Micromeritics GEMINI VII KEYPAD, Руководство оператора

Страница: 36 / 159

2 Operational Procedures
C
LEAN AND
L
ABEL
S
AMPLE
T
UBES
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.
1. Preheat drying oven to 110 ºC.
2. Verify that the ultrasonic cleaning unit is clean.
3. 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 deter-
gent is dissolved before placing the sample tubes and filler rods into the water.
4. 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.
5. 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.
6. Clean the interior of the sample tubes with the brush supplied with the analyzer.
7. 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.
2 - 6
Gemini VII Keypad Operator Manual
239-42801-01 (Rev E) — July 2021