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Food safety and quality management is of critical importance to the Australian grain industry.

We are committed to providing consistent, quality products and services to meet our customer and regulatory requirements. All our facilities are ISO 22000:2018 accredited to meet the highest international standards of food safety management and all grain storage and handling employees undergo food safety and quality training.

Growers play a critical role in protecting the reputation of the Australian grain industry by following effective food safety and vehicle hygiene practices on farm and when carting grain to storage and handling facilities.


At Viterra, food safety and quality management is integrated into all of our activities and operations.


Managing chemical residues

Viterra subscribes to the National Residue Survey (NRS) – a crucial part of the Australian system for managing risks of chemical residues in Australian food products.

To support this program, Viterra conducts chemical residue testing on composite partition samples throughout harvest. Viterra may also collect individual grower load samples for chemical residue traceability.

Growers play a critical role in upholding South Australia’s grain quality. When applying chemicals, at all times growers should adhere to:

  • withholding periods
  • label instructions
  • application rates
  • safe operating procedures.

It is critical that only registered/approved chemicals are used on crops and any chemicals applied are appropriately declared when delivering grain.

If a breach to the Australian maximum residue limit (MRL) is detected, Viterra is obliged to provide its traceability results to Biosecurity South Australia which may trigger an investigation.

Any breaches to Australian MRLs may also be followed up through Viterra’s contaminated grain process.

Information on the current Australian and international MRLs can be found on the Department of Agriculture and Water Resource’s website

Managing contaminants

All domestic and export markets for Australia’s grain have a low or nil tolerance for chemical residues and contaminants.

To maintain grain quality and access to export markets, Viterra has a nil tolerance for:


All equipment used for holding, transferring and carrying grain must be inspected and cleaned prior to use. Particular attention should be paid to augers, bins and harvesters that may not have been used for some time and therefore might contain traces of old or pickled grain, fertiliser (especially with the additive Flutriafol) or rodent control measures.

Growers and carriers have an obligation to cease loading on farm if contaminants are found.

Growers need to be aware that:

  • if a contaminant is detected at classification the load will be declined.
  • if a contaminant is detected whilst a load is discharging the grower will be financially liable.

Growers using carriers are required to ensure the carrier’struck is clean before loading the grain as growers are accountable got the delivery of grain.


Refer to the full list of contaminants in line with each receival standard.

Vehicle hygiene

Ensure any vehicle that is carrying grain meets the required cleanliness standards as per the Prior Load Matrix. Growers using carriers must ensure the carrier’s truck is clean before loading the grain as growers are accountable for the delivery of grain.

The Prior Load Matrix outlines the correct procedures for cleaning your vehicle to the acceptable standards, in line with what has previously been carried in that vehicle.

The matrix covers vehicles carting commodities and products handled by Viterra.

Vehicles are required to be fit for purpose and presented clean upon arrival. Vehicles and tarpaulins that are not cleaned or free of contaminants will not be loaded.

It is mandatory to declare the last load for grower receivals. All other movement-types require the last three loads to be declared.

Growers should also refer to the full Viterra Road Vehicle Hygiene Requirements.