Equipment gaps, joints, valves, and irregular surfaces. 3. Sponge and Cloth Methods
A: No. The standard is designed for bacteria and fungi. Viruses require molecular swabbing methods (e.g., ISO 15216).
Ensuring food safety and hygiene in the food industry requires stringent monitoring of manufacturing environments, equipment, and storage facilities. serves as the definitive international standard for detecting and enumerating culturable microorganisms on surfaces that come into contact with food.
: For assessing contamination risks and verifying the effectiveness of corrective actions.
Small, recessed, or hard-to-reach areas (e.g., pipe interiors, bolts, cracks, filler nozzles). Equipment gaps, joints, valves, and irregular surfaces
To successfully comply with ISO 18593, ensure your facility adheres to the following checklist:
The standard consists of several key components, including:
Master Food Safety: A Guide to ISO 18593 for Surface Sampling
A sterile swab, moistened with a diluent, is rubbed over a defined area (e.g., 100 cm²). The standard is designed for bacteria and fungi
This article serves as your complete resource. We will explore what ISO 18593 covers, why it is vital for the food and animal feed industries, how to obtain the official PDF, and the practical steps to implement its sampling techniques.
For food safety managers, mastering the methods within ISO 18593 is not just a regulatory box-ticking exercise—it is a crucial step in protecting public health and brand reputation.
Use the chosen method (swab, sponge, contact plate) to cover the defined area.
ISO 18593:2018 (Microbiology of the food chain — Horizontal methods for surface sampling) is the current international standard for detecting and counting culturable microorganisms on surfaces in the food industry. ISO - International Organization for Standardization Purpose and Scope the standard mandates:
If your lab employs the "sponge method" (whirl-pak sponges), note that ISO 18593 permits swabs but does not explicitly detail the sponge method. Many labs use this standard as the principle while validating sponges separately.
While it provides the how , it does not mandate when or how often to sample; these are determined by the facility’s specific risk-based HACCP plan.
Microorganisms collected from surfaces are often stressed or sublethally injured. To prevent them from dying or multiplying before analysis, the standard mandates:
