Chemically Defined MEM Alpha-Modification (CD-MEM-α) in Earle’s Buffer

Chemically Defined MEM Alpha-Modification (CD-MEM-α) in Earle’s Buffer

PurMa™ Chemically Defined CD MEM Alpha in EBSS (CD-MEM-α/EBSS) medium does not need any serum, fully synthetic and is free of any trace of animal products.  Additionally, the cell growth with CD-MEM-α/EBSS Medium is equivalent to Medium+ 10% FBS.

  • ✓Proudly made in the USA, manufactured in house
  • ✓Certificate of Analysis available for every lot
  • ✓Backed by decades of cell culture and protein biochemistry expertise
  • ✓Bulk pricing, purchase orders, and custom formulations welcome
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SKU: N/A Categories: Cell Culture Media, MEM Alpha Modification in Earle’s Buffer (MEM-α) Tags: Advanced, Advanced MEM Alpha, Cell Culture, Earle's Buffer, EBSS, glucose, Human Transferrin, L-Alanyl-L-Glutamine, MEM Alpha, MEM-α, Phenol Red, Recombinant Insulin, Serum Reduction, Sodium Bicarbonate, Without Phenol Red

Description

Background

PurMa™ Chemically Defined CD MEM Alpha in EBSS (CD-MEM-α /EBSS) is a proprietary formulation used to grow cells in vitro without any undefined or animal-derived components. Moreover, CD-MEM-α/EBSS Medium contains known quantities of pure chemicals, including amino acids, vitamins, salts, sugars, and more importantly a proprietary combination of synthetic growth factors.

It is absolutely crucial to mention that the PurMa™ Growth Supplement for each conventional media such as DMEM, IMDM, RPMI-1640… (base media) are slightly different in combination, amount of several growth factors, ions, chemicals, pH with particular adjustments need to be done, based on the environments the base media provides.

This provides a consistent and controlled environment for cell growth and research. Noticeably, CD-MEM-α/EBSS Medium is essential for applications that require reproducibility and regulatory compliance as well as for studying specific cellular processes without extraneous variables. Furthermore, CD-MEM-α/EBSS Medium is designed for custom formulations tailored for various cell types

CD-MEM-α in Earle’s Buffer Graph

Important Notes:

It is crucially vital, for a gradual transition from media containing FBS to chemically defined cell culture media, to follow these steps:

  • Starting Point: 10% FBS+ (control) (you need two controls, one to be left in only 10% FBS and continue monitoring for comparing with 0% FBS + PurMa™ Chemically Defined Medium. The second one chemically defined medium + 10% FBS which is going through the reduction of FBS process)
  • 48 hours later: 8% FBS in + PurMa™ Chemically Defined Medium
  • 48 hours later: 6% FBS in + PurMa™ Chemically Defined Medium
  • 48 hours later: 4% FBS + PurMa™ Chemically Defined Medium
  • 48 hours later: 2% FBS + PurMa™ Chemically Defined Medium
  • 48 hours later: 1% FBS + PurMa™ Chemically Defined Medium
  • 24 hours later: 0% FBS and only PurMa™ Chemically Defined Medium

Importantly, for each change, spin down and fully discard the media and replace it with the less percentages of FBS.

Noticeably, you don’t have to start with a huge number of cells (~500,000 cells/ml). Additionally, we strongly recommend you start with more than one plate as some of the plates might get contaminated

So, once the cells are kept in chemically defined Media, you should always keep them in the same chemically defined medium from the same vendor and the same formulation, even for freezing (see below).

Usually, after you get your cells adapted to PurMa™ Chemically Defined Medium you need to make several plates and freeze down several vials. The mentioned cells are adapted to chemically defined medium and when you thaw them in the first week, in addition to PurMa™ Chemically Defined Medium, you need to add 10% PurMa™ CD Booster (Cat# P3C10144).

 

Formulation

The CD-MEM-α/EBSS Medium includes a base formulation including L-Alanine -L Glutamine :Base formulation for CD MEM in EBSS P3C310123

Additionally, CD-MEM-α/EBSS Medium contains a proprietary synthetic cocktail of specific growth factors, hormones, and other nutrients which make it independent of any serum and any trace of animal products.

References

  1. The growth of L-cells and Vero cells on an autoclavable MEM-peptone medium. L Keay Biotechnology and bioengineering, 19(3), 399-411 (1977-03-01).
  2. Minimum essential medium alpha (MEM) enhances assisted reproductive technology results. I. Mouse embryo study. Wun WS, Wun CC, Grunert GM. J Assist Reprod Genet. 1994 Jul;11(6):303-7. doi: 10.1007/BF02215717. PMID: 7734915.
  3. Alpha-minimum essential medium (MEM) enhances in vitro hatched blastocyst development and cell number per embryo over Ham’s F-10. Roudebush WE, Often NL, Butler WJ. J Assist Reprod Genet. 1994 Apr;11(4):203-7. doi: 10.1007/BF02211809. PMID: 7711383.
Parameter Specification
Appearance Red, clear liquid
pH 7.2 ± 0.1
Osmolality 275-360 mOsm/L
Endotoxin NMT< 2EU/mL
Mycoplasma Negative
Suitability  Suitable for mammalian cell culture
Additive Sodium pyruvate
Indicator Phenol red
Mycoplasma Detection Negative
Sterility Tested Sterile filtered using 0.1 µm filter, 3 Times
Form Liquid
Shipping Condition  Room temperature

 

Additional information

Condition

CD-MEM-α , Standard Formulation, CD-MEM-α , w/o L-Alanyl-L-L-Alanyl-L-L-Alanyl-L-Glutamine, CD-MEM-α , w/o Phenol Red, CD-MEM-α , w/o Sodium Bicarbonate, CD-MEM-α , w/o Glucose, CD-MEM-α , w/o Lipoic Acid, CD-MEM-α , w/o L-Alanyl-L-Glutamine, w/o Phenol Red, CD-MEM-α , w/o L-Alanyl-L-Glutamine, w/o Sodium Bicarbonate, CD-MEM-α , w/ L-Alanyl-L-Glutamine, w/o Phenol Red, w/o Sodium Bicarbonate, CD-MEM-α , 15 mM HEPES (3.6 g/L), CD-MEM-α , 25 mM HEPES (5.9 g/L), CD-MEM-α , w/o Sodium Pyruvate, CD-MEM-α , High Glucose (4.5 g/L), CD-MEM-α , High Sodium Bicarbonate (3.7 g/L), CD-MEM-α , Low Sodium Bicarbonate (0.85 g/L)
Size

1X 100 ml, 1X 1000 ml, 1X 500 ml

Documents

Certificate of Analysis (COA): Available upon request for your specific order — email info@purmabiologics.com and we will send the current lot documentation.

Safety Data Sheet (SDS): Available upon request — email info@purmabiologics.com.

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