AM Scientific

HiMedia PolyB Selective Supplement (FD003) is a sterile, lyophilized antibiotic supplement containing 50,000 units of Polymyxin B sulfate per vial. It is designed to selectively isolate Bacillus cereus by inhibiting Gram-negative bacteria in culture media, typically used with MYP or Bacillus Cereus Agar bases, requiring 2 ml of sterile distilled water for rehydration. Key Details and Specifications:

• Product Code: FD003
• Component: Polymyxin B sulphate (50,000 Units/vial)
• Application: Used for selective isolation of Bacillus cereus and related species.
• Usage: One vial is sufficient for 500-1000 ml of medium.
• Preparation: Aseptically rehydrate contents with 2 ml sterile distilled water.
• Compatible Media:
  • Bacillus Cereus Agar Base (M833, MV833, MCD833)
  • MYP Agar Base (M636, M636S, MV636, GM636, MCD636)
  • KG Agar Base (M658, MV658)
  • Modified MYP Agar Base (M1139, MV1139)
• Storage: 2-8°C, preferably stored in a dry place.
• Mechanism: Acts as a cationic detergent on cell membranes, inhibiting unwanted contaminating flora in food and clinical samples. 

Merck (Sigma-Aldrich) offers high-purity Acetone for chromatography, specifically under the LiChrosolv® grade for HPLC and Suprasolv® for GC applications. It features  purity, low UV absorbance, low evaporation residue, and microfiltration (0.2 ) to ensure reproducible separations and protect columns. Key Specifications & Description (LiChrosolv®):

• Grade: LiChrosolv® (liquid chromatography) or Suprasolv® (gas chromatography).
• Purity:  (GC).
• CAS Number: 67-64-1.
• Formula: .
• Suitability: Tested for UV-VIS spectrophotometry, HPLC, and MS (positive/negative ESI <2/10 ppb).
• Physical Properties: Clear, colorless, highly volatile liquid, density  at .
• Packaging: Often packed in borosilicate glass for reduced metal contamination.