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National Measurement Institute
      

Pre-packed Goods

Download our Guide to the Sale of Pre-packed Goods.

Under national trade measurement legislation, manufacturers, packers, importers and sellers of pre-packed articles must:

  • ensure packages are correctly labelled; the laws include requirements for measurement marking and packer’s identification
  • ensure packages they import, pack or sell include a measurement marking;  
  • ensure the measurement marking  is accurate and does not include the weight of any packaging material
  • have appropriate measuring instruments: any measuring instruments used to perform compliance sampling must be suitable for the task, and properly maintained to ensure they remain accurate at all times
  • assist trade measurement inspectors with any enquiries and provide information if required.

Pre-packed Articles with Common Measurements

Manufacturers, packers and importers, can choose either of two methods for determining the measurement of pre-packed articles with common measurements or ‘constant nominal content’.

The first method is the system based on the uniform trade measurement legislation (UTML) adopted by the States and Territories before 2010 where:

  • the average content in a sample of pre-packed articles of the same kind and measurement cannot be less than the stated quantity marked on the packages;
  • no pre-packed article can have a shortfall greater than 5% of the stated quantity;
  • the permissible average deficiency in a sample of 12 or more articles is nil (see exceptions below) – an inspector will generally check 12 articles but can choose a number of packages greater than 12 for this sampling process, depending on the circumstances;
  • a small number of ‘desiccating’ goods (that is goods, such as mushrooms and soap, that lose moisture after packing) are allowed a greater permissible maximum deficiency and an average deficiency after the day of packing to reflect this moisture loss. You should check the detail of the trade measurement laws for these desiccating goods and the measurement-marking requirements.

The second system is the average quantity system (AQS), an internationally agreed method that was adopted in Australia in July 2010 as part of the new national trade measurement system. Under the AQS, manufacturers, packers and importers, must comply with three important rules:

  • the average net content in a sample from the production run of pre-packed articles cannot be less than the stated quantity marked on the packages;
  • allowance is made for a small number of pre-packages to exceed a ‘tolerable deficiency’
  • none of the pre-packages in the sample can have more than twice the prescribed tolerable deficiency.

Click here for more information on the average quantity system.

Pre-packed Articles with Differing Measurements

These articles are known as random-weight or catch-weight articles. It is not possible to undertake a sample because while they are the same kind of product, the measurement differs. It is not meaningful to calculate an ‘average’ measurement.

The measurement of any such article – whether it is expressed as weight, volume, number, area or length – must not be less than the measurement stated on the package label. The legislation does not allow for any deficiency in even a single package’s contents.

The legislation does not allow a deficiency for ‘desiccating’ goods, other than those identified that might dry out and lose weight. If the article is likely to lose weight over time through evaporation, dehydration or other means, the packer must make allowances for any expected losses in the measurement when packaging the product for the entirety of its shelf life. 

All goods pre-packed for sale must be marked with the net measurement (i.e. the weight of the contents without the packaging material).

Unit Price Marking for Retail Sale

Many pre-packed goods which are sold by weight (especially foods such as fruit, vegetables, cheese, meat, fish and smallgoods) are sold by unit price that is price per kilogram. These pre-packed articles should be marked in the required manner with the weight, price per kilogram and total price for the article.

Labelling Requirements

Shows correct positioning of a display label on a cylindrical container within a 60 degree arc

There are a number of detailed requirements for labelling in the national trade measurement laws to make sure that the buyer is properly informed.

Position of the Measurement Marking

The marking that states the measurement of the package (weight, volume, length, area or number) must be on the main display part of the package. It must also be shown on at least one of the other parts of the package if it is likely to be displayed to the buyer. There is an exception from this requirement for bottles or casks of wine.

When the package is substantially cylindrical, spherical, oval or conical, the measurement marking must be wholly contained within a 60º arc either side of the line drawn vertically through the centre of the main display panel (i.e. the measurement marking must lie within the shaded area shown in the figure).

