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Description
RPMI-1640 With Sodium bicarbonate and 20mM HEPES buffer Without L-Glutamine, is an orangish red colored, clear solution. RPMI were developed for the culture of human normal and neoplastic cells in vitro. It was specifically designed to support the growth of human lymphoblastoid cells in suspension culture. Now the medium is extensively used for a wide range of anchorage dependant cell lines. It is also known to support growth of cells in the absence of serum.
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Shelf life
18 months
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Storage
Store at 2-8°C away from bright light
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Appearance
Orangish red colored, clear solution.
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PH
7.00 -7.60
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Osmolality in mOsm Kg H2O
255.00 -295.00
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Sterility
No bacterial or fungal growth is observed after 14 days of incubation, as per USP specification.
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Cultural Response
The growth promotion capacity of the medium is assessed qualitatively by analyzing the cells for the morphology and quantitatively by estimating the cell counts and comparing it with a control medium through minimum three subcultures.
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Endotoxin Content
NMT 5EU/ml
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Uses
Laboratory chemicals, Manufacture of substances
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Personal Protection
Use personnel protective equipment. Wear disposable gloves, dust mask and eye protection. Avoid dust formation.
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Toxicological Information
NA
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Ordering
To order RPMI-1640 With Sodium bicarbonate and 20mM HEPES buffer Without L-Glutamine, please use the Cat. Nr.AL198-40X500ML and submit your purchase order by email or by fax. A discount is available for larger or bulk quantities, please contact us for more information
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Tips
Our specialists recommend you to follow carefully the pre-registered instructions for RPMI-1640 With Sodium bicarbonate and 20mM HEPES buffer Without L-Glutamine
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Additional description
Buffering solutions are useful to keep the pH range sable when using this reagent of Himedia.
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Buffer
25mM HEPES (4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid ) pH7 solution buffers are a media with a zwitterion organic chemical buffering agent; one of the twenty Good's buffers. HEPES DMEM medium is widely used in cell culture, largely because it is better at maintaining physiological pH 7 tot 7,5 despite changes in carbon dioxide concentration (produced by cellular respiration) when compared to bicarbonate buffers, which are also commonly used in cell culture. The dissociation of water decreases with falling temperature, but the dissociation constants (pK) of many other buffers do not change much with temperature. HEPES, 25 mM in RPMI and DMEM is like water in that its dissociation decreases as the temperature decreases. This makes HEPES RPMI 25 milli-molar media with or without L-glutamine a more effective buffering agent for maintaining enzyme structure and function at low temperatures.
