All equipment that comes in contact with a sample should be clean. To clean apparatus
Wash in a mild detergent solution
Rinse with deionised water
Clean heavily contaminated items by placing them in the ultrasonic bath containing deionised water
Allow to air dry
Samples should never be handled directly but using tweezers or spatula. Always use clean tweezers or spatula for each sample.
To avoid indirect contamination use disposable nitrile gloves when handling items that
will come into contact with samples.
Decanting material from one vessel to another should be done in the fume cupboard over a cleaned tray (in case of spillage).
Eye protection and gloves should be worn when samples are transferred.