Water test results with old and new water filter

I have been doing AG brewing for 2 years and got to the point to look into my water profile.
I use a water filter I get from Lowes, pic below, and decided to stick with it after tasting samples with and without the filter. The filter removed the nasty chloride taste, so I thought it would be a good thing to not have that in my beer.
Anyways, I replace my filter as recommended, every 6mo, and decided to order a water test from Ward Lab.
Sample1 with a 6mo old filter
Sample2 with a brand new filter (got 5 gals of water thru it before taking the sample).
The results came out today and I'm very surprised.
Look at the red values, a huge change from the old to the new filter.
Shold I be concerned? What you guys think?
I'm clueless about water chemistry.

Something is amiss. That filter is only supposed to remove sediment and chlorine, I don't believe it would alter water chemistry that much.

I'm sure someone with a bigger brain can explain this.

Were these samples taken at the same time? You took a sample, changed the filter, ran 5 gallons through it, took sample 2?

JoMarky said:

Were these samples taken at the same time? You took a sample, changed the filter, ran 5 gallons through it, took sample 2?

Click to expand...

Correct

Ask Ward labs for your money back. They have given you two test results both of which show the same conductivity but differ in anion and cation content by a factor of 40. The ICP machine was busted.

Help me out guys!
Should I have sent a 3rd sample without any filter?
Dammed! Another 25 bucks :-( + shipping

ajdelange said:

Ask Ward labs for your money back. They have given you two test results both of which show the same conductivity but differ in anion and cation content by a factor of 40. The ICP machine was busted.

Click to expand...

is that right? Like I said, I'm clueless.
I haven't paid then yet.
I could resend the samples and ask then to redo the test, at no extra charge. Not sure it will fly.
I would even send a 3rd sample without any filter.

nilo said:

is that right? Like I said, I'm clueless.
I haven't paid then yet.
I could resend the samples and ask then to redo the test, at no extra charge. Not sure it will fly.
I would even send a 3rd sample without any filter.

Click to expand...

It should fly, as the results they sent you are clearly wrong. Tell them the samples were the same source filtered with different carbon block filters and ask them to explain the results (specifically that the TDS and conductivity tests were identical as expected but the remaining tests were wildly different).

I have sent Ward some questions(based on you comments) and asked for a retest. Let's see what happens.

Ward recognized they had a human error and did a new test, results below.
What about now, makes sense?

Yes, it makes sense. The mineral composition of the two should be identical within parameter measurement tolerance.

Looks like your "old" filter is working just fine!