Milwaukee pH probe holder and calibration tank

You are supposed to keep liquid storage solution in the cap but the cap doesn't stand up on its own so I spill it constantly. I got tired of that so I designed this. It will hold the probe upright for storage as well as the cap while the probe is in use. 

This is not a replacement cap, it is made to fit the outside of the cap that comes with the probe. 

The smaller model is a calibration tank or sample container. It allows you to use a very small amount of liquid since it is only slightly larger than the probe tip. 

Prints easily in PLA or pretty much anything.