ISO 5306:1983

Overview

ISO 5306:1983 - Fertilizers - Presentation of sampling reports specifies the information that must appear in sampling reports for consignments of fertilizers. Published in 1983, this International Standard ensures consistent documentation when samples are taken from bulk or packaged fertilizer lots. It requires a sampling report for every sample; when a sample is divided into equivalent portions, a copy of the report must accompany each portion. An example report form is provided in the annex.

Key topics and requirements

The standard focuses on clear, traceable reporting rather than laboratory test methods. Important technical topics and required report elements include:

• Identification of sampler and organization - name, department and signature of the sampler (and any independent witness).
• Product identification - name, description/designation, bulk or packaged status, lot/consignment numbers, and any declared composition or labels.
• Quantity and relation to lot - mass or number of packages sampled and how this relates to the total consignment.
• Packaging and sealing - type of packages, method of sealing and description of seals applied to sample containers.
• Sampling plan and increments - sampling plan used, number of increments taken and whether sampling followed an ISO or other standard.
• Sampling method and location - where and how sampling was done (e.g., from conveyor, truck, ship, silo; manually or with automatic/rotary samplers; goods at rest or in motion).
• Sample reduction and final samples - methods for reducing bulk samples (rotary sample divider, static divider, coning and quartering) and the number/identification of final samples.
• Observations and condition - visual condition, deterioration, contamination, uniformity, and any special observations during sampling.
• Logistics and traceability - date, time, sampling place, vessel/vehicle IDs, destination of laboratory samples, and parties to the transaction (producer, purchaser, importer).
• Accompanying documentation - reference to delivery notes, invoices or guarantees when available.

Applications and users

ISO 5306 is practical for organizations involved in fertilizer trade, quality control and regulatory compliance, including:

• Fertilizer manufacturers and packers (quality assurance and dispatch records)
• Importers, exporters and traders (consignment verification)
• Inspection bodies and regulatory authorities (sampling documentation for legal or compliance testing)
• Analytical laboratories (traceable sample chain-of-custody and sample identification)
• Customs and port authorities (clear reporting when sampling during transit)

Using ISO 5306 helps ensure consistent, auditable sampling reports that support laboratory analysis, dispute resolution and regulatory compliance.

Related standards

The standard was developed by ISO/TC 134 (Fertilizers and soil conditioners) and is intended to be used with any applicable national or international sampling regulations or standards that govern sampling plans and analysis procedures. When sampling follows another standard, ISO 5306 recommends referencing that standard in the report.