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Review on Blue Plastic Hole Test πŸ§ͺ Tube: Convenient and Reliable for Lab Experiments by Randy Bin

Revainrating 4 out of 5

Very convenient for testing aquarium water!

I love this little rack. It takes half a dozen tubes to power my aquarium test kit so the size of this rack is perfect. Accommodates The only complaint is that the plastic is quite flexible, so pressing down to put the caps on the vials is a little awkward.

Pros
  • 2 x 1-1/16" (25mm) tube holders
Cons
  • Not sure