This is a great video for demonstrating poor laboratory technique. Cross contamination of primary standards, , contamination of the internal standard with the table and hands, measuring volume by eye instead of volumetric glassware. Don't follow this example.
wheres the end?
th-cam.com/video/1eNR-HZDA1A/w-d-xo.html
Probably a bad idea to use spit on a calibration sample....why not just use distilled water?
This is a great video for demonstrating poor laboratory technique. Cross contamination of primary standards, , contamination of the internal standard with the table and hands, measuring volume by eye instead of volumetric glassware. Don't follow this example.