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M6030

M9, Minimal Salts, 5X

powder, minimal microbial growth medium

Synonym(s):

M9 media

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About This Item

NACRES:
NA.85
UNSPSC Code:
12352302
Grade:
Molecular Biology
Form:
powder
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grade

Molecular Biology

Quality Segment

sterility

non-sterile

form

powder

composition

KH2PO4, 15 g/L , NaCl, 2.5 g/L , Na2HPO4, 33.9 g/L , NH4Cl, 5 g/L

application(s)

food and beverages

storage temp.

room temp

suitability

nonselective for Escherichia coli, nonselective for coliforms

General description

M9 Minimal Salts is a highly-referenced microbial growth medium used for the cultivation of E. coli. This buffered minimal microbial medium contains only salts and nitrogen, so it is traditionally supplemented with glucose, amino acids and vitamins as needed.

Application

M9, Minimal Salts, 5X has been used:
  • in a selective agar medium for the isolation of sulphate reducing bacteria
  • in GMML minimal media to propagate phage-resistant DH10B cells
  • in M9 minimal medium which is used for cell motility assay
M9 Minimal Salts 5x are suitable for the preparation of M9 Minimal Medium for use in propagation of E. coli and plasmid amplification. It is suitable for non-selective cultivation of E. coli strains for cloning, DNA plasmid production and production of recombinant proteins. Also suitable for maintaining positive selection pressure on E. coli that produce essential amino acids and for maintenance of F′-containing bacteria strains for M13 propagation.

Features and Benefits

M9 powder provides:
  • Standard formulation
  • A budget-friendly alternative to liquid

Preparation Note

1. Dissolve 56.4 g in 1L of distilled water.
2. Autoclave for 15 minutes at 121°C.
This convenient 5× concentrate can be stored and diluted as needed to prepare 5 L of 1× M9 minimal salts.

For M9 minimal medium:
1. Aseptically dilute 200 ml of M9 minimal salts, 5× concentrate with 800 ml of sterile water. If necessary, cool to 45-50°C.
2. Aseptically add 20 ml of sterile 1 M glucose and 2 ml of sterile 1 M magnesium sulfate to prepare 1 L of M9 minimal medium.
3. If desired, aseptically add 0.1 ml of 1 M sterile calcium chloride to the M9 minimal medium. The M9 minimal medium may also be supplemented with the appropriate amino acids.
Make a 5x concentrated stock solution by stirring to suspend 56.4g powder in 1L water. Autoclave for 15 minutes at 121°C to sterilize. Allow to cool before making additions, such as antibiotics (if desired).

Dilute the 5x M9 concentrated stock to a 1x working solution by adding 200mL 5x M9 stock to 800mL sterile water. If needed, allow to cool before making additions, such as antibiotics (if desired).

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M9956Y2377L3272
form

powder

form

liquid

form

powder

form

powder

Quality Level

200

Quality Level

500

Quality Level

200

Quality Level

200

grade

Molecular Biology

grade

Molecular Biology

grade

Molecular Biology

grade

Molecular Biology

composition

KH2PO4, 15 g/L , Na2HPO4, 33.9 g/L , NH4Cl, 5 g/L , NaCl, 2.5 g/L

composition

-

composition

-

composition

Agar, 15 g/L , NaCl, 0.5 g/L , Tryptone, 10 g/L , Yeast Extract, 5 g/L

sterility

non-sterile

sterility

sterile; 0.2 μm filtered

sterility

non-sterile

sterility

non-sterile

storage temp.

room temp

storage temp.

room temp

storage temp.

room temp

storage temp.

room temp


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Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)



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Questions

1–2 of 2 Questions  
  1. Where does the 5x concentrate need to be stored? At room temperature or at 4°C? And how long would the shelf life be?

    1 answer
    1. When autoclaved or filter sterilized, the prepared solution may be stored tightly sealed at room temperature for up to 2 years.

      Helpful?

  2. What is the preparation ratio for the culture medium?

    1 answer
    1. The preparation instructions are listed on the product detail page in the DESCRIPTION section under 'Preparation'.
      Please navigate to the link below:
      https://www.sigmaaldrich.com/product/sigma/m6030

      1. Dissolve 56.4 g in 1L of distilled water.
      2. Autoclave for 15 minutes at 121°C.
      This convenient 5X concentrate can be stored and diluted as needed to prepare 5 L of 1X M9 minimal salts.

      For M9 minimal medium:
      1. Aseptically dilute 200 mL of M9 minimal salts, 5X concentrate with 800 mL of sterile water. If necessary, cool to 45-50°C.
      2. Aseptically add 20 mL of sterile 1 M glucose and 2 mL of sterile 1 M magnesium sulfate to prepare 1 L of M9 minimal medium.
      3. If desired, aseptically add 0.1 mL of 1 M sterile calcium chloride to the M9 minimal medium. The M9 minimal medium may also be supplemented with the appropriate amino acids.

      Helpful?

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