Sample Preparation; Cleaning Sample Tubes - Micromeritics FlowPrep 060 Operator's Manual

Sample Preparation

Sample Preparation

Cleaning Sample Tubes

Sample tubes must be clean in order to obtain accurate analysis results. Clean the tubes in an
ultrasonic cleaning unit as follows. The materials required for cleaning and weighing samples
are:
• Ultrasonic cleaning unit
• Alconox or other suitable detergent
• Rubber gloves or lint-free cloth
• Isopropyl alcohol (IPA) (or deionized water if IPA is unavailable)
• Nitrogen or helium
• Fume hood
• Balance for weighing sample
• Weighing support
• Sample tube brush
• Sample tube
• Sample tube stopper
• Funnel
1. Check the bowl of the ultrasonic unit to make sure it is clean.
2. Using a ratio of 5 grams of Alconox (or equivalent detergent) per 500 mL of warm water,
fill the bowl of the ultrasonic unit with enough water to cover the entire sample tube.
3. Ensure that the detergent is dissolved before placing the sample tube into the water. If too
much detergent is used, it may be difficult to rinse from the tube.
4. Fill the sample tube with warm water and place it in the bowl of the ultrasonic cleaning
unit. Turn on the unit and clean the sample tube for approximately 15 minutes.
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FlowPrep 060
Nov 2010