DMEM:Ham's F12 (1:1), w: 3.1 g/L Glucose, w: 2.5 mM L-Glutamine, w: 15 mM HEPES, w: 0.5 mM Sodium pyruvate, w: 1.2 g/L NaHCO3
DMEM:Ham's F12 is a widely recognized and extensively utilized basal medium in cell culture for biological research. It serves as a fundamental source of nutrients for the growth of various mammalian cell lines, particularly when supplemented with Fetal Bovine Serum (FBS).
This unique formulation combines Dulbecco's Modified Eagle Medium (DMEM) and Ham's F-12 (Ham's Nutrient Mixture F-12) in a precise 1:1 ratio. The addition of L-glutamine further enhances its composition.
DMEM, derived from Eagle's Minimal Essential Medium (EMEM), offers an increased concentration of amino acids and vitamins compared to its predecessor. In contrast, Ham's F-12 is based on Ham's F-10 medium, providing a complementary set of essential components.
To support optimal cell growth, it is common practice to supplement DMEM:Ham's F12 with FBS at a typical concentration of 5-10%. This addition is necessary as the medium lacks growth hormones, lipids, and proteins crucial for cellular development.
DMEM:Ham's F12 incorporates a pH buffer system and is often supplemented with phenol red, a pH indicator. Cultured cells in DMEM:Ham's F12, or any medium utilizing the bicarbonate buffer system, require a controlled CO2 environment of 5-10% to maintain appropriate pH levels.
Quality Control
- Sterile-filtered
Storage and Shelf Life
- Store at +2°C to +8°C, protected from light.
- Once opened, store at 4°C and use within 6–8 weeks.
Shipping Conditions
- Ambient temperature
Maintenance
- Keep refrigerated at +2°C to +8°C in the dark. Avoid freezing and frequent warming to +37°C, as it reduces product quality.
- Do not heat the medium beyond 37°C or use uncontrolled heat sources such as microwave appliances.
- If only part of the medium is to be used, remove the required amount and warm it to room temperature before use.
Composition
Category | Components | Concentration (mg/L) |
Amino Acids | Glycine | 18.75 |
L-Alanine | 4.45 | |
L-Arginine HCl | 147.50 | |
L-Asparagine H₂O | 7.50 | |
L-Aspartic Acid | 6.65 | |
L-Cysteine HCl H₂O | 17.56 | |
L-Cystine 2 HCl | 31.29 | |
L-Glutamic Acid | 7.35 | |
L-Glutamine | 365.00 | |
L-Histidine HCl H₂O | 31.48 | |
L-Isoleucine | 54.47 | |
L-Leucine | 59.05 | |
L-Lysine HCl | 91.25 | |
L-Methionine | 17.24 | |
L-Phenylalanine | 35.48 | |
L-Proline | 17.25 | |
L-Serine | 26.25 | |
L-Threonine | 53.45 | |
L-Tryptophan | 9.02 | |
L-Tyrosine Disodium Salt | 48.10 | |
L-Valine | 52.85 | |
Vitamins | D-Biotin | 0.0035 |
Choline Chloride | 8.98 | |
D-Calcium Pantothenate | 2.24 | |
Folic Acid | 2.66 | |
myo-Inositol | 12.60 | |
Nicotinamide | 2.02 | |
Pyridoxine HCl | 0.031 | |
Pyridoxal HCl | 2.00 | |
Riboflavin | 0.219 | |
Thiamine HCl | 2.17 | |
Vitamin B12 | 0.68 | |
Inorganic Salts | CaCl₂ 2 H₂O | 154.50 |
CuSO₄ 5 H₂O | 0.0013 | |
Fe(NO₃)₃ 9 H₂O | 0.05 | |
FeSO₄ 7 H₂O | 0.417 | |
KCl | 311.80 | |
MgCl₂ 6 H₂O | 61.20 | |
MgSO₄ | 48.84 | |
NaCl | 6996.00 | |
NaHCO₃ | 1200.00 | |
Na₂HPO₄ | 71.02 | |
NaH₂PO₄ | 54.30 | |
ZnSO₄ 7 H₂O | 0.432 | |
Other Components | D-Glucose | 3151.00 |
Hypoxanthine | 2.40 | |
HEPES | 3574.50 | |
Linoleic Acid | 0.042 | |
Lipoic Acid | 0.105 | |
Phenol Red Sodium Salt | 8.63 | |
Putrescine 2 HCl | 0.081 | |
Sodium Pyruvate | 55.00 | |
Thymidine | 0.365 |