which ph meter do you perfer?

Which ph meter do you guys perfer?
http://cgi.ebay.com/HANNA-HI-98107-...emQQptZLH_DefaultDomain_0?hash=item3a4fc94ae3 or

http://cgi.ebay.com/HANNA-HI-98103-...emQQptZLH_DefaultDomain_0?hash=item5633815ebe

banknchips said:

Which ph meter do you guys perfer?
http://cgi.ebay.com/HANNA-HI-98107-...emQQptZLH_DefaultDomain_0?hash=item3a4fc94ae3 or

http://cgi.ebay.com/HANNA-HI-98103-...emQQptZLH_DefaultDomain_0?hash=item5633815ebe

Click to expand...

Hanna makes ones with ppm and e/c for a few bucks more, if your growing in hydro its worth it

Edit: the second one can not be put under water as its not water proof, the first one should be, the one I have with hanna is a ph/ppm and e/c its fully submersible

funny that you started this thread... i found on on ebay that was waterproof. It came with the calibration solution and batteries. ppm and ph meters are needed my friend.

I thied the Hanna gear but found it wanting. Especially the grow-check. Her is what I use and recommend.

http://cgi.ebay.com/HM-Digital-PH-2...emQQptZLH_DefaultDomain_0?hash=item45ee5ce25f

And for PPM/TDS I use this one:
http://cgi.ebay.com/HM-Digital-COM-...emQQptZLH_DefaultDomain_0?hash=item41462125b8

You can buy them once or buy a new one every grow or two.

Both have temp display, temp compensation, auto turn off and are factory calibrated but very easy to calibrate if needed later (like when I changed the batteries). Both have lasted me 4 grows with no sign of a problem

I use the first meter you linked banknchips: http://cgi.ebay.com/HANNA-HI-98107-...emQQptZLH_DefaultDomain_0?hash=item3a4fc94ae3

It works well, I haven't had any problems with it

HERE IS A GOOD SPOT TO GET .PH AND PPM METERS ....http://www.eseasongear.com/index.html

Can you tell me why you didn't like the hanna gro chek? I'm thinking I want a continuous monitor, because I know I am lazy, and will not take the time to do individual testing, and calibrate, and do all that stuff, it looks very complicated to me. I would prefer something that needs less maintenance. I have a ebb n gro with a 55 gal reservoir, wouldn't a continuous monitor be good for me?

fluffygrrrl said:

Can you tell me why you didn't like the hanna gro chek? I'm thinking I want a continuous monitor, because I know I am lazy, and will not take the time to do individual testing, and calibrate, and do all that stuff, it looks very complicated to me. I would prefer something that needs less maintenance. I have a ebb n gro with a 55 gal reservoir, wouldn't a continuous monitor be good for me?

Click to expand...

It sure would be good, stick the probes in the rez and your good to go

Laboratory grade. ie Thermo orion, Oakton and Hach off of eBay. Here is a very good one.

http://cgi.ebay.com/Hach-Sension1-p...emQQptZLH_DefaultDomain_0?hash=item3ca6a24e50

It retails new for about $445 to $470.

http://www.hach.com/hc/search.produ...UTNNVGt6Tnprek5pWm5kV1Z6ZEVKYVRsaEVNUT09Qg==|
or
http://www.hach.com/hc/search.produ...UTNNVGt6Tnprek5pWm5kV1Z6ZEVKYVRsaEVNUT09Qg==|

Either probe alone is worth more than most pH meters with probes used by most growers. ie Pin Point, Milwaukee, Hanna etc.

I use this one
http://www.hannainst.com/usa/prods2.cfm?id=028003
we have 2 at this time and one red one that is Ph only
I like it and think it is easy to work with but I have a question . I got a meter from my buddy . He gave me the 4.01 and 7.01 solutions . I calibrated it . But when I put it back in the 4.01 solution it read 4.05 . And the 7.01 reads 6.98 . Do I need to replace the eyes ? Or did I get water (from cleaning the meter between solutions ) in it and getting a bad reading ?

hey fatman
do any of these expensive meters work for continuos monitoring. i hate having to dig the meter out and stick it in the res then clean it after each use. im also somewhat dissolutioned by the cheaped meters and was looking for something more accurate but didnt know if these expensive ones were any better.

have used this one for over a year with no problems just use a bit ph buffer 7 to callibrate every few weeks cost me £40

Yes the better meters can have their probes left in the water in the same fashion as the monitors. Nearly all the professional model pH meters have a function where you just enter in how often you wish them to take a reading and they turn on automatically and take the reading, store it in memory, and turn back off. When you push the on button they then show the last reading and the time and date that it was taken. To see a record of recorded readings you just go to log and it gives you a list of readings with times and dates. If you buy, or recieve with a used meter the software disk you can also down then load all the data and make graphs, table, charts etc with the data. Or if you know how to program in basic you just write a simple program to down load the info into columns and then use that data with something like Micro Soft Excel. Nearly all of them do turn off by them selves after a few minutes of inactivity to save on batteries, however those models that accept an auxillary power input (wall outlet transformer) allow you to disable that function.

The meter I posted a link to is actually one of their cheaper models. It does not have an outlet to down load dat. It does not have an input allowance for a transformer so it turns off after 15 minutes. It also does not have auto program features. Basically it is just a very accuratte pH meter (0.001 resolution)with automatic temperature compensation, that also displays Temperature readings and ORP (mV) readings. It is also water proof to IP167 standards and submersible to a depth of 1 meter without leakage.

A meter with all the other features would start at almost double the price of the one shown.