The amount of total sample to be collected is dependent on the maximum nominal size of the aggregate. The quantity of the total sample should be of such quantity, so that necessary tests can be done to judge its quality. A sample of the aggregate is collected using a sample scoop.

How much sample should we collect in total

take a number Salary increment (at least 10), at regular intervals, so that the minimum amount of the gross sample is equal to the amount given in the following table.

Minimum weight of gross sample

Maximum Nominal Size of Gross(mm)	Minimum Weight of Gross Sample (kg)
for fine aggregate
2.36	10
4.75	10
for coarse aggregate
9.5	10
10	10
12.5	15
13.2	15
16.0	20
19.0	25
20.0	25
25.0	50
37.5	75
40.0	80
50.0	100
63.0	125
75.0	150
80.0	160
90.0	175

notes

The minimum amount of gross sample to be collected is 10 kg.
For aggregates with a maximum nominal size greater than 20 mm, the minimum weight (in kg) of the aggregate sample is twice its maximum nominal size.
For all aggregates, the minimum weight of the gross sample shall be the mass of the coarse aggregate (minimum) plus 10 kg.
One Salary increment Means the amount of aggregates received by a sampling instrument at a time.