Clean and Label Sample Tubes
The equipment images in this topic may differ slightly from your equipment; however, the instructions are the same unless otherwise noted. |
Sample tubes and filler rods must be clean and dry before samples are added and weighed. The following table indicates which materials are needed for cleaning. The procedures following the materials list are recommended.
Supplied by Micromeritics | Supplied by User |
---|---|
|
|
- Preheat drying oven to 110 ºC.
- Verify that the ultrasonic cleaning unit is clean.
- Use 5 grams of Alconox (or other suitable detergent) per 500 mL of warm water and fill the ultrasonic unit with enough water to cover the sample tubes and filler rods (if used). If too much detergent is used, it may be difficult to rinse from the sample tubes. Ensure the detergent is dissolved before placing the sample tubes and filler rods into the water.
- Fill the sample tubes with warm water and place them in the ultrasonic cleaning unit, then place the filler rods in the unit. Turn on the ultrasonic cleaning unit for approximately 15 minutes.
- Use rubber gloves to ensure no oils or residue are transferred to the clean tubes and filler rods, then remove the sample tubes and filler rods from the unit.
- Clean the interior of the sample tubes with the brush supplied with the analyzer.
- Rinse the sample tubes and filler rods thoroughly with hot water. Rinse again with isopropyl alcohol or acetone. If isopropyl alcohol or acetone is not available, deionized water may be used.
- Stand the sample tubes on the sample tube rack and place the filler rods in a basket or in the rack. Bake in a vacuum oven for two hours at 110 °C.
Samples tubes can also be cleaned with high purity acetone or isopropyl alcohol and dried for about 10 minutes under heat. If using this method, continue with step 10. |
- Remove the sample tubes and filler rods from the oven and allow to cool.
Do not insert the filler rods at this time. Filler rods are inserted before the sample tube is installed on the analysis port. |
- Blow out the sample tubes with oil-free compressed air.
- Rinse the sample tube closure with isopropyl alcohol, then wipe the sample tube closure dry with a clean, lint-free cloth.
- Label the sample tube and stopper for identification.
- Replace the rubber stopper.
Micromeritics Learning Center Contact Us
Copyright © 2009 - 2021. Micromeritics Instrument Corporation. All rights reserved.
![]() | ![]() | ![]() | ![]() | ![]() |