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my name's gareth pierson from adulant technologies this is the first in a series of educational videos designed to get you the best performance out of your adulan icpms today we're working with the 7900 single quadripole icpms however， the principles we outline here will apply to other agile and icpms models let's look at some common tasks that will help you achieve optimal performance analysts report four main topics of concern with icp ms namely sensitivity precision， accuracy and background these topics that can turn are covered in three key areas， standard and sample preparation， sample introduction and instrument maintenance first let's look at standard and sample preparation preparation of your calibration standards and using a calibration blank is critical to achieving good accuracy and low background use only ultra pure dinized water， high purity acids and adulant icp ms certified reference materials for standard preparation check all standards are within they use by date check the certificate of analysis for all reagents for potential contamination， prepare parts， per billion and lower concentration standards fresh everyday using serial dilutions once prepared check the calibration blank readings for high counts which could indicate a source of contamination sample preparation can also affect accuracy and precision ensure that digestion is complete with no particles in solution verify that there's no loss of volatile analytes or contamination during sample preparation for optimal accuracy always try to matrix match your calibration standards to your samples finally carry over or memory effects can be minimized by ensuring adequate rinse times with an appropriate rinse solution next will examine the role of the sample introduction components most instrument and analytical failures result from problems with the sample introduction system so， that's where you should start your problem diagnosis or preventative maintenance the sensitivity precision and accuracy of your analysis can be affected by any component in the sample introduction system， including using worn or damaged pump tubing nebulise a blockage or damage at the tip using a dirty spray chamber to failure to optimize the torch position using blocked or damage sampler and skimmer cones or incomplete conditioning of cones prior to analysis finally let's look up maintenance you can use early maintenance feedback to track component， usage and identify those need in routine maintenance or replacement this is known as emf and is a convenient way to help you prevent problems occurring in the first place emf enables you to log your maintenance tasks and predict when maintenance maintenance is required instructions are provided in the software help menu your user manual and the maintenance video disc to guide you through all the routine maintenance tasks preventative maintenance can save time and money now let me share some general recommendations when using your icp ms prior to analysis check the parastartic pump tubing adjust the clamp check the connections of the sample introduction system and the sampler cone pay in particular attention to the orifice check the drain the foreline pump and the water recirculator regularly before analysis perform startup procedures which include check the instrument and the emf status perform instrument tuning calibrate and check the blank reading these will ensure instrument performance never assume your system is still optimized always rinse between samples and for several minutes at the end of a sample run your rinse solution should match your sample matrix use a matrix blank fresh calibration standards and appropriate internal standards use emf to schedule your regular maintenance don't wait until you have a problem finally follow your analytical recommendations in your user manuals and regularly perform maintenance as in the maintenance video guide。