OIML RECCOMENDATION R87LENGTH, AREA & COUNT

Ben AitkenTrading Standards OfficerTrading Standards MBIENew Zealand

Kevin Gudmundsson Legal Metrology AdvisorTrading Standards MBIENew Zealand

Length / Area / Count

OIML R87 extends to cover pre-packaged goods sold by length, area and count

Each of Length, Area & Count has its own unique tolerable deficiency, stated in Table 2, of R87

Length / Area / Count

Sampling plans for goods sold by length, area or count are derived from R87 Table 1, Sampling plans for prepackages

Length / Area / Count

OIML R87 extends to cover pre-packaged goods sold by length, area and count

Qn = Nominal quantity of goods

Length / Area / Count

Length

Nominal Quantity of Product (Qn) in length

Percent of Qn

Qn ≤ 5 m No tolerable deficiency allowed

Qn >5 m 2

Length / Area / Count

What sort of prepackaged goods are sold by length?

Length / Area / Count

Example

Length / Area / Count

Length / Area / Count

Area

Nominal Quantity of Product (Qn) in area

Percent of Qn

All Qn 3

Length / Area / Count

CountNominal Quantity of Product

(Qn) in countPercent of Qn

Qn ≤ 50 items No tolerable deficiency allowed

Qn >50 items 1b

b Compute the value of T by multiplying the nominal quantity by 1% and rounding the result up to the next whole number. The value may be larger than 1% due to the rounding but this is accepted because the products are whole items and cannot be divided

Length / Area / Count

Test Equipment

May include;• Length measure– Tape Measure, or– Ruler

• Suitable weighing instrument? • Test masses?

Length / Area / Count

Tare determination

Unless using a weighing instrument to determine errors there is no need to determine the average tare weight

Length / Area / Count

Sample Selection

Establish the Inspection lot size and determine the sample size by referencing Table 1, Sampling plans for pre-packages from R87

Length / Area / Count

Sample Selection

Table 1, Sampling plans for pre-packages from R87

Length / Area / Count

Tolerable Deficiency

Calculate the tolerable deficiency by referencing the appropriate section of Table 2, Tolerable deficiencies in actual content for pre-packages

Length / Area / Count

• Conduct AQS inspection by determining the error for all individual pre-packages within the sample

• Determine if sample meets the requirements of AQS • 3 Packers Rules

• Determine if inspection lot passes or fails

Length / Area / Count

• ExerciseAQS by count

Length / Area / Count

Thank you for your attention

Any Questions?