Refractometre What Do They Measure

[bae1994]

what do they measure
for example
sg
ph
ammonia
nitrite
nitrate
i think its ph not sure ive got one but just dont now what it measures

 

[helterskelter]

It's salt but i've never used or had one so may be wrong but i sure it is

 

[bae1994]

ahh ok any one else not trying to be rude helterskelter just you said you may be wrong

 

[TigerIssey]

It measures specific gravity which corresponds to the salinity level.

 

[seffieuk]

It measures specific gravity which corresponds to the salinity level.

yep, as Tina says above, measure specific gravity of water (how much salt)

Seffie x

 

[bae1994]

sweet out with the hydrometer then lol

 

[BigC]

sweet out with the hydrometer then lol

No self-respecting Marine Aquarist would be seen dead with a Hydrometer these days
ATB
C

 

[bae1994]

is that a threat argggh


yeah i know hate the bl**dy things so gonna start with the refractometer

 

[VictorMeldrew]

Hydrometer's i brought one when i started, they are pretty useless, it only really gave me a rough ball park figure at best, i used it a couple of times then gave up.

 

[Jimyfloyd]

Just to add to the rest. A refractometer measures salinity by the refraction of light due to the salt in the water. They're used all over the place to test other things such as alcohol.

£30-35 will get you one that works well

 

[bae1994]

Just to add to the rest. A refractometer measures salinity by the refraction of light due to the salt in the water. They're used all over the place to test other things such as alcohol.

£30-35 will get you one that works well

ok thanks

 

[kj23502]

I bought mine off ebay for $35 (including shipping) and I'm rather impressed with it.

 

[helterskelter]

It's salt but i've never used or had one so may be wrong but i sure it is

LOL well at least i was sort of right that it can be used for measuring salt

 

[BigC]

For the purpose of this forum section a Refractometer is used for measuring Specific Gravity and Salinity (amount of dissolved salts) in our marine aquarium water.
Refractometers utilise the refractive index principle and are used for many different liquids to ascertain various values using a different scale within the lens.
See below for a more concise description
[URL="http/en.wikipedia.org/wiki/Traditional_h...d_refractometer"]http/en.wikipedia.org/wiki/Traditional_h...d_refractometer[/URL]

ATB
C

 

[bae1994]

thanks