aw Reference Chart Shelf-Life Stability

Pet Food

The pet food sector spans several distinct product categories:

Product TypeTypical aw RangeKey Quality & Safety TargetRecommended Instrument
Dry Kibble I Hard Treats0.40 - 0.65Ensures microbiological stability and retains crunchiness. Above 0.65 au, kibble softens and becomes susceptible to mold.eFWM or eFWM-solo
Semi-Moist Food / Soft Treats060 - 0.85Maintains a soft texture. Requires preservatives or pH control, as mold can develop above 0.70 au,.eFAst-Lab or eFWM or eFWM-solo
Wet Food I Canned Food0.93 - 0.99High free-water content; relies on thermal sterilization (canningfretort) for preservation.eFAst-Lab

Sausages

For processed meat and sausages, au, values vary based on the drying and curing process:

Product TypeTypical aw RangeKey Quality & Safety TargetRecommended Instrument
Cooked / Smoked Sausages (e.g., Frankfurters, Hot Dogs)0.93 - 0.97Requires refrigeration and protective packaging (vacuum or MAP).eFAst-Lab.
Dry Cured Sausages (e.g., Salami, Pepperoni, Chorizo)0.70 - 0.90Intermediate moisture products. The critical threshold is usuallyau, < 0.91 (or 0.86 depending on PH) to stop the growth of pathogens like Salmonella or Staphylococcus aureus.eFAst-Lab
Fresh Sausages (e.g., Raw PorWBeef)0.96-0.99Very high moisture; requires continuous refrigeration and thorough cooking before consumption.eFAst-Lab
Meat Snacks I Snack Sticks0.65-0.75Shelf-stable at room temperature for extended periods.eFAst-Lab or eFWM

Table of Contents

Pet Food

The pet food sector spans several distinct product categories:

Product Type

Dry Kibble I Hard Treats

Typical aw Range

0.40 - 0.65

Key Quality & Safety Target

Ensures microbiological stability and retains crunchiness. Above 0.65 au, kibble softens and becomes susceptible to mold.

Recommended Instrument

eFWM or eFWM-solo

Product Type

Semi-Moist Food / Soft Treats

Typical aw Range

060 - 0.85

Key Quality & Safety Target

Maintains a soft texture. Requires preservatives or pH control, as mold can develop above 0.70 au,.

Recommended Instrument

eFAst-Lab or eFWM or eFWM-solo

Product Type

Wet Food I Canned Food

Typical aw Range

0.93 - 0.99

Key Quality & Safety Target

High free-water content; relies on thermal sterilization (canningfretort) for preservation.

Recommended Instrument

eFAst-Lab

Sausages

For processed meat and sausages, au, values vary based on the drying and curing process:

Product Type

Cooked / Smoked Sausages (e.g., Frankfurters, Hot Dogs)

Typical aw Range

0.93 - 0.97

Key Quality & Safety Target

Requires refrigeration and protective packaging (vacuum or MAP).

Recommended Instrument

eFAst-Lab.

Product Type

Dry Cured Sausages (e.g., Salami, Pepperoni, Chorizo)

Typical aw Range

0.70 - 0.90

Key Quality & Safety Target

Intermediate moisture products. The critical threshold is usuallyau, < 0.91 (or 0.86 depending on PH) to stop the growth of pathogens like Salmonella or Staphylococcus aureus.

Recommended Instrument

eFAst-Lab

Product Type

Fresh Sausages (e.g., Raw PorWBeef)

Typical aw Range

0.96-0.99

Key Quality & Safety Target

Very high moisture; requires continuous refrigeration and thorough cooking before consumption.

Recommended Instrument

eFAst-Lab

Product Type

Meat Snacks I Snack Sticks

Typical aw Range

0.65-0.75

Key Quality & Safety Target

Shelf-stable at room temperature for extended periods.

Recommended Instrument

eFAst-Lab or eFWM