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10/23/2007, 10:30 AM
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#1 |
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Registered Member
Join Date: Apr 2007
Location: Uranus
Posts: 3,094
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cheap ph probes vs lab grade ph probes
i have a RK2 with a standard probe and i think its not giving me a correct reading, i was looking thru a website and found 2 types of probes, one standard and one lab grade, so whats the diference with the two, besides the price, would i get a better reading thru the lab grade???
sana
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Senior Member of the "Hardly any Water Changes, Temp Swinging, T5ing, No Qtining, Frag Exchanging for Fish Food Current Tank Info: 90RR inwall, Octopuss Skimmer, 2 MP40 wQD, 1 MP10 WQD, 2 Radions G4 Pro, Apex Doser, Apex Controller, 400w heater, 30 Gal Sump, Biopellets, Carbon, Gfo, Macroalgae |
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10/23/2007, 10:43 AM
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#2 |
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Premium Member
 Join Date: Aug 2007
Location: Carmel Valley, ca.
Posts: 53
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I believe the lab grade would have tighter tolerances but they all need to be calibrated from time to time. what are you testing? and do you have a different test method?
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10/23/2007, 10:43 AM
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#3 |
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Premium Member
Join Date: Aug 2007
Location: Fishers, IN, USA
Posts: 1,169
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AFAIK, the lab grade probes give higher precision. Provided your probe is calibrated properly, it should be fairly accurate. Do you have samples to test against?
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-Chris Current Tank Info: 70G Reef (Aug 2007), 45G Reef (Dec 2007) |
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10/23/2007, 11:12 AM
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#4 |
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Registered Member
Join Date: Sep 2007
Location: Guildford, UK
Posts: 150
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test kits for your meters are a must. Especially if your prone to dropping things
 I calibrate monthly or if I drop it.Lab grade surely gives a more precise if not neccesarily more acurate reading. ie 7.65 instead of 7.7 for example. I would have thought that standard probes/meters would be the best choice economically as long as you callibrate. You dont need it that detailed for fishkeeping
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