write down the apparatus that are needed to conduct the activity
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Answer:
Quality analytical work can only be performed if all materials used are suitable for the job, properly organized and well cared for. This means that the tools are adequate and in good condition, and that sample material receives attention with respect to proper handling, storing and disposal.
The tools used for analysis may be subdivided into four categories:
1 Primary measuring equipment (pipettes, diluters, burettes, balances, thermometers, flow meters, etc.)
2. Analytical apparatus or instruments.
3. Miscellaneous equipment and materials (ovens, furnaces, fridges, stills, glassware, etc.)
4. Reagents.
The saying that a chain is as strong as its weakest link applies particularly to these items. An analyst may have gone out of his/her way (as he/she should) to prepare extracts, if the cuvette of the spectrophotometer is dirty, or if the wavelength dial does not indicate the correct wavelength, the measurements are in jeopardy. Both the blank and the control sample (and a possible "blind" sample or spike) most likely will reveal that something is wrong, but the harm is already done: the problem has to be found and resolved, and the batch might have to be repeated. This is a costly affair and has to be minimized (it is an illusion to think that it can be totally prevented) by proper handling and maintenance of the equipment.