MultiVolume Insert Option

The MultiVolume Insert option provides analysis of samples using smaller-sized sample chambers.

  Wear latex gloves when handling inserts and sample cups. Oils from skin may contaminate the surface and affect analysis results. See Handling System Components.
Equipment Description
AccuPyc 1 cm3 Includes a 0.1 cm3 insert / sample cup combination.
AccuPyc 10 cm3 Includes 1 and 3.5 cm3 inserts with corresponding sample cups and appropriate calibration standards. Fritted filter lids are included for both inserts.
AccuPyc 100 cm3 Includes 10 and 35 cm3 inserts with corresponding sample cups and appropriate calibration standards. A fritted filter lid, which prevents the escape of sample particles under rapid gas flow, is included for the 10 cm3 insert.
AccuPyc 2000 cm3 Includes 650 and 1300 cm3 cups, supporting inserts and calibration standards. A tool is also included to allow removal of the supporting inserts.

An insert changes the size of the sample chamber and requires its own sample cup. All inserts are shipped with appropriate cups, with the exception of the 0.1 cm3 insert for the 1 cm3 unit. Because of its size, the sample cup for the 0.1 cm3 insert is built-in. The appearance of the inserts and cups varies.

 
  • The fritted filter caps for the 1 cm3 and 3.5 cm3 inserts fit on top of the insert.
  • The cap for the 10 cm3 insert (shown in image) fits on the sample cup.

This example shows a 10 cm3 cup and insert.

The inserts for the 2000 cm3 systems are installed and removed with a special tool.

Install and Remove Inserts and Sample Cups

0.1 cm3 Insert

The MultiVolume kit contains a special tool required to install the 0.1 cm3 inserts. The sample cup is built into the 0.1 cm3 insert.

1 cm3 Insert

The MultiVolume kit contains a special tool required to install the 1 cm3 inserts.

To Install the Insert

  1. Remove the sample chamber cap and place on a clean work surface with the greased side facing upward.
  Contamination from airborne particles can occur rapidly. The chamber cap should be left off the sample chamber for as little time as possible.
  1. Place the insert into the sample chamber.
  2. Use the handling tool to grasp the cup for placement in the insert. After placing the sample into the sample cup, insert the tip of the tool into the cup and press down firmly. The handling tool features an O-ring to grip the inside surface of the sample cup.

  1. Place the cup into the insert, then tilt the tool to one side and remove it from the sample cup.

  1. If using a fritted filter cap, place it onto the top of the insert.
  2. Replace the sample chamber cap.

To Remove the Insert

  1. Remove the sample chamber cap and place on a clean work surface with the greased side facing upward.
  2. Remove the fritted filter cap (if used).
  3. Insert the handling tool into the sample cup until the sample cup is gripped by the O-ring.
  4. Lift the sample cup out of the insert.
  5. Pull the insert from the sample chamber.
  6. Replace the sample chamber cap.

 

10, 3.5, and 35 cm3 Inserts

Remove the chamber cap and place the insert into the sample chamber. The insert should fit snugly in the chamber. Place the appropriate sample cup into the well of the insert.

  Do not force the insert or cup into the openings. This may damage the instrument, insert, or sample cup.

Install the fritted filter cap (if used) before closing the sample chamber. A fritted filter cap is used to constrict gas flow and is included with some inserts. The fritted filter cap for the 10 cm3 insert fits on the top of the sample cup. The fritted filter caps for the 1 and 3.5 cm3 inserts fit on the top of the insert. Fritted filter caps are not available for the 0.1 and 35 cm3 inserts.

Calibrate Insert

An insert must be calibrated and its operation verified. Appropriate calibration standards are included in the MultiVolume kits. For example, a 100 cm3 capacity AccuPyc with a 10 cm3 insert must be calibrated with the 10 cm3 insert, cup, and calibration standards.

0.1 cm3 Insert

Because of the size of the 0.1 cm3 insert, its calibration is performed in a different manner from that of other inserts.

  If the 1 cm3 pycnometer has not been calibrated recently, perform a calibration before calibrating the 0.1 cm3 insert.
  1. Remove the sample chamber cap and place on a clean work surface with the greased side facing upward.
  2. Place the insert into the sample chamber (the sample cup is built into the insert). Replace the chamber cap.
  3. Press Alt + 4 to access the Analyze function. Press ENTER until the Chamber Insert prompt is displayed. Ensure that None is displayed.
  1. Press ENTER to display the Analyze prompt. Press ENTER to begin the calibration.
  2. After the calibration is complete, the Reload prompt is displayed.
  3. Press CHOICE until the average measured volume is displayed. Record this value.
  4. Press Alt + 2 to access Setup.
  5. Press CHOICE until Calibration Data is displayed.
  1. Press ENTER to display the Chamber Insert prompt.
  2. Ensure that None is selected, then press ENTER to display the Cell Volume prompt.
  3. Subtract the average volume of the 0.1 cm3 insert / cup (recorded in Step 6) from the cell volume displayed in the prompt. Record this value.
  4. Press ENTER to display the Expansion Volume prompt.
  5. Record the value displayed for the expansion volume, then press ENTER to return to the Calibration Data prompt.
  6. Press ENTER. The Chamber Insert prompt is displayed.
  7. Press CHOICE until 0.1 cm3 is displayed, then press ENTER to display the Cell Volume prompt. Enter the value recorded in Step 11.
  8. Press ENTER to display the Expansion Volume prompt. Enter the value recorded in Step 12.
  9. Press SAVE to save the information and return to the Reload prompt.

The pycnometer is now ready for analyses using the 0.1 cm3 insert / cup.

1, 10, 3.5, 35, 650, and 1300 cm3 Inserts

  1. Remove the sample chamber cap and place on a clean work surface with the greased side facing upward.
  2. Place the insert and sample cup into the sample chamber. Replace the chamber cap.
  3. Calibrate the insert. See About Calibration.
  4. See Verify Operation.
 
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