Do Not Make This Stupid Mistake

i test with refractometer, clean glass & store back in it's case daily. I calibrate twice a month.
 
Wait did you lose the red planet? That's gotta suck if you did.
Seriously I don't know if I could stay sane if that happened to me.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%
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