Indexing A Set Of Sample Vials - VWR TIR 200 Mode D'emploi

Indexing a set of sample vials

1. Fill several clean and dry vials up to the mark with dilution water.
2. Cap the vials.
3. Hold the vial by the cap and clean it with the supplied cleaning tissue to remove water
spots and finger prints.
4. Switch the turbidimeter on.
5. Place the first vial in the sample chamber making sure that the marks are aligned.
6. Place the cover on the instrument.
7. Press [Read] key.
8. Note the displayed result.
9. Rotate the vial in the sample chamber about 45°.
10. Place the cover on the instrument.
11. Press [Read] key.
12. Note the displayed result.
Repeat this procedure until the smallest NTU value is obtained.
13. Mark the vial.
14. To index more vials, repeat point 1. to 13. for each vial.
15. Repeat this procedure until the reading matches the first vial reading within
± 0.01 NTU.
16. Mark the vial.
17. Repeat this procedure to match other vials.
Note:
It may not be possible to match all vials due to variation in the glass.
VWR ver 1 01/2018
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