Sample container and sampler

Samples are stored in a transportable container (bottle, carboy, canister). Sample containers are made of glass or plastics (particularly polyethylene). 

Samplers are instruments and devices enabling single or repeated samples to be taken either from a position which is not readily accessible (deep samplers) or without the attending personnel (automated samplers). Samplers and their components are made from corrosion-proof steels, usually chrome-nickel with addition of non-magnetic tungsten and molybdenum. 

Depending on the principle of their operation the deep samplers are divided into three groups (1)  

Automated samplers function without the need for an operator, giving the possibility of selection of a sampling regime arranged in dependence on time or flow-through quantity. One of these is the sampler shown in Fig. 3.66 [7]. The system has a simple battery-driven peristaltic pump, which can take samples heavily polluted with suspensions of solid material using a suction basket immersed in water. The pump feeds the sample into a 5 1 bottle at the required times determined by the timing unit. 

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