refractometer

[sjsheng]

where can i get this refractometer from??

and how much will it cost...

i expect it will cost around $40-$100...

any bro know where can i get this?

[Chris]

Cannot see your pic but refractometer is normally not so cheap...about $200+. Can get from Petmart.

[sjsheng]

wah so xpensive ar.. 200+

just to measure the SG...

[lightningstrike]

measure specific gravity u mean??? that's a hydrometer!

[Benz...]

A refractometer does the same thing and it is more accurate than a hydrometer... The cost for one would range between 150 ~ 280 depending on the brand and where you get it from...

[hotsoup]

If u happen to measure SG with hydrometer in different water temperture, readings will vary. Retrometer will provide a more constant and accurate reading regardless of water temperture. That's why the price is so..much apart

[Tanzy]

The refractive index of water is affected by density of the water which is affected by temperature therefore even when using a refractometer you must note the temperature to convert S.G. into salinity.

If you are interested in this phenomenen, you can search on Lorentz-Lorenz relation which describes the relationship between refraction of light and the density of a translucent body.