Raman water sensitivity fail

Agielnt recommends using the water filled cuvette for signal-to-noise measurements of Raman band of water, part number:6610021800.

Also align the lamp; see the Help section on maintenance for isntructions.

Thanks for the feedback.

I have re-optimized the lamp alignment, but I didn’t get much (if any) improvement.

I also made some adjustments to the sample position, which I think helped a little.  I think some users have been fiddling with the sample position.

The Raman sensitivity test is now passing with 500 nm excitation (597:1, reference 500:1), but still failing with 350 nm excitation (528:1, reference 750:1).

The lamp is almost 1000 hours old.

Is there a recommended lifetime for the Cary Eclipse lamps?  They are not just the lamp.  They are the entire housing.

Ciao,

Chappy.

Thanks for the feedback.

I have re-optimized the lamp alignment, but I didn’t get much (if any) improvement.

I also made some adjustments to the sample position, which I think helped a little.  I think some users have been fiddling with the sample position.

The Raman sensitivity test is now passing with 500 nm excitation (597:1, reference 500:1), but still failing with 350 nm excitation (528:1, reference 750:1).

The lamp is almost 1000 hours old.

Is there a recommended lifetime for the Cary Eclipse lamps?  They are not just the lamp.  They are the entire housing.

Ciao,

Chappy.