| Instrument Code: | L05-01 |
| Name: | Piston-tube sampler |
| Synonyms: | Visco Sampler |
| Description: | |
| Syringe-like sampler consisting of a body and a piston. Made from PTFE or polypropylene (PP) with a stainless steel connecting rod. Usual dimensions: capacity 150 ml to 650 ml, length 20 cm to 200 cm. | |
| Picture: | |
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| Application: | |
| Sampling of viscous media: sludge, suspended materials, aggressive liquids and foodstuffs. | |
| Operation: | |
| The piston-tube sampler has three different uses: (i) it can be used like a large syringe to suck in liquids of medium viscosity; (ii) it can be transformed by a slight adjustment into a pipette which is especially suitable for drawing of aggressive liquids or foodstuffs; or (iii) thick or semi-solid materials may be sampled when the end is removed and the sampler is inserted into the material. After withdrawal the contents of the sampler are pushed out into a wide mouth container using the piston. | |
| Typical examples: | |
| Liquids and pastes, incl. aggressive chemicals/foodstuffs (oils, emulsions, creams, etc.). | |
| Cleaning and maintenance: | |
| Disassemble, remove residues of sampled material, wash with water or organic solvents (e.g. ethanol, acetone), dry at room temperature. Sterilisable. | |