Overview
ISO 5530-1:2025 - "Wheat flour - Physical characteristics of doughs - Part 1: Determination of water absorption and rheological properties using a farinograph" specifies a laboratory method to measure water absorption and the rheological (mixing) behaviour of wheat (Triticum aestivum L.) flours using a farinograph. The standard is applicable to experimental and commercial wheat flours and aligns with established methods such as ICC 115/1 and AACC Method 54-21.02.
Key topics and technical requirements
- Principle: Record dough consistency over time with a farinograph; adjust water to achieve a standard maximum consistency (500 FU) to determine water absorption and derive rheological parameters.
- Measured parameters:
- Water absorption (Wa) - volume of water (ml per 100 g flour at 14% moisture) needed to reach the defined consistency.
- Consistency (FU) - expressed in farinograph units or torque; maximum consistency, dough development time (DDT), stability, degree of softening and farinograph quality number (FQN).
- Procedures:
- Constant flour mass and constant dough mass procedures are both specified.
- Determination of flour moisture content by ISO 712-1 or NIR (NIR performance per ISO 12099; SEP ≤ 0.15%).
- Apparatus and conditions:
- Farinograph with specified blade speed (63 ± 2 min⁻¹) and torque calibration (values given for 300 g and 50 g mixers).
- Water dosing systems (burette or electronic dosing), mixing bowl temperature controlled at 30 ± 0.2 °C, balance (±0.1 g), and grade 3 water (ISO 3696).
- Quality and precision:
- Annexes include instrument description, typical farinogram examples, and results from an interlaboratory test (added in this edition) to inform repeatability and reproducibility.
Practical applications and users
- Quality control in flour mills: Routine measurement of water absorption to set hydration and mixing specs for production.
- Baking and cereal technology R&D: Assess flour strength, mixing tolerance, and formulation adjustments for bread-making performance.
- Ingredient suppliers and food labs: Compare flour lots, certify functional performance, and support product development.
- Equipment manufacturers and calibration labs: Verify farinograph performance against standard operating parameters.
- Regulatory and standards bodies: Harmonize test methods across laboratories and supply chain partners.
Related standards
- ICC 115/1 (related farinograph method)
- AACC Method 54-21.02
- ISO 712-1 (moisture reference method)
- ISO 3696 (water for analytical use)
- ISO 12099 (NIR method performance)
- ISO 24333 (sampling recommendation)
ISO 5530-1:2025 is essential for anyone needing reproducible, standardized farinograph data on wheat flour water absorption and dough rheology, supporting consistent baking performance and laboratory comparability.