So, this morning at 8am I collected 3 sample bottles of water from same depth (about 18") and started on a trek to get 3 different ,independent, tests to see how they match with my testing for the last 2 weeks. I fully expected SOME variation but did not expect what I got and would welcome any input.
I will list the results below including mine at the same time I collected these sample. All tests were done with in 3 hours of collection .
I use 3 different test (yes I am crazy like this...I like data) I have a chl & ph drop kit(Clorox brand), a Lamotte Color pro 7 digital, and the test strips the pool builder gave me (this is a new pool and this is the 1st official tests done since SWG installed 2 weeks ago).
for the most part, all 3 test I have at home are pretty close . I do all of them at the same time. The most variance is always the alk and CYA but not more than 20%.
So with that said I will post the Lamotte results since they are expressed in numeric form.
{My Test: } { STORE A (MANUAL TEST) } { STORE B (MANUAL ) } { STORE C (DIGITAL TESTER)}
FC= ( 4.1 ) ( 5 ) ( 3 ) ( .34)
TC= (4.24 ) ( 5 (.02 DIFF) ) ( * ) (1.97)
PH= (8.1 ) (8) ( 7.8 ) ( 7.6)
ALK = ( 73) (200) (75) ( 60)
CH= ( 445) ( 460 ) (365 ) ( 370)
CYA= (69 ) ( 90) ( 45) ( 15)
SALT = (3670) (HAND HELD SLAT METER) (3000) (3300 ) ( none)
Store A & B are chains and store c is a local store that installs spas and above ground pools only if any of that matters .
I have not spent much time evaluating this but it appears that almost every test has an outlier result that makes no since. One of my questions is , which should i use for my monthly testing results for warranty stuff?
Another is ,for my sanity, which one should I use to add chemicals by? I am leaning towards my test since i know "I" care about it AND I followed proper procedure for each test.
I am more than happy to by the TFP test kit but truth is I have trouble with color distinction in my test kits at least.
Any input would be appreciated
Thanks
Neil
I will list the results below including mine at the same time I collected these sample. All tests were done with in 3 hours of collection .
I use 3 different test (yes I am crazy like this...I like data) I have a chl & ph drop kit(Clorox brand), a Lamotte Color pro 7 digital, and the test strips the pool builder gave me (this is a new pool and this is the 1st official tests done since SWG installed 2 weeks ago).
for the most part, all 3 test I have at home are pretty close . I do all of them at the same time. The most variance is always the alk and CYA but not more than 20%.
So with that said I will post the Lamotte results since they are expressed in numeric form.
{My Test: } { STORE A (MANUAL TEST) } { STORE B (MANUAL ) } { STORE C (DIGITAL TESTER)}
FC= ( 4.1 ) ( 5 ) ( 3 ) ( .34)
TC= (4.24 ) ( 5 (.02 DIFF) ) ( * ) (1.97)
PH= (8.1 ) (8) ( 7.8 ) ( 7.6)
ALK = ( 73) (200) (75) ( 60)
CH= ( 445) ( 460 ) (365 ) ( 370)
CYA= (69 ) ( 90) ( 45) ( 15)
SALT = (3670) (HAND HELD SLAT METER) (3000) (3300 ) ( none)
Store A & B are chains and store c is a local store that installs spas and above ground pools only if any of that matters .
I have not spent much time evaluating this but it appears that almost every test has an outlier result that makes no since. One of my questions is , which should i use for my monthly testing results for warranty stuff?
Another is ,for my sanity, which one should I use to add chemicals by? I am leaning towards my test since i know "I" care about it AND I followed proper procedure for each test.
I am more than happy to by the TFP test kit but truth is I have trouble with color distinction in my test kits at least.
Any input would be appreciated
Thanks
Neil
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