3 General requirements
3.1 The sampling must be performed by the sampling must be trained and certified by the party representative sampling. When necessary, the third-party monitoring.
3.2 Samples taken must be representative of the entire batch of fertilizer.
3.3 No samples in the packaging torn, wet, deformed. In the course of sampling and sample transport, make sure to avoid the impact of external factors, holding the sample at baseline status quo until brought to the laboratory.
4 Sampling tools, containers samples
4.1 General Requirements
Depending on the type of fertilizer, the use of sampling tools, various sample containers accordingly.
the sampling tools must be made of materials which do not affect the quality of fertilizer (often made of polymer, glass or stainless metal, stainless steel, composite ...).
4.2 The sampling instruments, split samples, sample containers commonly used (see Appendix A)
4.2.1 pipes tattoo
tattoo pipes are tubes offices have different sizes depending on unit size packs of fertilizer plot, used to get solid fertilizers (particles or pellets, powders) are in bags or in piles of ... pipes must have a tattoo long enough to cross every bag of fertilizer diameter or depth of the pile of products. Diameter pipe trench must visit at least 3 times greater than the diameter particle or product members. Sampling tube made of stainless alloys such as stainless steel, composite ...
4.2.2 sample vial
sample bottle used when sampling conducted in batches of fertilizers not bottled or liquid form in tanks, drums ... The bottle sampling with a capacity of 500 mL. Vase with iron pieces weighing 700 g to the drop-bottle sampling vertically Self sink of fertilizer containers. Sampling vial material usually made of glass, composite, stainless alloy ...
split samples 4.2.3 Tools
Shovels, mechanical instruments or split samples divided instruments automated random sample types.
4.2.4 glassware Model
4.2.4.1 for solid fertilizers: storing samples of packaging made of nylon, moisture-proof paper ...
4.2.4.2 for liquid fertilizers: storing samples in plastic bottles, glass bottles ...
đang được dịch, vui lòng đợi..
