Quote Originally Posted by BeakerBob View Post
I have not ventured into the zooplankton/phytoplankton production, but there are a number of folks that have....maybe we can get them to post.

Making refractometer calibration fluid is easy - if you have the right tools. An analytical grade balance to precisely weigh out the NaCl and a volumetric flask is needed.

However, if you want to give it a try, you can get pretty close by dissolving 3.65 grams of NaCl into 96.35 mL of RODI. If you don't have the tools for this type of measurement, you can do the following*:

1. Measure
Hey you didn't finish!!!