help with calibrating a ph meter

[Tj51]

I got a PH-025 ph meter for X-mas with no manual so I have no idea where to calibrate this. anyone have one of these?

Thx

Tj

 

[DaveJ]

Does it have a calibration screw anywhere?

 

[Tj51]

yes, but i cant figure out where the screw is

 

[Tj51]

sorry, it has the screwdriver, but I can't locate the screw

 

[washingtond]

Where did you get your new meter?

 

[Tj51]

X-mas gift I think that my kid bought it off ebay. It has a 2 page card that just says to use the screwdriver to calibrate, but it doesn't show where the calibration screw is

 

[DaveJ]

Does it have have a battery slot?? It might be in there. Or any rubber pads etc?? Might be under them. Close ups may help.

 

[Tj51]

it mentions the battery slot; however, when i take the cover off, all I can see if the 4 batteries......no screws

 

[washingtond]

Have you tried the manufacture's website?

 

[Tj51]

@washingtond wrote:

yes, no manuals, but I did email them (Hong Kong)

 

[rckrzy1]

There is a hole right above where a dc adapter would plug in on the right side, which is above the cable for the probe.

There a picture half way down on the right.

http://cgi.ebay.com/Digital-pH-Meter-Aquarium-Tester-Adaptor-solutions-c_W0QQitemZ250344776528QQihZ015QQcategoryZ20754QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

 

[Tj51]

Thanks Adam!

I knew you sold one on here once so you'd be da man.

Thx all for the suggestions

Tj

 

[rckrzy1]

@tj51 wrote:

I also bought a lifetime supply of batteries so let me know if you need a set. Which will happen when you forget to turn it off often.