Sampling tips
For optimal sampling with the Affirma Lubricant Analysis System, perform background measurements at predefined intervals, not exceeding 2 hours. Use the HATR Setup category for background and reference spectra. Apply samples using a pipette, ensure the ATR crystal is clean, and use sample workflows for analysis. Clean the crystal immediately after each analysis.
For optimal sampling with the Affirma Lubricant Analysis System, follow these guidelines:
- A background measurement is required at predefined intervals during continuous use. The workflows display a message when a background is needed. Use the Run Background workflow in the HATR Setup category to acquire a background spectrum. The background is measured through the ATR crystal (make sure it is clean). We recommend that the time between background collections does not exceed 2 hours.
- The Affirma Lubricant Analysis System can be used to measure aqueous and organic liquids as well as viscous materials such as gels, oils and greases.
- Use one of the sample workflows in the HATR In-Service Lubricant group to run a sample analysis.
Sample workflows based on a differential (or subtraction) require a new oil reference spectrum. Use the Collect Reference workflow in the HATR Setup category to acquire a spectrum from your reference material.
- To apply a sample for measurement, use a disposable pipette to add just enough sample to cover the ATR crystal completely and then start the measurement.
Figure 1-1: Application of sample using pipette
Do not touch the spectrometer until the measurement has completed.
- Always clean the crystal immediately after you finish the analysis. See Clean the ATR crystal for instructions.