How often do you calibrate your refractormeter??

[Madreefer]

Never....I haven't checked salinity in years.

For those of you who do check, what do you use to calibrate? Here in PG we don't have a source of SW supplies.

[lastlight]

this is looking like a new years resolution i can handle...

[whatcaneyedo]

I've been calibrating my Sybon annually for a few years with calibration solution from J&L. It generally doesn't change by much unless I bump or drop it.

[mikellini]

Looks like I'm in the market for a new refractometer. Suggestions?

[Reef Pilot]

Originally Posted by mikellini

Looks like I'm in the market for a new refractometer. Suggestions?

Sybon.

[Reef Pilot]

To satisfy my own curiosity, I just tested my Sybon again. It was dead on with both the 0 ppt and 35 ppt calibration solutions. I went out and bought the 35 ppt solution the last time we had this fear mongering on the forum.

I have owned it now for over 4 years (use it before and after water changes) and have never had to calibrate it.

[lastlight]

maybe it's the bumping some people do? I handle mine like fine china just out of habit. I plan to test to satisfy my curiosity but I will be shocked if it's not still accurate.