PAES 203:2000

Question 1

amount of moisture in the grain expressed as percentage of the total weight of the sample, wet basis

Answer 1

moisture content

Question 2

method of grain moisture determination based on actual extraction of water either by convection heating (oven method) or distillation

Answer 2

primary method

Question 3

method of grain moisture determination based on some characteristics of the grain sample such as electrical resistance and capacitance which are related to moisture content and must be periodically calibrated against an official primary method

Answer 3

secondary method

Question 4

accurate balance graduated to permit 0.001g reading and accuracy of + 0.001g

Answer 4

analytical balance

Question 5

clean, heavy glass with ground-on cover with knob, and should contain standard desiccant
(i.e. silica gel)

Answer 5

desiccator

Question 6

– laboratory mill, having the following characteristics:

3.3.1 made of material which does not absorb moisture;

3.3.2 easy to clean and having as little dead space as possible;

3.3.3 enabling grinding to be carried out rapidly and uniformly, without appreciable development of heat and as far as possible without contact with the outside air.

Answer 6

grinding mill

Question 7

drying containers with lid, having a diameter of at least 50 mm. (Aluminum/pyrex glass drying containers with cover, capacity = 30ml with 50 mm diameter.)

Answer 7

moisture dishes

Question 8

ventilated drying oven with temperature range that can be regulated

Answer 8

Oven

Question 9

(e.g. capacitance type, resistance type etc.)

Answer 9

secondary moisture meters

Question 10

(e.g. sack-type spears or triers, shovels etc.)

Answer 10

sampling apparatus

Question 11

The moisture meter shall be calibrated every ?

Answer 11

6 months

Question 12

This device consists of a hopper mounted over a cone, which has a number of small collecting bins around its base. In operation, the divider is set on a level surface.

Answer 12

Sample divider

Question 13

In most cases the size of sample collected is large, making it difficult to manage. A method that may be used to reduce these samples to a manageable level and yet still possess the same characteristic elements present in the whole population is called?

Answer 13

Coning and quartering

Question 14

Moisture content measurements should be measured when the grain has?

Answer 14

cooled to ambient temperature.