Size of the Measurement Marking

The minimum character size of the measurement marking on a package depends on the maximum dimension of the package (see Table 1):

  • for rectangular packages the maximum dimension is the greater of the height, length or breadth of the package;
  • for cylindrical, oval etc. packages the maximum dimension is the greater of the height, length or diameter of the package.

If the measurement marking is stamped or embossed instead of printed, the character size must be at least three times the minimum printed character size in Table 1. If you use an NMI-approved printing device for the measurement marking, the characters must be at least 3 mm high.

 Table 1. The Minimum Character Size of Measurement Markings

Maximum dimension of package​

Minimum character height of printed numbers/letters​

120 mm or less​

2 mm​

Over 210 mm but not over 230 mm

2.5 mm​

231 to 360 mm ​231 to 360 mm ​

3.3 mm​

over 360 mm​

4.8 mm​

Units of Measurement and their Symbols 

Table 2 shows the units of measurement and the symbols allowed on measurement markings.

The degree of accuracy of a measurement marking, should not exceed three significant figures (unless the measurement marking is made by a printing device with NMI approval which allows for greater precision), e.g. 7.632 is not allowed; the correct measurement marking is 7.63.

Fractions of units must be shown as decimals and the decimal must be preceded by zero, or another numeral, e.g. ¼ kg must be shown as either 0.25 kg or 250 g.

Table 2. The units of measurement and the symbols allowed on measurement markings

 

Measurement units allowed​

Abbreviations allowed​

Abbreviations NOT allowed​

 Weight ​

kilogram​

kg​

KG, Kg, kilos​

gram ​

g (for any mass exceeding 1 000 g, use kg)​

G, gm, grammes, grm​

milligram​

mg​

MG, Mg, Mgram ​

Volume of liquids​

litre ​

L (lower case l is permitted but is better to avoid) ​

decilitre ​

dL​

Dl​

centilitre ​

cL​

Cl​

millilitre ​

mL (for any volume exceeding 1 000 mL use a bigger unit) ​

Ml​

Volume of solids

cubic metre​

m³​

cubic centimetre​

cm³ (for any solid exceeding 1 000 cm³ use a bigger unit)​

Linear​

metre​

m​

centimetre​

cm (if length does not exceed 100 cm) ​

millimetre*​

mm (if length does not exceed 1 000 mm)​

 

* Millimetre is also allowable:

  • for paper lengths up to 10 000, building material in sheet form and coated abrasive belts
  • to express the linear measurement of an article if its use was customary before introduction of the National Trade Measurement Regulations 2009.

Common Measurement Marking Mistakes

 Shows two columns. The first column shows three examples of incorrect measurement marking. Second column shows how to correct th

 

Name and Address of Packer

For articles packed in Australia, the name and address of the packer (or the person on whose behalf it was packed) must be clearly marked on the package. The address must be a street address within Australia. Post office boxes, email and website addresses are not permitted as substitutes for street addresses.

Trade measurement laws do not prescribe the size or location of the name and address of the packer, but the details should be clear and legible.

For imported food (which includes beverages and ingredients) the Australia New Zealand Food Standards Code (the Code) requires that the name and business address in Australia of the importer or seller must be clearly marked on the package. The Code is a collection of Australian and New Zealand food standards with the force of law.

Responsibilities of Packers, Importers and Sellers

Packers, importers and sellers, have a responsibility to ensure their company’s operations have systems in place to achieve compliance with the national trade measurement laws. They need to be able:

  • to show that the articles they sell are labelled correctly and the quantities contained in the articles meet the measurement requirements
  • to take responsibility for the accuracy and marking of packages which they import, produce or sell and make sure that staff, systems and equipment, comply with the trade measurement laws
  • to ensure that authority is delegated to competent staff and there is proper and ongoing training of staff and appropriate supervision of processes.

Packers need to make sure that their staff are fully aware of the requirements of the national trade measurement laws and can demonstrate that internal quality control systems are in place.

