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A combination of high temperature and salt deposit causes a quartz torch to devitrify. Higher concentrations of salt in the samples lead to more rapid devitrification. The quartz torch in the photo was run for only 6 hours with samples containing 10% NaCl and is already badly degraded.
By contrast, the ceramic material does not devitrify and is not affected by salt deposits. The ceramic D-Torch in the photo was run for the same period and with the same samples as the quartz torch but shows no degradation at all.
The benefits of the D-Torch include:
Manufacturer Model Agilent (HP) 7500 Agilent (HP) 7700/7800/7900/8800 Agilent (Varian) 5100/5110 Agilent (Varian) 700-ES Series Axial, Vista Axial Agilent (Varian) 700-ES Series Radial, Vista Radial, Liberty 100/120/150/200/220 Jobin Yvon (Horiba) 24, 38 & 138 Series, Ultima, Activa Perkin Elmer Elan 500, 5000, 6000, 9000 Perkin Elmer Elan 6100DRC, DRCII, DRC-e Perkin Elmer NexION 300 Perkin Elmer Optima 2000/4000/5000/7000 DV Series Perkin Elmer Optima 8000/8300 DV Series Perkin Elmer Optima 4300V, 5300V, 7300V Perkin Elmer Optima 3000RL, 3100RL,3200RL Spectro (Ametek) EOP (Modula, CIROS, Genesis, ARCOS) Spectro (Ametek) SOP (Modula, CIROS, Genesis, ARCOS) Thermo (TJA) iCAP 6000/7000 Duo Thermo (TJA) iCAP 6000/7000 Radial
* The D-Torch is covered by US Patents 7,847,210 B2 and 8,232,500 B2
The quartz outer on the D-Torch lasts much longer than the OEM model, but a ceramic is still definitely worth it. The ceramic has been great for the iCAP¡¯s that we purchased from you and will probably get another for our other iCAP too. (In reference to the D-Torch with ceramic outer tube)
Contract laboratory - New Zealand
The D-torch is working great! I¡¯m very pleased with it and will let the other ICP users know about it.
Chemical manufacturer - USA
We have worked with your ceramic D-Torch since three weeks and the results and the sensitivity are so far very well and I would therefore recommend that torch to other users of ICP-OES.
Materials research laboratory - Germany
Our fully ceramic D-torch is in place since august 2013 and it seems to be in good shape, no major sign of deterioration.
Mining laboratory - Canada
(In reference to the D-Torch with ceramic outer tube) It works like a champ, and the base line on my Si has never been as clean as this.
Contract laboratory, petroleum industry - USA
We have been using the D-Torch on our Perkin Elmer ICP for about a year, and have had great success with it. We definitely see lower costs, and better Si stability.
Automotive industry supplier - USA
The D torch is good value.
Oils laboratory - New Zealand
(In reference to the D-Torch) The torch has been excellent. We have been using it for 2 months so far and very little to no carbon buildup. Have only had to dismantle once during this time.
Oils laboratory - Australia
We have also been running with a full ceramic torch on all of our instruments for over a year now and have found them to be very reliable.
Oils laboratory - UK
(The D-Torch) performs really well and we have had no problems with it. It performs just as well if not better than the single piece torches and obviously saves a lot of money in replacement parts.
Environmental laboratory - Australia
The torch has been running like a Swiss watch ... The ceramic torch has shown no signs of deterioration, with 80 hrs/week running. The intensities on the 7300DV have also been elevated between 10-20%.
Contract laboratory - Australia
The Ceramic torch is quite excellent, mostly from a maintenance standpoint, it forms much less deposits on it and that which forms is usually very easy to clean ... I do think we'll continue buying ceramic torches mostly because they last much longer and are so much easier to keep clean.
Environmental laboratory - Sweden
I am quite pleased with the D-Torch. It's stable and rather easy to maintain and clean. ...Another upside is the D-torch is also much easier to push in and take out of the torch block, quartz torch tends to get stuck in the o-rings and require quite a lot of force to pull out, but the D-torch is much smoother. It's also quite excellent for analyzing silica in a hydrofluoric digestion, I noticed my blanks for that were much lower and stable.
Contract laboratory - Sweden
The D-Torch is performing very well. The ceramic outer has been in almost constant service 22 hours a day, 6 days a week since we purchased it and we have had no issues...We are due to purchase a replacement ICP and will certainly be purchasing another D-Torch to go along with it.
Lubricating oils laboratory - Australia
The D-Torch we have for the Elan 9000 ICP-MS works very well.
Government food and agriculture laboratory - New Zealand