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added section for selecting on agar
# Decant the liquid.
# Store the resulting slurry at refrigeration temperatures. A slight drop in pH may still occur, but this technique should keep the storage solution well above 4.0 pH.
====Selecting for on Agar====
''Lactobacillus'' species can be isolated on agar plates by using a selective media called Rogosa SL. Rogosa SL agar contains ammonium citrate, sodium acetate, a relatively low pH, and acetic acid, which select for ''Lactobacillus'' while inhibiting mold and other bacteria. This medai will not inhibit yeast on it's own, however. If inhibiting yeast is a requirement then add 10 mg/L cycloheximide to inhibit most yeast <ref>[http://basementbrewlab.com/lab/lab-media/sla/ Rogosa SL Agar (Lactobacillus). Basement Brew Lab. Dustin Metzger. Retrieved 12/23/2015.]</ref>.
* See [http://basementbrewlab.com/lab/lab-media/sla/ Rogosa SL Agar (Lactobacillus); Basement Brew Lab, by Dustin Metzger] for more information.
== Commercially available Lactobacillus strains and their pH change over time ==