Shankytank
New member
Does it uses the liquid calibration or the screw ?
Sent from my SM-T705 using Tapatalk
Sent from my SM-T705 using Tapatalk
How to calibrate refractometer ?
- Thread starter Shankytank
- Start date
Shankytank
New member
So by the mean to calibrate the refractometer can be one of them then can be the fluid or the screw right ?
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kmbyrnes
New member
Longer answer.....
You use the calibration fluid to make an adjustment to the set screw so it reads what your fluid is supposed to be ( 1.025 or what ever ).
DO NOT use RODI water to set your zero point.
These are not nuclear grade instruments and they will be inaccurate at some point along the scale.
You want the tool to be most precise in the area your are attempting to measure.
You use the calibration fluid to make an adjustment to the set screw so it reads what your fluid is supposed to be ( 1.025 or what ever ).
DO NOT use RODI water to set your zero point.
These are not nuclear grade instruments and they will be inaccurate at some point along the scale.
You want the tool to be most precise in the area your are attempting to measure.
Shankytank
New member
And when will i calibrate the refractometer ?
Sent from my SM-T705 using Tapatalk
Sent from my SM-T705 using Tapatalk
homer1475
New member
35ppt calibration solution is put on the glass, you then look through the eye piece and turn the screw so the blue line matches up to 35ppt.
I like to calibrate mine on every use, but I notice little to no variation. Some refractometers will loose calibration if just bumped. Some are better built then others.
I like to calibrate mine on every use, but I notice little to no variation. Some refractometers will loose calibration if just bumped. Some are better built then others.
MondoBongo
Obligate Feeder Obsessed
i like to test mine regularly. i have one refractometer that rarely needs touched, and another one that seems to go out of whack when the wind blows.
i try to check them both at least once a month.
lespaul339
Reefer
I check mine and calibrate it every time before use. Only takes a couple seconds to do. Would rather be safe than sorry.
fcmatt
Member
Just today I calibrated mine. I bought two different brand calibration fluids. They were off just a tiny tiny bit. I centered it among the two. Just to be clear off by the smallest amount. Even turning the calibration screw a little bit was difficult due to how little they were off from each other. I consider both solutions to be reasonable and accurate enough for the price.
der_wille_zur_macht
Team RC
Check it every time. I've had units that were fine for months or years, and then one day were off by 20 or 30%. No mishandling, no abuse, no nothing wrong.
Make sure you understand the procedure for use, as well. The common ATC (auto temp correction) units need the sample to sit on the glass for 45 seconds before you take a reading. If your isn't ATC, you need to understand the temp and/or procedure it's designed for.
Make sure you understand the procedure for use, as well. The common ATC (auto temp correction) units need the sample to sit on the glass for 45 seconds before you take a reading. If your isn't ATC, you need to understand the temp and/or procedure it's designed for.
