Dymax pH Meter - Page 2

ymmij · 05-09-2010, 11:55 PM

Quote:

Originally Posted by Carz

@ymmij, you using the Dymax pH Meter as well right? How would you rate it so far?

so far so good... no major complain....

main reason i got was because it looked nice

Carz · 06-09-2010, 01:29 AM

Thanks for your feedback! Certainly worth considering for the looks alone.

06-09-2010, 05:46 AM

Bro, with extra few red note you can buy a Pinpoint PH meter.

Ryan Red · 06-09-2010, 08:31 AM

Quote:

Originally Posted by Carz

@Ryan Red, I guess pH7 is enough but if I really want to be anal or need to confirm accuracy, I suppose all pH meters should allow slope calibration base on either pH4 or 10.

hi TS, that depend on prode reading tolerance (+-%).
and also u wont want your tank water below ph4 or abover ph10.

ph meter (aquarium type) dont have or dont need to calibrate ph4 / ph10 i suppose.

07-09-2010, 02:33 AM

Are this the types that link to co2 solenoid and will on/off the co2 to achieve the desired ph?

BarraCuda™ · 07-09-2010, 11:20 AM

All probes are built differently and have different voltage at a specific pH value.

If your pH meter only allows pH7.00 calibration, it will assume that each pH1.00 is 59mV.

Better pH meter allow at least 2 point or even 3 point calibration. By knowing the exact mV at pH4,7 and 10. The pH meter can calculate more accurately rather than assume 59mV/pH.

For aquaria use, single point calibration is good enough. You just need a rough measurement, precise measurements are not required.

Carz · 07-09-2010, 02:27 PM

Wow now that's what I call technical knowledge! Being a technical guy from other fields as well, I really appreciate such details as I can get very anal into things. Thank you very much and apologies if anyone is offended by my inquisitive nature. I'm still deciding between Dymax and the cheapo eBay one as I have a specific limited space I would want to mount it. Pinpoint is definately better... if only their monitor is much smaller...

PNT Guy · 07-09-2010, 02:27 PM

Quote:

Originally Posted by Carz

Oh almost forgot, where can I get it at best price? Lowest quoted so far is $155, buffering solution $9 to $10 each.

One bro says he got at $135 in Feb this year from Seaview/Nanyang but they refused to quote me over the phone but says higher than $135.

$155 is enough for you to buy a pinpoint ph meter already with pH7.000 and pH10.000/pH4.000 calibration liquid with an add of a green note its enough for you to buy a ac to dc adapter for the pinpoint pH meter.

Carz · 07-09-2010, 07:11 PM

Bro petermax and PNT Guy, thanks for the headsup. Really appreciate it. You guys pointed out my exact dilemma. A smarter and practical choice would have been Pinpoint. I'll give it a serious consideration over my need to mount it on the front of my small tank canopy.

07-09-2010, 09:00 PM

i've been using pinpoint ph meter for ard 2 mths. so far so good.

06-09-2010, 01:29 AM	#12
Carz New Member Join Date: Jul 2010 Posts: 35	Thanks for your feedback! Certainly worth considering for the looks alone.

06-09-2010, 05:46 AM	#13
petermax Guest Posts: n/a	Bro, with extra few red note you can buy a Pinpoint PH meter.

07-09-2010, 02:33 AM	#15
deavenger Guest Posts: n/a	Are this the types that link to co2 solenoid and will on/off the co2 to achieve the desired ph?

07-09-2010, 11:20 AM	#16
BarraCuda™ SiaoGu Gives You Wings Join Date: Jul 2001 Posts: 4,169	All probes are built differently and have different voltage at a specific pH value. If your pH meter only allows pH7.00 calibration, it will assume that each pH1.00 is 59mV. Better pH meter allow at least 2 point or even 3 point calibration. By knowing the exact mV at pH4,7 and 10. The pH meter can calculate more accurately rather than assume 59mV/pH. For aquaria use, single point calibration is good enough. You just need a rough measurement, precise measurements are not required.

07-09-2010, 02:27 PM	#17
Carz New Member Join Date: Jul 2010 Posts: 35	Wow now that's what I call technical knowledge! Being a technical guy from other fields as well, I really appreciate such details as I can get very anal into things. Thank you very much and apologies if anyone is offended by my inquisitive nature. I'm still deciding between Dymax and the cheapo eBay one as I have a specific limited space I would want to mount it. Pinpoint is definately better... if only their monitor is much smaller...

07-09-2010, 07:11 PM	#19
Carz New Member Join Date: Jul 2010 Posts: 35	Bro petermax and PNT Guy, thanks for the headsup. Really appreciate it. You guys pointed out my exact dilemma. A smarter and practical choice would have been Pinpoint. I'll give it a serious consideration over my need to mount it on the front of my small tank canopy.

07-09-2010, 09:00 PM	#20
winq Guest Posts: n/a	i've been using pinpoint ph meter for ard 2 mths. so far so good.

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