This is exactly what the IBRG PDG methods are designed to determine:
The standardized test methods of the International Biodeterioration Research Group (IBRG) for evaluating the efficacy of biocidal products.

The focus is on preservation testing of water-based products, with the aim of assessing their efficacy against a defined spectrum of microorganisms using standardized methods.
An important basis for reliably and reproducibly evaluating the microbiological stability of water-based products.

✅ At HYG, we conduct tests in accordance with IBRG PDG, using suspension tests to realistically simulate the product’s actual conditions of use.

Save this post for when you are planning your testing — 𝘄𝗵𝗮𝘁 𝘆𝗼𝘂 𝗰𝗮𝗻 𝗲𝘅𝗽𝗲𝗰𝘁:

🧫 𝗗𝗲𝗳𝗶𝗻𝗲𝗱 𝗺𝘂𝗹𝘁𝗶-𝗼𝗿𝗴𝗮𝗻𝗶𝘀𝗺 𝗽𝗮𝗻𝗲𝗹 for a realistic assessment of antimicrobial efficacy
🧪 𝗦𝘂𝘀𝗽𝗲𝗻𝘀𝗶𝗼𝗻 𝘁𝗲𝘀𝘁𝘀 tailored to the actual use of your product
📊 𝗦𝘁𝗮𝘁𝗶𝘀𝘁𝗶𝗰𝗮𝗹𝗹𝘆 𝘀𝗼𝘂𝗻𝗱, 𝗿𝗲𝗽𝗿𝗼𝗱𝘂𝗰𝗶𝗯𝗹𝗲 𝗲𝘃𝗮𝗹𝘂𝗮𝘁𝗶𝗼𝗻 as a reliable basis for decision-making
📑 𝗖𝗹𝗲𝗮𝗿, 𝘁𝗿𝗮𝗻𝘀𝗽𝗮𝗿𝗲𝗻𝘁 𝗱𝗼𝗰𝘂𝗺𝗲𝗻𝘁𝗮𝘁𝗶𝗼𝗻
🤝 𝗘𝘅𝗽𝗲𝗿𝘁 𝗶𝗻𝘁𝗲𝗿𝗽𝗿𝗲𝘁𝗮𝘁𝗶𝗼𝗻 𝗼𝗳 𝘁𝗵𝗲 𝗿𝗲𝘀𝘂𝗹𝘁𝘀 — scientifically sound and without overinterpreting the data

Are you working on a formulation that requires this type of evidence? Save this post for your testing plans, or contact us directly — we would be happy to develop the right test design together with you.