Paragraph 30 Method of Use

Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below:

Sch 5, para 4 am by Seed (Registration, Licensing and Enforcement) 2004 reg 2(1), (4)(a)
Sch 5, para 6 am by Seed (Registration, Licensing and Enforcement) 2004 reg 2(1), (4)(b)
Sch. 5 para. 13 Table word substituted by Seed 2007 reg. 8(a)
Sch. 5 para. 13 Table words inserted by Oil and Fibre Plant Seed 2003 reg. 3(3)

The method of using a riffle divider shall be as follows—

(a)

the divider shall be placed on a firm level surface;

(b)

the divider and pans shall be clean;

Sample Mixing

(c)

an empty pan shall be placed on each side of the divider to receive the discharge from the chutes;

(d)

the entire composite sample shall be poured evenly into the other pan(s);

(e)

the seed shall then be poured from the pan(s) evenly along the entire length of the hopper;

(f)

the two pans into which the seed has passed shall then be replaced with empty pans;

(g)

procedures (e) and (f) shall then be repeated twice to mix the sample thoroughly;

Sample Reduction

(h)

before reduction, the composite samples shall have been thoroughly mixed using procedures (c) to (g). The contents of one of the two receiving pans shall then be set aside. If the seed in the second pan is of at least the prescribed minimum weight for a submitted sample of a particular species of seed, it may be used as the submitted sample. If the weight of seed in the second pan is greater than the appropriate prescribed minimum weight for a submitted sample, it may be reduced using the procedures specified in sub-paragraphs (i) to (k);

(i)

an empty pan shall be placed on each side of the divider to receive the discharge from the chutes;

(j)

the contents of the second pan shall be poured evenly along the entire length of the hopper;

(k)

the contents of one of the two pans into which the seed has been passed shall then be set aside. If the weight of seed in the other pan is still greater than the appropriate prescribed minimum weight for the submitted sample, it may be submitted intact or it may be reduced further using the procedures specified in sub-paragraphs (i) to (k);

(l)

if the weight of seed in either of the two pans at either (h) or (k) is less than the appropriate prescribed minimum weight for a submitted sample, the procedures specified in sub-paragraphs (m) to (q) shall be used;

(m)

an empty pan shall be placed on each side of the divider to received the discharge from the chutes;

(n)

the contents of one of the pans shall be set aside. The contents of the other pan shall be poured evenly along the entire length of the hopper;

(o)

one receiving pan and its contents shall than be removed and replaced with an empty pan. The other pan, with its contents, shall be left in place;

(p)

the contents of the pan removed at (o) shall be poured evenly along the entire length of the hopper so that two subsamples of different weight shall be produced;

(q)

the procedures specified in sub-paragraphs (o) and (p) when repeated, constitute the process of continuous halving, and shall be repeated using whichever subsample is appropriate until sufficient seed is obtained in one pan, which when added to the seed set aside at (n) produces a submitted sample of at least the appropriate prescribed minimum weight;

Obtaining more than one submitted sample

(r)

two submitted samples shall be obtained from a composite sample by first obtaining a sample of at least twice the appropriate prescribed minimum weight for a submitted sample, using the procedures specified in sub-paragraphs (c) to (g) and (h) to (q) as appropriate, and then dividing it into two parts by passing it once through the divider;

(s)

when three submitted samples are required from one composite sample, one sample of at least the appropriate prescribed minimum weight for a submitted sample, shall be extracted using the procedures specified in sub-paragraphs (c) to (g) and (h) to (q) as appropriate. All portions of seed which have been set aside shall then be recombined and the residue of the composite sample so obtained shall be subject to the procedure specified at sub-paragraph (r).