BUCHI DuMaster D-480 - Manual (Page 128)

Operation Manual D-480 ©BÜCH Labortechnik AG
7 - Using the instrument 128
Packing fatty, humid and non-pelletizeable solid samples - packing with tin film and/or tin boats
Examples of solid samples of this matrix include sausage, cheese, meat, yeast (fat and humid), dry
yeast, soil, oily samples which release oil when pressed and small sample weights (calibration
standards). Proceed as follows:
 Tare the tin film or tin boat to zero.
 Fill in the sample.
 Close the tin film or tin boat over the sample either by hand or with the aid of tweezers.
 Use the hand press to shape the sample and press out any air.
 Weigh the sample and insert it on the carousel.
Packing dry and very fine solid samples - pelletizing in nitrogen-free paper
Examples of such samples include among others milk powder, whey powder, fertilizer and factor
samples (300 mg aspartic acid). Proceed as follows:
 Shape the paper into a cup shape.
 Tare the paper to zero.
 Fill in the sample.
 Twist the paper edges above the sample together.
 Place the packet into the pressing tool.
 Apply the press ram.
 Shape a pellet with the pelletizer (lever press).
 Weigh the pellet.
 Insert the pellet on the carousel.
Packing pelletizeable solid samples - pelletizing without packing material
Examples of such samples include grain and animal feed. Proceed as follows:
 Fill sample directly into the pressing tool.
 Apply the press ram.
 Shape a pellet with the pelletizer (lever press).
 Weigh the pellet.
 Insert the pellet on the carousel.
Packing liquid or pasty samples - packing with tin capsules
Examples of such samples include juice, ice cream, mush, molasses, curd and yogurt. Proceed as
follows:
 Tare the tin capsule to zero.
 Put the tin capsule into the capsule press.
 Fill in the sample using a pipette or syringe.
 Flush the capsule free of air with CO
2
.
 Close the capsule air-tight.
 Weigh the sample
 Insert the capsule on the carousel.