Bold basal solution (10X) is a filter sterilized liquid. Recommended for the in vitro
cultivation of fresh water algae. Add 100ml per litre of basal stock solution to the prepared
medium to achieve the desired concentration.
Measure out approximately 600ml of distilled water. While stirring add 100ml of basal
stock solution. Rinse the original bottle with a small volume of distilled water to remove
traces of the solution. Add desired heat stable supplements prior to autoclaving. Adjust the
medium to the desired pH using 1N HCl/1N NaOH. Make up the final volume to 1000ml
with distilled water. Sterilize the medium by autoclaving at 15 lbs or 121ºC for 15 minutes.
Cool the autoclaved medium to 45ºC before adding the filter sterilized heat labile
supplements. Dispense the desired amount of medium in sterile culture vessels.
Storage and shelf life :
Store the basal stock solution at 2-8°C away from direct light. If possible, the entire content
of each bottle should be used immediately aseptically after opening or else the unused
portion should be stored at the given temperature. Avoid contaminating the liquid. Use
before the expiry date.