User:Neil J. Parikh/Lab Notebook

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Revision as of 17:06, 6 February 2008

This is an experiment title

Pipetting & Making Solutions

Pg. 6

              I.        Pipetting

a.    Learned to use pipettes properly

b.    Make sure to wipe down pipettes between solutions (with Ethanol)

c.    Change tips every time you go between solutions

            II.        Solutions

a.    Task: Make 0.3M KCl

                                                  i.    Salt (KCl): CAS 7447-40-7

                                                ii.    MW: 74.56g/mol

                                               iii.    2.2368 g / 100mL

 

Plate Creation & Cell Culture

Pg. 7

              I.        Steps for creating a plate:

a.    Dissolve 25g LB in 800mL of H2O

Bring the final volume to 1L in a 2L flask

Add 15g Bactoagar, cover with foil, autoclave for 20-30 minutes

b.    Bring back to lab, cool to 50°C while stirring

c.    Add100mg AMP & let swirl until dissolved

d.    Pour it into the plates (about 2-3mm deep)

            II.        Cell Culture:

a.    Use solution of LB with AMP

Ensure to keep the bags sealed to keep everything sterile

*Note once a bag of plates has been opened, the whole thing must be used

The tubes allow the solution to be aerated

The tubes with bacteria should look cloudy upon visual inspection—can be confirmed with cell density measurement (using the Spec)

b.    Sterilize the autopipette, set to 1mL (make a 2mL culture, however)

Add 2mL of the LB (for a miniprep); you will have to add 1mL, two times

c.    Label one as the control and another as your experimental sample

*Label the tubes with your Initials, Sample Name (control or experimental) and the date

d.    Dip the culture scraper in ethanol and flame lightly (2x) to sterilize

e.    Let the scraper cool for a few seconds

f.     Scrape off a tiny bit of bacteria off of the plate and place the scraper into the tube and shake around to ensure the bacteria breaks off into the tube

g.    Set incubator at 37°C overnight and let shake gently for 12-14hrs

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