Invoice Determination
Accounting mechanisms calculate the payable weight of raw textile fibres by adjusting measured scale mass for standard moisture regain allowances. Commercial mass settlement establishes the financial billing weight of scutched flax, tow or spun linen yarn traded between European suppliers and Chinese import mills. The procedure removes moisture fluctuations caused by marine transport, which stabilizes trading values against variable atmospheric conditions.
Chinese standard GB/T 9994 codifies the official moisture regain rates applied during commercial clearance calculations. Laboratory staff establish the oven dry mass of representative fibre samples drawn from arriving containers.
Moisture Correction
Conditioning ovens extract all unbound water from test specimens until mass loss ceases under controlled heating temperatures. Commercial mass settlement applies a legal moisture regain of twelve percent to the oven dry mass of scutched flax fibre, yielding the commercial mass that forms the basis of the final supplier invoice. If a container of long flax fibre arrives at fourteen percent moisture content, the commercial mass calculation reduces the billable weight below the gross scale weight recorded at the port.
Discrepancies between the packing list weight and the calculated settlement weight require formal adjustments through a commercial credit note. The calculation formula excludes packaging materials, binding wires and container tare weight.
Trade Settlement
Financial clearance occurs when customs inspection certificates confirm that moisture tests meet statutory sampling guidelines. Commercial mass settlement protects linen spinning mills from paying raw fibre prices for excess water absorbed during ocean transport. The resulting mass figure enters the customs declaration documentation, mill inventory ledgers and banking letters of credit.
When fibre lots arrive below standard moisture content, the calculation increases the invoiced mass above the dry scale reading, compensating the overseas merchant for deliverable fibre substance. The agreed commercial mass recorded on the laboratory test certificate binds both buyer and seller under the raw material procurement agreement.
