As 99.00 % min
No other elements specified.
Lumpy – fist size and downwards.
Original producer’s poly-lined steel drums, each 50 KG net, in accorance with the IMDG code and RID & ADR Rules. Drums should be clearly marked and labelled in accordance with IMDG regulations.
Lot Size & Tolerance
1 MT (+/- 2%)
Standard documentation, as per MMTA Consolidated Regulations.
Weighing & Sampling
As per MMTA Consolidated Regulations with gross weights to be established by holding warehouse.
……………………………………….. (sampling and assaying guidance below is optional)……………………………..
Open all containers, making note of any different markings, forms or indications of heterogeneity. Opening all the containers may well be impractical, alternatively open at least 20 drums for a 1 MT parcel increasing by a 4 further drums for each subsequent sub lot of 1 MT. That is to say 24 drums for 2 MT, 28 drums for 3 MT, 32 drums for 4 MT etc.
If there are no indications of material heterogeneity then sample on an incremental basis of 1 MT sub lots. If heterogeneity is suspected select the incremental groups accordingly but in sublots of 1 MT or less. Tip 10% of the open drums and make a size estimation of the material say in to three fractions:- > 50 mm, 10 mm to 50 mm, and < 10 mm. Remove samples of both the smaller fractions by the most practicable means of selection available, and then take a random lump of the > 50 mm material from each of the open drums, these should be hand crushed on a clean sheet and reduced to approximately 10 to 15 mm sizing and well mixed. A proportional bulk sample of manageable size can now be prepared in proportion from the three fractions. Where heterogeneity or contamination is suspected it may be considered necessary to segregate certain drums and prepare samples separately.
This bulk sample can then be crushed to < 0.18 mm sizing, mixed and reduced by coning and quartering to give a final sample for reduction to nominally < 0.075 mm and subdivision into quality samples. Where considered desirable each sub lot can be treated to produce an individual bulk sample which can either all contribute to give a composite sample or be treated individually to give a series of quality samples.
The balance of the bulk samples being held for reference purposes.