Technical Data
Media
MEM Alpha Modified w/ L-Glutamine, w/o Ribo, Deoxyribonucleosides, Glucose, Adenosine, Cytidine, Pyruvic Acid, Thymidine, Uridine (Powder)
M3852-02
Cell Culture Grade
Storage RT/4°C    Shipping RT
Components shown as g/liter
Inorganic Salts:
Calcium Chloride•2H2O0.265
Magnesium Sulfate0.09767
Potassium Chloride0.4
Sodium Chloride6.8
Sodium Phosphate Monobasic0.122
Amino Acids:
L-Alanine0.025
L-Arginine•HCl0.126
L-Asparagine•H2O0.050
L-Aspartic Acid0.030
L-Cysteine•HCL•H2O0.100
L-Cystine•2HCl0.0313
L-Glutamic Acid0.075
L-Glutamine0.292
Glycine0.050
L-Histidine•HCl•H2O0.042
L-Isoleucine0.052
L-Leucine0.052
L-Lysine•HCl0.0725
L-Methionine0.015
L-Phenylalanine0.032
L-Proline0.040
L-Serine0.025
L-Threonine0.048
L-Tryptophan0.010
L-Tyrosine•Na20.052
L-Valine0.046
Vitamins:
L-Ascorbic Acid0.050
D-Biotin0.0001
Choline Chloride0.001
Cyanocobalamin (Vitamin B12)0.00136
Folic Acid0.001
Inositol0.002
Niacinamide0.001
D-Pantothenic Acid•Ca0.001
Pyridoxal•HCl0.001
Riboflavin0.0001
Thiamine•HCl0.001
Other:
AdenosineAbsent
CytidineAbsent
2'-DeoxyadenosineAbsent
2'-Deoxycytidine•HClAbsent
2'-Deoxyguanosine•HClAbsent
D-GlucoseAbsent
Guanosine0.01
Pyruvic Acid, SodiumAbsent
Phenol Red, Sodium0.011
Thioctic (Lipoic) Acid0.0002
ThymidineAbsent
UridineAbsent
Total:9.03g/liter
Minimum Essential Medium (MEM), developed by Harry Eagle, is one of the most widely used of all synthetic cell culture media. Early attempts to cultivate normal mammalian fibroblasts and certain subtypes of HeLa cells revealed that they had specific nutritional requirements that could not be met by Eagle's Basal Medium (BME). Subsequent studies using these and other cells in culture indicated that additions to BME could be made to aid growth of a wider variety of fastidious cells. MEM, which incorporates these modifications, includes higher concentrations of amino acids so that the medium more closely approximates the protein composition of mammalian cells. MEM has been used for cultivation of a wide variety of cells grown in mono-layers.


Directions per Liter: Dissolve 9.03g in 800-900ml of ddH2O stirring gently until completely solubilized. Adjust pH of the medium to the desired level. If required, add 2.2g/Liter NaHCO3 with stirring. Add additional water to bring the solution to 1L. Filter-sterilize using a 0.22 micron membrane filter. Aliquot into sterile containers. Do not autoclave. Contains heat-labile compounds that can be damaged with autoclaving.

Storage and Stability: Store powdered media at RT. Opened bottles should be capped tightly and kept in a dark, low humidity environment. Prepared media should be kept at 4°C and used within a short period of time.

Appearance: Light orange, homogenous, free flowing powder

Solubility: Yellow, clear, complete

pH: As reported

Endotoxin: 1EU/ml


Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.

1. Eagle, H., Tissue Culture Association Manual 3:517-520 (1976). 2. Eagle, H. Science 122:501 (1955)