Moon cycles effecting refractometer calibration.

[Tokinreefdose]

I am interested to see if anyone will be gentle enough to try to see if we can come to a peer review agreement the moon does effect refractometers just like the ocean. I have no evidence but it would logically correlate.

 

[AFHokie]

I am interested to see if anyone will be gentle enough to try to see if we can come to a peer review agreement the moon does effect refractometers just like the ocean. I have no evidence but it would logically correlate.

A refractometer works by measuring the refraction of light through a solution. Not sure how a gravitational phenomena like the moon and tides has anything to do with that.

Unless you are suggesting the gravitational shift moves the calibration screw? If that were the case I think our analog clocks would all be off time because the moon affected the hands/setting dial.

Alright I've ordered a lab grade high percision hydrometer and 35ppt solution from brs. Will be cross comparing my readings. 35 ppt would be the numbers on the right then? I was under the assumption 35 ppm of salt to remedy the, "vampire blood" rodi water. I clearly can see now left is sg specific gravitiy right is ppt parts per thousand.

Correct, put the fluid on the refracrometer and look at the salinity number on the right. 35 in your case. Twist screw until the blue line matches the 35 on your bottle.

I have found that when the blue line is fuzzy brighter light helps see it sharper.

 

[AFHokie]

Oh, and make sure you are accounting for temperature when you use your hydrometer. Temperature affects them because the hydrometer measures density, not refraction. If the water is warmer than the calibration temperature it will read lower in the hydrometer than it actually is.

For example, if your hydrometer is calibrated at 60F but your water is 78 a water sample of 1.025 will actually read as 1.023 in the hydrometer.

 

[Tokinreefdose]

Oh, and make sure you are accounting for temperature when you use your hydrometer. Temperature affects them because the hydrometer measures density, not refraction. If the water is warmer than the calibration temperature it will read lower in the hydrometer than it actually is.

For example, if your hydrometer is calibrated at 60F but your water is 78 a water sample of 1.025 will actually read as 1.023 in the hydrometer.

I have an ATC however I will attempt to match my tanks water temp to calibration solution for a more precise analog calibration. So with my conception of moon cycle effecting refractometers is that visual properties of measuring the specifical gravity are potentially effected with moon phases resulting in user thinking they are "screwed" as far as the calibration adjustment handle.

 

[AFHokie]

I have an ATC however I will attempt to match my tanks water temp to calibration solution for a more precise analog calibration. So with my conception of moon cycle effecting refractometers is that visual properties of measuring the specifical gravity are potentially effected with moon phases resulting in user thinking they are "screwed" as far as the calibration adjustment handle.

I wasn’t referring to the ATC refractometer, I meant the hydrometer. I’m assuming it’s a normal glass drop-in hydrometer? Those don’t have ATC.

 

[Lbrdsoxfan]

I am interested to see if anyone will be gentle enough to try to see if we can come to a peer review agreement the moon does effect refractometers just like the ocean. I have no evidence but it would logically correlate.

Again, I emphasize the moon will have nothing to do with your mechanical device. How it could is beyond lost to me and several others.

 

[Tokinreefdose]

I guess my point is it would make sense moon cycles effect it if no matter how gentle you are you need to recalibrate it and am interested in the idea of peer review for thought than just bliss lol.

 

[Tokinreefdose]

Again, I emphasize the moon will have nothing to do with your mechanical device. How it could is beyond lost to me and several others.

Gravitational pull of a moon could effect the visual measurement properties of specific gravity on the medium measured being marine water hense ocean is my proposition.

 

[Tokinreefdose]

Oh, and make sure you are accounting for temperature when you use your hydrometer. Temperature affects them because the hydrometer measures density, not refraction. If the water is warmer than the calibration temperature it will read lower in the hydrometer than it actually is.

For example, if your hydrometer is calibrated at 60F but your water is 78 a water sample of 1.025 will actually read as 1.023 in the hydrometer.

My misunderstanding of hydrometer was thinking refractometer. I kinda feel hype breasted into brs version without an ATC however I may just get another hydrometer with atc to have more foundation to cross compare data.

 

[RedoubtReef]

I only test during low tide with my refractometer.

 

[Tokinreefdose]

I only test during low tide with my refractometer.

Bro no way

 

[JNalley]

Bro no way

I am positive that his/her/their reply was sarcasm... Tide is not going to affect refractometer readings...

