Cheap But Reliable pH Meter

Renfro

Well-Known Member
Would each individual color be a different color of the spectrum for her? Does colorblindness actually diminish the "amount" of colors one can see, or just change the colors you do see for other colors of the spectrum? Just wondering if, hypothetically, you could still use such a color drop system except for the color blind person 4.0 being "red" would be "whatever the fuck color they see". Maybe this doesn't make sense, and I'm sure if way over simplified.
HEr issues are with reds, I dunno what it looks like to her. I do know a color blind crane operator, technically illegal but he got contacts that let him "see" red and green. So he's ok.
 

mordynyc

Well-Known Member
I have this one seems to work for 6 months to a year. but the new one we saw on market with replaceable multi probe is the one that's interesting to see how it holds up:


P.S
TDS meters are metal probes all cheap and reliable IMO I have RO and distilled to test e z shit no worries 2 year old almost cheapo TDS meter with the backlit LED all the same from china.
 

Catpotwoman

Well-Known Member
I was worried about ordering one of these cheap ones as a new grower. Thanks for the rec. Ordered it online and glad to save the start up cost.
 

Catpotwoman

Well-Known Member
As a new grower you should be worried about paying too much for something you don't need too ;)
I ordered pH adjuster maybe half an hour before I read that it wouldn't hurt the plant to do it for free with vinegar and baking soda. The worry is real.
 

TintEastwood

Well-Known Member
TDS pens...

I suspected my cheap pen was off. (Reading 554)
Bought 2 new ones.
The HM on the left is correct. (And able to be calibrated)
20191018_204045_HDR.jpg
 

2com

Well-Known Member
I just have to add that I had a bluelab truncheon for I'd say about a decade, before it finally stopped working. It was accurate and never needed calibration (there is no calibration).
For a new gardener, I'd suggest pH test drops - whether you buy a meter as well or not.
 

HashBucket

Well-Known Member
I just have to add that I had a bluelab truncheon for I'd say about a decade, before it finally stopped working. It was accurate and never needed calibration (there is no calibration).
For a new gardener, I'd suggest pH test drops - whether you buy a meter as well or not.
Right, I like to have a way to check against another source.

So, the choices are three:
- A good Ph pen, like BlueLab costs about $75
- A cheap Ph pen, costs about $15.
- A chemical test strip, or drops costs about $7.

I like to have at least two of the above in the garden. What happens the first time you're standing at the bucket and you check ph and it says 8. So you add down, and it says 8. So you add more down and it says 7.9 and you start thinking "WTH?" -- You need a second one to test the first one. And you may need a second one because you need to feed today and there you are.

So, what I have in my room is a good one, BlueLab and if I wonder how accurate it is I check it against another method (I actually have all three methods ...)

I had my BlueLab for 7 years before it quit working. But, I used it every day (often times more than once a day). I told a BlueLab rep that once and she said, "That's probably why it lasted so long."
 

HashBucket

Well-Known Member
I don't even consider pH drops kit an 'option' at this point. Haha. :)
Well, I don't either ... but I have used them as a 'spare tire'.
Or a way to check ...

Analog works accurately EVERY TIME.
And if it doesn't - it is for sure 'human error'.
 
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