how to maintain a ph pen properly?

millenium · 29-04-2013, 08:26 AM

After use I just off and close the cap back, I check calibration once every month, is that ok?

Kheong · 03-05-2013, 09:28 PM

Just got a pre-loved oh pen, and only today, realised that the bulb has a tiny bubble. Is this normal?

millenium · 04-05-2013, 08:54 AM

Quote:

Originally Posted by Kheong

Just got a pre-loved oh pen, and only today, realised that the bulb has a tiny bubble. Is this normal?

I think that is the senser

Kheong · 04-05-2013, 09:10 AM

Yes, is there supposed to be bubble in the sensor bulb?

millenium · 04-05-2013, 09:16 AM

Quote:

Originally Posted by Kheong

Yes, is there supposed to be bubble in the sensor bulb?

I am not sure. Maybe just test if it works or not first.

fireblade · 06-05-2013, 06:27 PM

mine have a bubble inside...

normally after used I will wash with tap water and dry with cloth

29-04-2013, 08:26 AM	#1
millenium Senior Dragon Join Date: Mar 2002 Posts: 3,495	how to maintain a ph pen properly? After use I just off and close the cap back, I check calibration once every month, is that ok?

03-05-2013, 09:28 PM	#2
Kheong Banned Join Date: Aug 2006 Posts: 1,147	Just got a pre-loved oh pen, and only today, realised that the bulb has a tiny bubble. Is this normal?

04-05-2013, 09:10 AM	#4
Kheong Banned Join Date: Aug 2006 Posts: 1,147	Yes, is there supposed to be bubble in the sensor bulb?

06-05-2013, 06:27 PM	#6
fireblade Endangered Dragon Join Date: Sep 2002 Posts: 5,414	mine have a bubble inside... normally after used I will wash with tap water and dry with cloth

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