How do you make a LB plate?

How do you make a LB plate?

Protocol

1. 500 mL makes about one sleeve of petri dishes.
2. Add 25g LB Broth per Liter to an appropriately sized beaker.
3. Add Water and Stir until clumps are gone.
4. Add 15 g Agar per Liter , this will not dissolve.
5. Transfer to a erlenmeyer flask at least 2x the volume that you are making.

How do you make a LB amp plate?

Dissolve 15 g of Bacto agar in 1.0 L of LB medium and sterilize by autoclaving. Cool to 50°C in a temperature-controlled water bath. Add 0.50 mL of 100 mg/mL ampicillin. Pour into plates.

What is the purpose of LB agar plate?

Luria broth (LB) is a nutrient-rich media commonly used to culture bacteria in the lab. The addition of agar to LB results in the formation of a gel that bacteria can grow on, as they are unable to digest the agar but can gather nutrition from the LB within.

What ingredients are in LB agar?

One reason LB is commonly used is because it is simple to make, with only a few ingredients, tryptone, yeast extract, and sodium chloride (NaCl). Tryptone, a mixture of peptides generated by digestion of casein with the pancreatic enzyme trypsin, provides nitrogen and carbon (see amino acid profile of tryptone).

What percentage of agar is in a pound plate?

1.5%
LB agar plate, 1.5%

How much agar do you need for plates?

Use about 30 mL of the agar-medium mix to create each plate when using 100-mm diameter dishes . The less agar-medium mix in each plate, the more easily they will dry out. 30 mL is a good amount for long-term storage, 10–20 mL is fine if you are going to use the plates relatively soon.

What is LB broth made of?

LB Broth, also known as, LB medium, Lysogeny broth, Luria broth, or Luria-Bertani medium, is a commonly used nutritionally rich medium for culturing bacteria. First described in 1951 by Giuseppe Bertani, a 1-liter medium consists of 10 grams of tryptone, 5 grams of yeast extract, and 10 grams of sodium chloride.

How do you make LB agar medium?

Dissolve components in 1 liter of distilled or deionized water. For LB agar* add agar to a final concentration of 1.5%. Heat the mixture to boiling to dissolve agar and sterilize by autoclaving at 15 psi, from 121-124°C for 15 minutes. * Strictly speaking, LB agar should be called LA.

What is LB powder?

LB Broth (powder) (MB145) Luria Broth (Miller’s LB Broth) is based on LB Medium as described by Miller. It is suitable for the growth and maintenance of E. coli strains used in molecular microbiology procedures. It is a nutritive rich medium designed for growth of pure cultures of recombinant strains. E.

What was the difference between the LB agar and LB amp agar plates?

LB and LB/Amp Plates: These plates contain the bacterial nutrient medium, Luria-Bertani, which has been solidified with agar. LB/Amp plates have the antibiotic ampicillin added. Store these plates in refrigerator until ready for use.

What is the difference between LB agar and LB broth?

Agar is a polysaccharide isolated from a plant and is used for microbial cultures on solid media. LB broth is generally used for inoculum preparation or start cultures in suspension medium. The only difference between broth and agar media is that broths do not contain an agar component… Thank you.

How do you make LB agar plates?

How to make LB agar plates Weigh out 7.5 g agar, 5 g tryptone, 5 g sodium chloride (NaCl) and 2.5 g yeast extract and add to a 1 L Duran bottle. Measure out approximately 400 mL of distilled water and add to the Duran bottle. Shake the bottle to dissolve the reagents.

How to use lb/AMP and lb/km plates?

Let plates cool with the lids ajar Invert plates, place in sleeve and mark sleeve as LB/Amp or LB/Km depending on the antibiotic

How much gel-Aer Mix do I need to make a plate?

For example: Because we’d like to make 20 plates, and our plates can hold a maximum of 10 mL, we’ll want 200 mL of media total. Importantly, we’ll actually make a bit more than 200 mL (~220 mL) just in case we spill anything or have small errors in measurement. You should also always make a bit more gel-ager mix than you think you’ll need.

How much media do I need to make a plate?

For example: Because we’d like to make 20 plates, and our plates can hold a maximum of 10 mL, we’ll want 200 mL of media total. Importantly, we’ll actually make a bit more than 200 mL (~220 mL) just in case we spill anything or have small errors in measurement.