Tecniche di laboratorio

Source: Smaa Koraym at Johns Hopkins University, MD, USA

1. Preparation of LaboratoryExpand

   Here we show the laboratory preparation for 10 students working individually, with some excess. Please adjust quantities as needed. 

   • To set up for this lab experiment, wear the appropriate personal protective equipment, including a lab coat, chemical splash goggles, and gloves.
   • Obtain enough small plastic bottles with caps for the number of students and label them ‘NaCl’.
   • Use a top-loading balance to weigh 50 g of NaCl directly into each bottle. Place the bottles of NaCl at the student workstations.
   • Fill enough 250-mL wash bottles with deionized water for each student to have one.
   • Set out the following glassware and equipment at each student lab station:

     1    Stirring rod

     1    20-mL volumetric flask

     1    10-mL volumetric pipette

     1    Pipetter

     1    600-mL beaker

     1    50-mL graduated cylinder

     1    12-in ruler

     1    Egg

     1    Eyedropper