BRS's Refractometers are white-label ATC if I recall correctly... Someone made a post about it here once, I never dug into it.

Things you should know:

Most refractometers should be calibrated for 35ppm and not 0ppm. So, you either need a reliable vendor of calibration fluid or make your own in a reliable and repeatable manner. Someone gave you the formula for it here using Morton's; that's how I used to calibrate mine. However, because they drift so often, I got into the habit of calibrating it every week instead of once a month as the directions said. I have, however, switched over to the Hanna pen, and even though I can only calibrate with their solution, I don't have to calibrate it nearly as often, and it's ridiculously accurate.

 

[EricR]

I am interested to see if anyone will be gentle enough to try to see if we can come to a peer review agreement the moon does effect refractometers just like the ocean. I have no evidence but it would logically correlate.

I speculate not possible to any meaningful/measurable extent at the hobby level.

Gravitational pull of the Moon and Sun (to a lesser extent) obviously has significant effects on ocean tides and such but what is the basis for the question as it relates to hobby-grade refractometers?

 

[Tokinreefdose]

I speculate not possible to any meaningful/measurable extent at the hobby level.

Gravitational pull of the Moon and Sun (to a lesser extent) obviously has significant effects on ocean tides and such but what is the basis for the question as it relates to hobby-grade refractometers?

The relation being marine water with high mineral content thus having magnetic values potentially not effecting the lab grade hydrometers but refractometers. I also have no awarenes on how the illusion of light as a resolution of measurement through a vacuum with gravitional pulls I'm sure being stronger at different water temps. Next we will test if north east south west effects the sg in refractometery. Lol I'm sure it doesn't effect it much and the screw really just being easy to uncalibrated is the case. But I'm not doubting there is loads more to it we don't know. Allright?

 

[JNalley]

The relation being marine water with high mineral content thus having magnetic values potentially not effecting the lab grade hydrometers but refractometers. I also have no awarenes on how the illusion of light as a resolution of measurement through a vacuum with gravitional pulls I'm sure being stronger at different water temps. Next we will test if north east south west effects the sg in refractometery. Lol I'm sure it doesn't effect it much and the screw really just being easy to uncalibrated is the case. But I'm not doubting there is loads more to it we don't know. Allright?

But the tide and moon phases don't affect the magnetic field and have nothing to do with magnetism as a whole, they're gravitational... Compasses are magnetically driven devices; if moon phases and tide changes affected the magnetic field, don't you think we'd have stopped using compasses long ago? Also, a refractometer works with light, which also is unaffected by changes in the magnetic field... I think you're inquisitive, which is a good trait, but it's clear you also need to learn how these things work, otherwise you're searching for snipes...

 

[Garf]

The relation being marine water with high mineral content thus having magnetic values potentially not effecting the lab grade hydrometers but refractometers. I also have no awarenes on how the illusion of light as a resolution of measurement through a vacuum with gravitional pulls I'm sure being stronger at different water temps. Next we will test if north east south west effects the sg in refractometery. Lol I'm sure it doesn't effect it much and the screw really just being easy to uncalibrated is the case. But I'm not doubting there is loads more to it we don't know. Allright?

Mine isn’t affected by any of this, I modified it by adding a quantum flux capacitor in parallel with a gravitational sheer compensator, works a treat.

 

[Keko21]

What does a moon cycle have to do with a mechanical instrument. You have to routinely calibrate it. Especially if it's a variance of one of these....

You stare at them funny and they loose calibration.

I have the exact same one and I calibrated with RODI as well. No issues and have not had to recalibrate for two months. I also took my water to my LFS for testing last week and my salinity measurement was only off by .001

 

[ReefMasta]

I am interested to see if anyone will be gentle enough to try to see if we can come to a peer review agreement the moon does effect refractometers just like the ocean. I have no evidence but it would logically correlate.

 

[ReefMasta]

Gravitational pull of a moon could effect the visual measurement properties of specific gravity on the medium measured being marine water hense ocean is my proposition.

You smoking too much of what you have as your pic!

 

[EeyoreIsMySpiritAnimal]

I am interested to see if anyone will be gentle enough to try to see if we can come to a peer review agreement the moon does effect refractometers just like the ocean. I have no evidence but it would logically correlate.

Seriously?