Thermo Fisher Scientific TN100 Turbidimeter - Manual (Page 5)

Table of Contents
1. Overview .............................................................................................. 1
1.1 Unpacking TN-100/ T-100 Meter and Accessories ............................................... 1
1.2 Display................................................................................................................... 2
1.3 Keys and Functions ............................................................................................... 3
1.4 Battery Installation ................................................................................................. 4
2. Turbidity Calibration ........................................................................... 5
2.1 Calibration Standards ............................................................................................ 5
2.2 Indexing ................................................................................................................. 5
2.3 Calibration Procedure ........................................................................................... 6
2.4 Restoring Factory Calibration ............................................................................... 8
3. Turbidity Measurement ..................................................................... 10
3.1 General Information ............................................................................................ 10
3.2 Turbidity Measurement Procedure ...................................................................... 10
3.3 Single-Shot or Continuous Measurement ........................................................... 13
4. Troubleshooting Guide ..................................................................... 15
5. Routine Maintenance ........................................................................ 16
5.1 Vials – Handling, Cleaning and Care .................................................................. 16
6. Accessories ....................................................................................... 17
7. Specifications .................................................................................... 18
8. Addendum 1: Turbidity ..................................................................... 19
8.1 Definition ............................................................................................................. 19
8.2 Why Is It Important? ............................................................................................ 19
8.3 Measurement Principle ....................................................................................... 19
8.4 Nephelometric Turbidity Units (NTU) .................................................................. 20
8.5 Indexing a Vial ..................................................................................................... 20
9. Addendum 2: Guide to Good Measurement Technique ................ 21
9.1 Maintain sample vials in good condition ............................................................. 21
9.2 Match Sample Vials ............................................................................................ 21
9.3 Degassing ........................................................................................................... 21
9.4 Timeliness of Sample .......................................................................................... 22
9.5 Other Important Sampling Techniques ............................................................... 22
9.6 Calibration ........................................................................................................... 22
9.7 Dilution .............................................................................................................. 222
10. Warranty ...................................................................................... 233
11. Return of Items .............................................................................. 24