwainwright]

Because obviously API is the way forward

 

[Spurry]

Because obviously API is the way forward

I'm not sure about that, but I used api 5 yrs ago when I had my old tank
I just for got the name and got a nutrafin one when I re setup