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LAB TECHNIQUES, In the initial stages of the process...
Firstly/…
LAB TECHNIQUES
separation
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They're twins. Hard to tell apart at first sight, aren't they?
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to differentiate sth from sth = to distinguish (sth from sth) - odróźniać, rozpoznawać
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They take the sediment itself, they extract the oil from it
FILTRATION
funnel and semi-permeable barrier: filter paper/ Fritted funnels, Filtering flasks = vacuum flasks
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types: gravity filtration, vacuum filtration
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CHROMATOGRAPHY
TLC plate, TLC chamber, monitoring reaction, UV lamp to visualize
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Chromatography is a method using mixed substances that depends on the speed at which they move through special media, or chemical substances. It consists of a stationary phase (a solid) and a mobile phase (a liquid or a gas)
PRECIPITATION
product forms microcrystals/ amorphous solids, because the solubility was reduced too fast and crystals couldn't grow idiomorphic
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Precipitation is another word for crystallization but is most often used when crystallization occurs very quickly through a chemical reaction.
CRYSTALLISATION
Product forms as nice crystals, generally because you reduce the solubility slowly.
The formation of a crystalline solid from a solution generally by the lowering of the temperature or by evaporation of a solvent.
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EXTRACTION
separatory funnel, the solvents have to be immiscible, density
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Extraction is a technique used for separating a compound from a mixture. An example is separating a water-insoluble organic compound from an aqueous mixture by extracting it into a water-insoluble organic solvent.
- In the initial stages of the process...
- Firstly/ Secondly...
- Then/ Next/ Subsequently - kolejno ...
- Having done sth, the next step is doing...
- Once you do the task, you can go to the next one.
- so that/ in order to ➜ identify or determine/indicate that/if ...
- After that/ ..., after which ...
- Finally/ Eventually/ The last stage involves...
- You shouldn't forget to clean it afterwards!
- This Financial Regulation shall be applicable to the management of these resources
- Standard precautions are applied to all patients, regardless the diagnoses.
- A polyether-based solvent is used to selectively absorb the SO2 from the exhaust gases.
- This two-compartment wine boxes, may be used for packaging.
- The relevance of these findings to the clinical use of ORENCIA is unknown.
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Solubility
Solubility is a measure of the amount of solute that can be dissolved in a given solvent at a given temperature
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compound, reaction mixture, mixture,
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The flow of the mixture must be maintained at a certain rate because otherwise (w przeciwnym razie) the division won't be effective.
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