ISO 5530-1:2025

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.