Two Weights, Two Documents: Shipped and Conditioned Weight

You need two weights on the paperwork, each labelled, because the shipped weight and the conditioned weight answer different questions and the customs declaration needs the one that describes what moved. The weight the mill measured under standard conditions is the technical number that belongs with the specification, and it is the one your tolerance argument uses. The weight as shipped is the commercial and transport number, and it is the one the invoice, the packing list and the declaration have to agree on. Printing both, properly labelled, is what keeps the duty and the settlement honest.

Why a cloth has three weights

Textile fibres are hygroscopic: they take up and release water vapour with the surrounding air, so the same piece of cloth weighs different amounts on different days. That is why standards exist for measuring mass under a defined atmosphere, and why the number a mill records under those conditions is not the number a warehouse scale reports on a humid morning. The difference between the two is not small; on a wool-rich cloth it can be a couple of percent, which on a container is a line item.

So there are three numbers in play, and they should never be conflated. The dry or conditioned weight, measured to the agreed method. The weight as shipped, which is the conditioned weight plus whatever moisture the packing and the season added. And the weight as received, which is the third number and the one that will appear if a settlement is argued on arrival. Recording all three, with the conditions, is what makes a weight discussion a comparison rather than a disagreement.

Which number belongs where

The commercial documents should carry the shipped weight, because that is what left the factory and what the freight was calculated on. The packing list, the invoice and the transport document should agree with each other, and the declaration should be built from them, since a declaration built from a technical figure rather than the shipped one invites a mismatch that has to be explained later. Where the destination’s rules calculate charges by weight, that consistency is what avoids the review.

The technical documents carry the conditioned weight, because that is the number that compares to the specification. The mass-per-unit-area figure, the tolerance band, and the test report all belong to the conditioned basis, which is the same discipline the notes on weight and tolerance describe from the acceptance side. Mixing the two is how a cloth that is inside its specification on a conditioned basis gets rejected on a warehouse scale, and how a cloth that is genuinely light passes because the day was dry.

Making the paperwork consistent

Four items create the paper trail that a broker and a mill can both work from. A weight note per shipment, stating the conditioned weight, the shipped weight and the conditions under which each was taken. The roll tickets, summing to the shipment weight, so that the total can be reconciled to the individual rolls. The packing and transport documents, carrying the shipped weight consistently. And the test report, carrying the conditioned figures that the specification is judged against.

The consistency rule is worth a line in the order: the weight stated on the invoice, the packing list and the transport document is the shipped weight, and any technical weight appears in an annex marked as being measured under standard conditions. That single sentence prevents the common problem where the same shipment is described with two different weights on two documents and somebody at the port has to decide which one is real.

The settlement question: by weight or by metre

Weight and length are different measures, and the contract should say which one governs payment. Where the agreement is per metre, the weight is supporting evidence for the mass per unit area rather than the payment basis, and the conditioned weight is the number that matters. Where the agreement is per kilogram, the weight becomes the payment basis, and the two parties need to agree in advance which weight: the conditioned weight as recorded by the mill, or the weight as shipped and received. Getting that wrong turns a normal moisture variation into a dispute about money, and the honest way to settle it is to price the order on the conditioned basis and let the transport variation fall where the freight terms place it.

For a buyer comparing suppliers, the practical consequence is that price per kilogram and price per metre are not directly comparable unless the conditioning convention is the same. A quotation per kilogram that assumes a dry basis looks cheaper than the same cloth quoted on a conditioned basis, which is a comparison trap worth checking before the order rather than after.

Freight, duty and the weight that gets declared

Freight and duty follow the commercial documents, which is why the shipped weight is the one that has to be stated consistently there. The freight calculation uses the gross weight of the shipment, which includes packing, while the customs value is usually built on the transaction value of the goods rather than on the weight, so the two systems use different numbers for different purposes. What matters for the buyer is that each document describes the same shipment with the same figures, because an inconsistency between two documents is what triggers the second look.

The practical habit is a single weight page per shipment: net weight of the cloth by roll, gross weight with packing, the conditioned weight for the technical record, and the date and conditions of each measurement. A broker can build a declaration from that page, a mill can defend its figure from it, and a receiver can reconcile the arrival against it. It belongs in the shipment’s document set alongside the invoice, the packing list and the origin papers, which is the set described in the document set for a fabric shipment, and it is the page that turns three numbers into one story.

Why the mill’s figure is not a lie

When a mill reports a weight that the buyer’s scale does not reproduce, the first instinct is to suspect the mill. The more common explanation is conditioning: the mill measured under a standard atmosphere at the time of packing, the buyer weighed the cloth in a warehouse that was damp, and both numbers are correct for their conditions. The way to avoid the suspicion is to have the conditions written down on both sides from the start, which is why the weight note should state the temperature and humidity alongside the figure.

Where the two sides cannot agree on a number, the fallback is a retest under the agreed conditions with both parties’ figures set aside, which is the same arbitration logic that a tolerance clause uses. A retest costs a small amount and settles a question that correspondence cannot, and it is worth having the route written into the order before it is needed rather than agreed in the middle of a dispute.

When the two numbers disagree on arrival

Arrival is the moment both numbers exist in the same building, and the sequence to follow is short. Weigh the shipment as received, and record the conditions in the warehouse at the time. Compare against the shipped weight on the documents, and establish whether the difference is within the range that a voyage and a climate can explain. Where it is, the technical comparison continues on the conditioned basis using the mill’s figures and a retest if necessary. Where it is not, isolate the cause before claiming: a wet pack, a leaking container, a roll that absorbed water from a floor, each of which is a different claim against a different party.

The documents that decide it are the ones produced before the shipment rather than after. A weight note, a conditioned-weight annex, and an arrival record with the conditions written down are enough for a discussion that ends in a number. Without them, the same discussion ends in a compromise, and compromises on weight are always paid for by one side.

What to write into the order

Six lines. The measurement method and the conditioning standard for the technical weight. The requirement for a per-shipment weight note, showing both the conditioned weight and the shipped weight with its conditions. The rule that the invoice, packing list and transport document carry the shipped weight. The annex structure for the technical figures, so that they are present without being confused with the commercial ones. The payment basis, stated as per metre or per kilogram, with the weight convention named if it is per kilogram. And the arrival procedure: weigh and record, with the conditions, before the cloth is stored.

Taken together, that is a paragraph and one annex per shipment. It also closes the loop with the acceptance side, because a tolerance written on a conditioned basis and a shipment weighed on a warehouse scale can never be reconciled without both numbers on the same page, and the buyer who asks for both is the one who gets a decision instead of an argument.