Gravimetric mass

 

erin.jpgOur laboratory is equipped with two Mettler Toledo XP-6 microbalances and one Mettler Toledo XP2U ultrabalance. We weigh thousands of filters every month, both before sampling for tare weighing and after sampling to determine the mass of sampled material. The maximum weight capacity of the XP-6 is 6 g, although most of our filters weigh around 50 mg. The quoted readability of XP-6 balance is 0.001 mg.