How often do you calibrate your refractormeter??

[jhj0112]

Originally Posted by Aquattro

People calibrate these things?? oh....lol

haha that's what I thought at first.. lol

[Flash]

I don't do many water changes.... But once ever few months! Lol it only takes a second!

[Aquattro]

Originally Posted by Flash

But once ever few months! Lol it only takes a second!

Ya, but that little bottle of calibration fluid dries up the first week

[Flash]

Lol oh it's been a long time! I forgot how much fun this site was!

[lastlight]

Never have maybe I should check it lol.

[Myka]

I check mine about once a month. I check my clients' refractometers about once a month too. I find they all can use an adjustment by that time.

[mikellini]

I've read that light and temperature both have an effect on accuracy. For instance, if you're checking specific gravity on your water change mix in relation to your tank, you'll want to do it at the same temperature (unless you adjust for the difference) and definitely with the same light source.

It's probably more important to be accurate if you're running at 1.026, but if you run at 1.025 you have a bit more margin for error.

[kamloops_reefer]

everytime - I have a vertex one and find that its a pretty touchy instrument. and can fluctuate +/- 0.03

[mikellini]

Originally Posted by kamloops_reefer

everytime - I have a vertex one and find that its a pretty touchy instrument. and can fluctuate +/- 0.03

My vertex unit is touchy too. I calibrate with a 35ppt solution every time.

[Myka]

Originally Posted by kamloops_reefer

everytime - I have a vertex one and find that its a pretty touchy instrument. and can fluctuate +/- 0.03

Yeah, I find the Vertex ones are pretty bad for wandering.