Penicilina-estreptomicina-glutamina (100X)

The Penicillin-Streptomycin-Glutamine solution is at 100X. This can be used at a 1X concentration in media.

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

Yes, this is still good to use. The precipitate is due to the glutamine. The solution needs to be warmed to room temp and swirled unitl the glutamine goes back into solution.

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

Yes, this is normal and will not affect the potency or application of the product. This solution is typically colorless. However, it can have a pink to yellow color tint. The coloring is a carry-over from the manufacturing process of Streptomycin - the genus that Steptomycin is isolated from (Actinomycetes Streptomyces griseus) is responsible for a wide variety of pigments.

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

This contains: Penicillin G Sodium at 12,000 Units/mL, Streptomycin Sulfate at 10,000 mcg/mL, L-glutamine at 29.2 mg/mL (200 mM), and Sodium Citrate 0.14% NaCl at 10mM

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

When an irreplaceable culture becomes contaminated, researchers may attempt to eliminate or control the contamination.

1. Determine if the contamination is bacteria, fungus, mycoplasma, or yeast. Read more here to view characteristics of each contaminant.
2. Isolate the contaminated culture from other cell lines.
3. Clean incubators and laminar flow hoods with a laboratory disinfectant, and check HEPA filters.
4. Antibiotics and antimycotics at high concentrations can be toxic to some cell lines. Therefore, perform a dose-response test to determine the level at which an antibiotic or antimycotic becomes toxic. This is particularly important when using an antimycotic such as Gibco Fungizone reagent or an antibiotic such as tylosin.

The following is a suggested procedure for determining toxicity levels and decontaminating cultures:

1. Dissociate, count, and dilute the cells in antibiotic-free media. Dilute the cells to the concentration used for regular cell passage.
2. Dispense the cell suspension into a multiwell culture plate or several small flasks. Add the antibiotic of choice to each well in a range of concentrations. For example, we suggest the following concentrations for Gibco Fungizone reagent: 0.25, 0.50, 1.0, 2.0, 4.0, and 8.0 µg/mL.
3. Observe the cells daily for signs of toxicity such as sloughing, appearance of vacuoles, decrease in confluency, and rounding.
4. When the toxic antibiotic level has been determined, culture the cells for two to three passages using the antibiotic at a concentration one- to two-fold lower than the toxic concentration.
5. Culture the cells for one passage in antibiotic-free media.
6. Repeat step 4.
7. Culture the cells in antibiotic-free medium for four to six passages to determine if the contamination has been eliminated.

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