Reader task: a lab or clinic staff member or student looking at a urea tube or plate and deciding what a pink or yellow result means. This page is general product and laboratory-reference information, ...

A seventh grader from Palatine, Illinois, has turned eggshells into calcium carbonate crystals and used them to investigate whether the mineral can affect bacterial growth. Shrikari Punjala, a student ...

The citrate utilization test shows whether a bacterial isolate can use citrate as its only carbon source. On Simmons citrate agar, growth with a bromothymol blue colour change from green to blue (pH ...