Advance sample planning and sequencing serves to greatly enhance laboratory productivity. Sample management – key to success of laboratory operations provided useful tips on sample receipt, storage, tracking and final disposal. The present article will cover benefits of analysis sequencing. However, before starting the analysis you should be aware of the nature of sample and analysis requirements. This information helps decide handling of samples, storage conditions, technique to be adopted, environmental controls, etc.
- List out the received samples to ensure that no sample gets left out
- Prioritize the analysis on the basis of urgency or on the basis of – first received – first to be analyzed.
- Samples requiring similar pre-analysis treatment, sample handling and analytical technique should be grouped together
- Ensure availability of all glassware, chemicals and reagents, working standards and calibrated instruments before starting analysis to save on time and frustrations later
The advantages of advance sample sequence planning when using commonly used analytical techniques are outlined below:
- Columns need not be changed sample after sample
- Save time required for setting the chromatographic operational conditions such as mobile phase composition, column temperature, injection volume and choice of injector and selection of detector
- Time saving on baseline stabilization between analysis of different samples
- Use of autosampler for sequencing analysis after setup of required operation conditions
Atomic Absorption Spectroscopy
- Sample pretreatment and digestion practices are common for similar samples
- Time-saving between change of hollow cathode lamps or use of multi element lamps whenever possible
- Time-saving between switching of gases for analysis of different elements requiring different atomization temperatures
- Time-saving in preparation of serial dilutions of standard stock solutions
- Common sample pre- treatment for identical samples
- Time-saving in instrumental parameter settings such as wavelength, scan rate, slit width, etc
- Use of similar types of absorption cells requiring minimal rinsing between analysis
It is understood that quite often urgent analysis requirements come up unexpectedly but if you are in the habit of making advance planning it is always possible to make adjustments to accommodate the additional sample workloads and still give your best output.