How to calibrate Hanna brand pH test pen?

[ervine]

Hi guys,

Believe it or not, I bought a 2nd/3rd/maybe more Hanna pH test pen from the flea market along Kelantan Lane at a price of.....

*DRUMROLL*

$3 bucks!!!!!!!!!! ($4.50 with batteries)

Yah well anyway I suspect it's seriously screwed, but it does give a reading.. only the reading isn't exactly constant esp after I dip in in saltwater then freshwater and back...

I know one of the dials at the back tunes it, so I just get pH 7.0 calibrating solution, dip it in and turn it..

But what does the other button do?

Also if I someone can tell me the instructions on how to use it I would be very grateful..

Thanks...

[dradttg]

That is dirt cheap. I paid $65 for mine.

I will check my manual and update you tonight.

[Tanzy]

Any pH probe is only accurate for one year. I would suggest that you throw that test pen away.

[ervine]

Any pH probe is only accurate for one year. I would suggest that you throw that test pen away.

Is that so? Hm... then in that case buying a $65 bucks pen would be pretty much a one year investment??

[BarraCudaTM]

I got my hanna pH meter for only $38 at clementi blk 328

[nicky30092002]

I got my hanna pH meter for only $38 at clementi blk 328

I got my hanna pH meter for only $38 at clementi blk 328

the one u pasted on ur tank??? right corner??? 38 ?? sure ??

[SharkBait]

Ph pens are a waste of money

[ervine]

Ph pens are a waste of money

Care to explain?

[Tanzy]

That's just the way things work. They last for a year only.

Reefing is never cheap to start with anyway.

[BarraCudaTM]

the one u pasted on ur tank??? right corner??? 38 ?? sure ??

That 1 is a 2 decimal pH meter .. cost $200+

[nicky30092002]

so u mean 38 for the pen lah not meter .. for a moment i got happy leh .. kekekeke