I found major deposits within my autosampler probe after doing an analysis with MP-AES which the rinse solution (high purity water) wasn't able to remove.
How do I remove these deposits within both the probe and the autosampler tubing?
Thanks!
I found major deposits within my autosampler probe after doing an analysis with MP-AES which the rinse solution (high purity water) wasn't able to remove.
How do I remove these deposits within both the probe and the autosampler tubing?
Thanks!
Hi Shane,
We have a recommended regeneration procedure for the probe, usually used for ICP-MS to get rid of sticky elements that contribute to the background. Note this is an aggressive strip and clean…
Hi everyone,
Thank you Peter Riles and Gareth Pearson for the brilliant feedback. Prior to your replies managed to clean the probe effectively by using a very dilute detergent (Hellmanex III) in an ultrasonic…
Hi Shane,
What type of samples are you analysing and what is the matrix?
I typically prefer to rinse with the same matrix as the samples being analysed. This helps to keep the tubing clean. Once a probe…
Hi Shane,
What type of samples are you analysing and what is the matrix?
I typically prefer to rinse with the same matrix as the samples being analysed. This helps to keep the tubing clean. Once a probe is visibly dirty it can be difficult to clean. I would suggest replacing the probe and using a more aggressive rinse. The minimum i suggest is 2% HNO3, although if you are measuring something basic, a different rinse may be more appropriate.
If you want to try to clean the probe running some acid through it may be able to clean it. 10% HNO3 may do what you need. You could use a syringe to connect to the probe to rinse it, or use the autosampler pump.
Regards,
Peter
Hi Shane,
What type of samples are you analysing and what is the matrix?
I typically prefer to rinse with the same matrix as the samples being analysed. This helps to keep the tubing clean. Once a probe is visibly dirty it can be difficult to clean. I would suggest replacing the probe and using a more aggressive rinse. The minimum i suggest is 2% HNO3, although if you are measuring something basic, a different rinse may be more appropriate.
If you want to try to clean the probe running some acid through it may be able to clean it. 10% HNO3 may do what you need. You could use a syringe to connect to the probe to rinse it, or use the autosampler pump.
Regards,
Peter