Importers should insist that their suppliers are aware of the requirements of the national trade measurement laws and can demonstrate that they comply with the laws in terms of quality control systems. They should have a quality control system to monitor and verify compliance of imported goods before distribution and sale.

Sellers should insist that their suppliers – both packers and importers – are aware of the requirements of the national trade measurement laws and can demonstrate that they comply with the laws and have in place quality control systems. They should have in place their own quality control system to monitor and verify compliance of the goods they sell.

While the method of checking the measurement of packages and recording the results of process and compliance sampling is not prescribed by law, the more extensive the checks and records, the more packers/importers/sellers can prove that they did everything in their power to ensure the correct measurement of the packages. The extent of these checks depends on each set of circumstances.

Packers, importers and sellers should:

  • demonstrate good operational practices in accordance with any appropriate recognised industry code which reflects trade measurement requirements
  • ensure processes and procedures include a checking and auditing loop to demonstrate compliance with the trade measurement legislation
  • make sure that researched and documented measurement records, with a history of past performance, are used to determine future fill settings
  • determine the sampling frequency based on the understanding of processes and procedures and natural process variabilities; in a high-volume mass production operation, process sampling would generally be a separate action from compliance sampling whereas, for smaller operations it may be practicable to merge these two sampling activities into one function
  • ensure work instructions and procedures include documentation such as training records, supervisory checks, measuring instrument checks and remedial actions and revised measurement targets.

What to do with Shortfall Packages

Sometimes compliance sampling might indicate that packages have a shortfall, i.e. the measurement of the package is less than that stated on the label. Remedial actions must be taken if:

  • a single package deficiency exceeds the permissible tolerance and/or
  • the average (or the weighted average in the context of AQS) measurements of sample packages is less than the nominal measurement marking.

In either case you will need to:

  •  identify the faulty packages
  •  remove them from your distribution channel, and place them in quarantine
  •  clearly mark the packages to prevent their inadvertent release
  •  report the details to senior management
  •  implement appropriate preventative measures.

Note: Even if non-compliant packages are sold at a substantial discount (or even given away) you still have to ensure that the correct measurement is marked on the package and that you comply with the trade measurement laws.

Identify the Causes and Take Remedial Action

  • Review processes and procedures including the efficiency and accuracy of process sampling.
  • Identify and adjust any faulty equipment or process. If this is not possible, tag out equipment identified as faulty.
  • Consider operator retraining or closer supervision if that seems appropriate.

Sort Quarantined Packages

  • Identify the packages which are excessively deficient and remove them.
  • Consider removing packages with permissible deficiencies in order to improve sample average to equal or exceed the nominal marked measurement. Recheck a sample of this revised batch of packages to ensure that it now complies with the marked measurement.

Re-labelling Packages

  • Re-labelling to a lesser marked measurement must be consistent with the trade measurement laws. However before re-labelling, consider whether this may cause marketing problems. Discuss this with your retailer. Buyers may expect a constant nominal quantity for particular-sized containers even though the laws may not require it.
  • A person who re-labels a package with a revised measurement marking is responsible for the accuracy of that measurement marking. The action of re-labelling with a revised measurement marking may also require the person to identify themselves as the packer. Hence, they would have to include their name and address on the package.

Repacking and Topping Up

  • Identify those individual packages which have failed due to excessive deficiency and repack or top them up. 
  • Apply the same procedure to packages with permissible deficiencies which are causing a failure of the average, in sufficient numbers to bring about a sample average that equals or exceeds the nominal marked measurement.
  • Re-check a sample of this revised batch of packages to ensure that it now complies with the marked measurement.
  • Consider other remedial actions if these procedures are uneconomic or impractical.

For more Information

The main laws covering trade measurement are the National Measurement Act 1960 and the National Trade Measurement Regulations 2009.

For more information contact 1300 686 664, infotm@measurement.gov.au or use our on-line form.