Heart Infusion Agar | Nutrient‑Rich Medium for Fastidious Microorganisms | AS‑1246
Heart Infusion Agar
Highly Nutritious Agar for Fastidious Microorganisms
Heart Infusion Agar is a rich, non-selective, general-purpose solid medium designed for the isolation and cultivation of fastidious microorganisms. It is widely used in clinical and research microbiology as a nutritive agar for delicate organisms and also serves as an excellent base for blood agar preparation when haemolytic reactions need to be observed.
Why Labs Use HI Agar
Blood agar preparation
Haemolysis studies
Vaccine culture work
⚠️ Important: Heart Infusion Agar vs Heart Infusion Broth
A solid enriched medium for colony isolation, cultivation, plate observation, and use as a blood agar base for haemolytic reactions. :contentReference[oaicite:1]{index=1}
A liquid enriched medium better suited to propagation, suspension growth, and broth-based recovery or maintenance workflows.
🔬 Technical Overview & Principle
Heart Infusion Agar is a highly nutritious, non-selective solid medium recommended for the isolation and cultivation of a broad variety of fastidious organisms. Published product sheets describe it as suitable for routine cultivation of demanding bacteria and note that it can also be used as a base for preparing blood agar for haemolysis determination. :contentReference[oaicite:2]{index=2}
Because the medium is rich but not inhibitory, it is useful where strong nutritional support is needed without selective agents or dyes. It has also been described as suitable for Vibrio cultivation, for supplement-based adaptations, and for mass cultivation of organisms in vaccine-related workflows. :contentReference[oaicite:3]{index=3}
Heart infusion provides rich soluble nutrients, tryptose contributes peptides and amino acids, sodium chloride maintains osmotic balance, and agar creates a firm surface for colony development and observation. This simple but nutrient-dense composition is why HI Agar remains a useful classical medium in clinical microbiology. :contentReference[oaicite:4]{index=4}
🧪 Typical Composition
🧫 Typical Laboratory Use Workflow
Reconstitute and sterilise according to the product instructions and validated laboratory method for enriched agar preparation.
The medium may be used as an enriched non-selective agar on its own, or it may serve as a blood agar base for haemolytic reaction studies. :contentReference[oaicite:11]{index=11}
Inoculate with the target isolate or specimen and incubate under organism-appropriate conditions. Because the medium is non-selective, it is best suited to clean specimens or controlled workflows where broad recovery is desired.
Use the plate for colony isolation, fastidious organism recovery, or haemolytic pattern observation when prepared as blood agar.
📊 Comparative Enriched Solid Media
📌 Quick Specifications
⭐ Key Advantages
⚙️ Preparation Notes
Prepare according to the product instructions and your validated laboratory method.
For blood agar preparation, add sterile blood only after the basal medium has cooled to the appropriate temperature.
Because the medium is non-selective, good aseptic handling is important for reliable isolation performance.
🔗 Related AuSaMicS Products
Heart Infusion Broth
Liquid counterpart for propagation and enriched broth workflows
Brain Heart Infusion Agar
Broader enriched agar for maintenance and cultivation of fastidious microbes
Blood Agar Base Media
Complementary media for blood-enriched isolation workflows
Reliable Enriched Agar for Fastidious Organism Isolation
AuSaMicS supplies high-quality microbiological media designed for dependable performance in clinical, research, and industrial laboratories. Contact us for technical documentation, bulk supply, or method-aligned support.
For laboratory, research, and industrial use only. Not for food, feed, household, cosmetic, therapeutic, or personal use.
AuSaMicS Pty Ltd • ABN 56 676 640 467 • 31 Longview CT, Thomastown, VIC 3074, Australia
www.ausamics.com.au • support@ausamics.com • +61 412 520 598