The 2 stars is because of the glass test tube ...
The 2 stars is because of the  glass test tube kit.  One of them was broken when received so it didn't work.  Also, the colors in the remaining tubes weren't at all close to what the results strip showed.  One tube's colors were 1/2 orange and 1/2 pink and those weren't even options on the result page.  Another tube stayed white.  The fungus and bacteria plates worked well.
Rating: 2 stars