How do I find live cultures of organisms in my package from Flinn?
Some live cultures are not immediately visible upon first glance at the shipping container. Certain organisms do not evenly distribute themselves throughout the culture medium. So, a random sample from the container may turn up nothing but water! Some cultures tend to attach themselves to the bottom or sides of the jar. Amoeba will typically attach to the bottom of the jar. Stentor, Vorticella and Hydra collect on the sides and bottoms of the jars. Place the culture container on a stereo-microscope or under a strong magnifier for a closer look. They may be hard to see, but they are almost certainly there. To dislodge these creatures, gently swirl the contents of the jar and they should break free from the sides. Then pipet them out and place on a slide.