Opti-MEM™ I Reduced Serum Medium
Opti-MEM™ I Reduced Serum Medium
Gibco™

Opti-MEM™ I Reduced Serum Medium

Opti-MEM™ I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine SerumRead more
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Catalog NumberQuantity
3198508810 x 500 mL
31985070500 mL
31985062100 mL
Catalog number 31985088
Price (USD)
628.00
Each
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Quantity:
10 x 500 mL
Customize this product
Price (USD)
628.00
Each
Add to cart

Opti-MEM™ I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no change in growth rate or morphology. Opti-MEM™ I medium is also recommended for use with cationic lipid transfection reagents, such as Lipofectamine™ reagent. Opti-MEM™ I medium can be used with a variety of suspension and adherent mammalian cells, including Sp2, AE-1, CHO, BHK-21, HEK, and primary fibroblasts. We offer a variety of Opti-MEM™ I modifications for a range of cell culture applications.


This Opti-MEM™ I is modified as follows:
With
• L-glutamine
• Phenol Red


The complete formulation is confidential. For more information, please contact Technical Services.

Using Opti-MEM™ I Medium
Opti-MEM™ I Reduced-Serum Medium is a unique medium that contains insulin, transferrin, hypoxanthine, thymidine, and trace elements. These additional components allow for a reduction in serum supplementation by at least 50%. Opti-MEM™ I medium uses a sodium bicarbonate buffer system (2.4 g/L), and therefore requires a 5–10% CO2 environment to maintain physiological pH.

For Research Use or Further Manufacturing. Not for diagnostic use or direct administration into humans or animals.
Specifications
Cell LineSp2, AE-1, CHO, BHK-21, and HEK
Cell TypePrimary Fibroblasts
ClassificationHuman Origin
Concentration1 X
FormLiquid
Product TypeOpti-MEM I
Shelf Life18 Months From Date of Manufacture
SterilitySterile-filtered
With AdditivesGlutamine, Phenol Red
Green FeaturesSustainable packaging
Manufacturing QualitycGMP-compliant under the ISO 13485 standard
Product LineGibco™, Opti-MEM™
Quantity10 x 500 mL
Shipping ConditionRoom Temperature
Unit SizeEach
Contents & Storage
Store at 2–8°C and protect from light.

Frequently asked questions (FAQs)

What should I use to dilute my RNAi duplexes and Lipofectamine RNAiMAX before complexing?

We recommend using Opti-MEM I Reduced Serum Medium (Cat. No. 31985062).

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

Do you offer an alternative for Opti-MEM I Reduced Serum Medium (Cat. No. 31985070)?

Opti-MEM I Reduced Serum Medium, no phenol red (Cat. No. 11058021) would be the closest alternative. Both offerings contain L-glutamine. For more a stabilized L-glutamine option, Opti-MEM I Reduced Serum Medium, GlutaMAX Supplement (Cat. No. 51985034) is the recommended alternative. All Opti-MEM offerings have demonstrated performance for both reduced-serum cell culture and lipid-based transfection.

My OpitMEM Reduced Serum Medium (Cat. No. 31985070) was accidentally frozen. Can I still use it?

This product should be stored at 2-8 degrees C and should not be frozen. The biggest issue with accidentally freezing this product is its solubility. If this product was accidentally frozen, we recommend placing it in a 2-8 degree environment and allowing it to slowly thaw overnight. If the product is fully thawed and shows no signs of precipitation, then it should still be usable, but we cannot guarantee effectiveness.

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

Is there any other difference between Opti-MEM I Reduced Serum Medium and Opti-MEM I Reduced Serum Medium, no phenol red besides the presence/absence of phenol red?

The formulation of Opti-MEM I Reduced Serum Medium and that of Opti-MEM I Reduced Serum Medium, no phenol red is the same except for the presence of phenol red in the former medium.

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

Where can I find the osmolality for my lot of Opti-MEM I Reduced Serum Medium?

We do provide osmolality information on the certificate of analysis. All lots of Opti-MEM I Reduced Serum Medium will meet the osmolality specification of ≥280 to ≤320 mOsm/kg.

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

View all Opti-MEM™ I Reduced Serum Medium FAQs