What is SGS?
SGS · Société Générale de Surveillance
The largest independent inspection, testing and certification company in the world, founded in 1878 and headquartered in Geneva. In commodity trade its certificates of quality and weight are what a buyer, a bank and an insurer all rely on instead of taking the seller’s word.
Cargo surveyors explained: sampling, the assay, the draught survey and the umpire lab
A bulk shipload is worth millions of dollars, and its price depends on what is inside. Samples are taken from the conveyor as the ship loads, and the assay — metal, moisture and impurities — sets the final price. The draught survey weighs the cargo by how deep the ship sits: on a big bulk carrier, one centimetre of draught is more than 100 tonnes. Buyer and seller each send samples to their own lab; if the results are close they split the difference, and if not, a third, independent umpire lab decides. Moisture is a safety matter too: wet ore can liquefy and shift in heavy seas, as when the Bulk Jupiter sank off Vietnam in January 2015 carrying bauxite from Malaysia, with 18 of its 19 crew lost. In bulk commodities, the scale and the lab matter as much as the price.
Key points
- The largest independent inspection company in the world, founded 1878.
- Its certificates are what banks and insurers rely on, not the seller's word.
- Who appoints and who pays belongs in the contract — independence is the point.
At a glance
| Full name | Société Générale de Surveillance |
|---|---|
| Founded | 1878, Rouen; headquartered Geneva |
| Main services | Sampling, assay, weight determination, loading supervision |
| Bulk weight method | Draft survey |
| Main peers | Intertek, Bureau Veritas, Cotecna, Alfred H Knight, CIQ |
Who SGS are
SGS SA — Société Générale de Surveillance — was founded in Rouen in 1878 as a grain shipment inspection house and is now headquartered in Geneva. It is the largest inspection, verification, testing and certification company in the world, operating in most trading jurisdictions.
In physical commodity trade the name is used almost as a common noun. “SGS at load port” is shorthand for independent third-party inspection, whether or not SGS specifically is appointed. Its main peers are Intertek, Bureau Veritas, Cotecna and Alfred H Knight, and in China the state inspection body CIQ.
What SGS actually does on a cargo
On a typical shipment SGS performs some combination of sampling, quality analysis, weight determination and supervision of loading. For bulk cargoes weight is usually established by draft survey — measuring the vessel’s displacement before and after loading — and for containerised goods by weighbridge or tally.
The output is a set of certificates: a certificate of quality stating the measured specification, a certificate of weight, and often a certificate of origin or a loading supervision report. Those documents travel with the cargo and are what a letter of credit is examined against.
Why the appointment is a contract term
Independence is the entire point, so the contract should state who appoints and who pays, and whether the load-port result is binding. Common practice is that the load-port certificate is final for quality and weight, with a discharge-port check and an umpire laboratory if the two differ beyond an agreed tolerance.
A buyer accepting the seller’s in-house analysis instead of an independent certificate has no realistic route to a claim. That is the difference between a certificate of analysis from a producer’s own laboratory and an SGS certificate covering the parcel that actually sailed.
Frequently asked questions
- What does SGS stand for?
- Société Générale de Surveillance, French for General Society of Surveillance. The company was founded in 1878 and is headquartered in Geneva.
- What does an SGS certificate prove in commodity trade?
- That an independent inspector sampled and tested the specific parcel and measured its weight, at a stated place and date. It is evidence of quality and quantity at that moment, not a guarantee of condition on arrival.
- Is SGS inspection mandatory?
- Not by law in most trades, but it is effectively mandatory in practice: banks financing a cargo and insurers covering it generally require independent inspection documents, and some importing countries mandate pre-shipment inspection by an approved agency.
Related terms
Independent verification of quality, weight and packing at the load port before the cargo sails, typically by SGS, Intertek, Bureau Veritas or CIQ. It is the buyer’s main protection because a claim after discharge is far harder to enforce.
The laboratory document stating the measured composition of a specific parcel — purity, contaminants, moisture. It refers to the lot actually shipped, unlike a typical or datasheet analysis which describes what a plant usually produces.
The analytical determination of metal content in an ore, concentrate or refined product. Buyer and seller assays commonly differ slightly; contracts usually set a tolerance and appoint an umpire laboratory to settle disputes beyond it.
The reference iron content for seaborne iron ore fines and the basis of the main published index. Cargoes above or below the reference settle against published premiums and discounts rather than a flat renegotiation.
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