STBIO MEDIAST BIO, INC.STBIO MEDIA, INC.

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How should dehydrated media and peptones be stored, and how long after opening can they be used?

Ditulis dan disemak oleh pasukan teknikal STBIODiterbitkan

Unopened

  • Store at 2 to 30 °C, dry and away from light, with the cap or bag tightly sealed.
  • The expiry on the label and specification sheet applies to unopened containers stored correctly.
  • Avoid refrigerator doors and other places where condensation forms; temperature swings do more harm than room temperature itself.

After opening

  • Dehydrated media and peptones are hygroscopic. Reseal immediately after each use; split large packs into smaller portions or add a desiccant to the pack.
  • Use within about six months of opening. If the powder is still free-flowing, the colour and odour are unchanged and the solution is clear, the product is normally still fit for use.
  • Prepared broths and plates have their own shelf life: poured plates typically keep two to four weeks refrigerated, less when they contain antibiotics or dyes.

Signs of deterioration

  • Hard caking or a clearly darker colour.
  • Cloudiness or undissolved particles after preparation.
  • pH outside specification after preparation.
  • Reduced performance: control strains grow less well than before.

Do not use a deteriorated lot for routine testing. Switch to a fresh lot and keep a sample of the old one for investigation.

Ditulis dan disemak oleh pasukan teknikal STBIOSTBIO MEDIA mengeluarkan pepton dan media kultur mikrob sejak 2002, dengan pensijilan ISO 22000 dan Halal serta makmal QC dalaman.

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