Determination of Bast Fiber Fineness via Standardized Low-Pressure Air Permeability
Low-pressure air permeability tests determine bast fiber fineness by measuring specific surface area across standardized compressed fiber plugs under ISO 2370.
Commercial Price Adjustment
Settlement Formula
Financial settlements based on fiber quality deviations allow for the reconciliation of contract values after laboratory inspection. Implementing a commercial price adjustment provides a formulaic way to reduce the final invoice when the delivered flax fails to meet the agreed moisture or impurity thresholds. It ensures that the mill only pays for the usable cellulosic content.
Quality Deduction
Calculations usually subtract the weight of excess moisture or shive from the gross weight of the shipment. When a batch shows a measurable deviation from the standard moisture regain, the buyer applies a proportionate discount to the unit price. This process keeps the transaction fair even when environmental conditions during transport affect the material.
In a typical scenario, a mill receiving flax with twelve percent moisture instead of the contracted ten percent would reduce the invoice by two percent to account for the water weight. Such transparency prevents disputes during the final payment stage.
Contractual Provision
Agreements between the supplier and the weaver specify the precise tolerances allowed before a penalty triggers. If the impurity level exceeds the limit, the discount rate may increase to cover the cost of additional cleaning. Proper documentation of these adjustments maintains the relationship between the mill and the exporter.