Culture media and broths
An order for culture media needs more detail than the familiar name on a bottle. The same medium family may be offered as powder, prepared plates or filled containers, with different supplements and packaging. This range covers blood and chocolate agar, selective and differential media, fungal media and broths. Start with the formulation your laboratory has approved, then describe how you want it supplied.
Useful details for your quote
- Medium name and formulation or current product reference
- Powder mass, prepared volume or plate diameter and format
- Blood, enrichment, antibiotic or other supplement requirements
- Pack quantity and expected monthly consumption
- Storage conditions and minimum remaining shelf life
Distinguish the base from the finished medium
A dehydrated base is a different purchase from a supplemented, ready-to-use product. Ask whether necessary additions are included or quoted separately. For blood-containing media, identify the requested blood source and formulation instead of assuming every blood agar presentation will match the current bench stock.
Match the medium to the documented application
Blood agar, chocolate agar, MacConkey, CLED, EMB and XLD are distinct entries because their formulations serve different laboratory requirements. A similar-looking plate or shared ingredient does not establish equivalence. State the application and method reference so an alternative can be reviewed deliberately rather than substituted at dispatch.
Order broth by identity and presentation
Nutrient broth, tryptic soy broth and brain heart infusion broth should have separate lines. Selective enrichment broths need their specific formulation, not merely “enrichment broth”. A bottle count without fill volume is incomplete; a powder request should use mass rather than an assumed number of preparations.
Plan stock around the format
Prepared plates need space for their packaged size and stated storage conditions. Powder containers may suit some laboratories, but the decision must account for preparation resources and supplementary materials. State the desired delivery schedule and ask for proposed lot expiry dates rather than ordering a large pack solely because it appears cheaper.
What should be visible on the quotation?
Look for an exact manufacturer reference, formulation, supply format, unit quantity and included supplements. Request the product specification and relevant quality certificate. For split plates, identify both compartments, as a biplate is not the same unit as a full plate of either medium.
Common questions
Can I order a powder and matching supplement together?
Yes. Put both on the request and ask for their compatibility to be confirmed. State whether you need separate containers or a complete prepared presentation.
Are prepared plates always the same diameter?
No format should be assumed. Give diameter, single or divided layout and plates per pack; these affect handling and price comparison.
How do I request an unfamiliar formulation?
Provide the full name from the method, a current label or a specification. Describe the application and acceptable format without selecting by abbreviation alone.