MEM (Richter's modification), no phenol red, no gentamicin
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Gibco™

MEM (Richter's modification), no phenol red, no gentamicin

Minimum Essential Medium (MEM) is one of the most commonly used of all cell culture media. MEM can be usedRead more
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Catalog NumberQuantity
A1048801500 mL
Catalog number A1048801
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751.00
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500 mL
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Price (CNY)
751.00
飞享价
Ends: 31-Dec-2025
958.00
Save 207.00 (22%)
Each
Add to cart

Minimum Essential Medium (MEM) is one of the most commonly used of all cell culture media. MEM can be used with a variety of suspension and adherent mammalian cells, including HeLa, BHK-21, 293, HEP-2, HT-1080, MCF-7, fibroblasts, and primary rat astrocytes. We offer a variety of Gibco™ MEM modifications for a range of cell culture applications. Find the right formulation using the media selector tool.

This MEM is modified as follows:
WithWithout
L-glutaminePhenol Red
ProlineGentamycin
Sodium PyruvateHEPES
ZincInsulin

The complete formulation is available.

Gibco™ Richter's MEM is a modified formulation of Eagle's MEM that contains iron, zinc, putrescine, fatty acids, and gentamycin. Richter's modification also includes very high concentrations of both choline chloride and i-Inositol. This product was further modified with L-glutamine, without gentamicin sulfate, and without phenol red.

Product Use
For Research Use Only. Not for use in diagnostic procedures.

Gibco™ MEM contains no proteins, lipids, or growth factors. Therefore, MEM requires supplementation, commonly with 10% Fetal Bovine Serum (FBS). MEM uses a sodium bicarbonate buffer system (2.2 g/L) and therefore requires a 5-10% CO2 environment to maintain physiological pH.

For Research Use Only. Not for use in diagnostic procedures.
Specifications
Cell LineHeLa, BHK-21, 293, HEP-2, HT-1080, MCF-7, and fibroblasts
Cell TypePrimary Rat Astrocytes
Concentration1 X
Manufacturing QualitycGMP-compliant under the ISO 13485 standard
Product LineGibco™
Product TypeMEM (Minimum Essential Medium)
Quantity500 mL
Shelf Life12 Months From Date of Manufacture
Shipping ConditionRoom Temperature
ClassificationAnimal Origin-free
FormLiquid
SterilitySterile-filtered
With AdditivesLow Glucose, Glutamine, Sodium Pyruvate, Zinc, Zinc
Without AdditivesNo Phenol Red, No Gentamicin, No Insulin, No Proline
Unit SizeEach
Contents & Storage
Storage conditions: 2 – 8°C. Protect from light.
Shipping conditions: Ambient
Shelf life: 12 months from date of manufacture

Frequently asked questions (FAQs)

I understand that some media are worse than others for fluorescence imaging. How do I choose?

Most media contain phenol red, which can quench fluorescent dyes in the visible wavelengths. Most media also contain autofluorescent components, such as riboflavin, which can reduce signal-to-background. We offer FluoroBrite DMEM and HEPES-based Live Cell Imaging Solution, which have been optimized for fluorescent imaging. We also offer a number of media without phenol red. But if none of these are reasonable options for your experiment, then we also offer BackDrop Background Suppressor ReadyProbes Reagent, which can be added to quench media autofluorescence.

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.

Should I be concerned about phenol red in my media when labeling my live cells with fluorescent dyes?

Some cell types accumulate phenol red, and this can pose a problem in the use of many fluorescent probes. Phenol red can quench visible-wavelength dyes and, although phenol red is non-fluorescent, various impurities may be fluorescent. We have many phenol red-free media to choose from. Our Live Cell Imaging Solution (HEPES-based) and our FluoroBrite DMEM have been optimized to be phenol red-free as well as to be non-autofluorescent.

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.

How long can I keep my media after supplementing with serum?

Generally speaking, media can be used for up to three weeks after supplementation with serum. There are no formal studies to support this, but it is the rule of thumb used by our scientists.

Find additional tips, troubleshooting help, and resources within our Mammalian Cell Culture Basics Support Center.

My medium was shipped at room temperature but it is supposed to be stored refrigerated. Is it okay?

We routinely ship media that require long-term storage in the refrigerator at room temperature. We have done studies on representative media formulations to show that media can be at room temperature for up to a week without a problem.

Find additional tips, troubleshooting help, and resources within our Mammalian Cell Culture Basics Support Center.

How can I remove mycoplasma contamination from my cell culture medium?

Very often mycoplasma contamination cannot be removed from the culture so it should be discarded. You may have a unique culture that you prefer not to discard and would like to try to clean it. Ciprofloxacin and Plasmocin have reportedly been used for this application. If interested in a protocol or directions for use, check with the antibiotic supplier or published literature. Note that mycoplasma are very difficult to remove from culture and spread easily so the treated cultures should be quarantined until clear of mycoplasma, and your laboratory should be thoroughly cleaned.

Find additional tips, troubleshooting help, and resources within our Cell Culture Support Center.

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