Description
Thermo Scientific Niton Apollo Handheld LIBS Analyzer Repair
The Niton Apollo is a LIBS analyzer, not an XRF analyzer, and that difference decides everything about how it fails. Laser Induced Breakdown Spectroscopy focuses a laser onto the sample to ablate a spot and form a plasma; light from that plasma travels through fiber optics into a spectrometer, under a high-purity argon purge. That is what lets the Apollo quantify carbon in low alloy and carbon steels — something XRF cannot do at all — along with carbon equivalency and thirteen other elements, in around ten seconds, from a 6.4 lb handheld running on Milwaukee M18 battery packs. So its faults are laser, optical and gas-path faults, and they need different diagnosis from the rest of the Niton range.
June Company’s certified technicians repair the Niton Apollo for PMI inspectors, weld shops, pipeline and pressure-vessel teams, and steel fabricators. We diagnose and repair at the board and component level, and every instrument is functionally tested against a known reference sample before it ships back.
Common Niton Apollo problems we fix
- Laser output degradation — weak or inconsistent ablation, showing up as unstable carbon readings.
- Argon purge faults — leaks, regulator failures or restricted flow — carbon results depend entirely on the purge being right.
- Optical path and fiber contamination — plasma light not reaching the spectrometer cleanly.
- Spectrometer faults — peak positions shifting and element identification becoming unreliable.
- Ablation window and spark-position faults — the laser no longer focusing at the correct standoff.
- Milwaukee M18 battery interface faults — the hot-swap system not carrying between packs.
- Laser safety interlock failures — the analyzer refusing to fire — working as designed, and repairable.
- T — o.
FAQs
My carbon numbers are unstable but the other elements look fine — what is that? That pattern usually points at the argon purge or the laser rather than the spectrometer. Carbon is the element most sensitive to purge quality, which makes it the first symptom.
Do you actually service LIBS instruments, or only XRF? LIBS specifically. The Apollo is a laser and gas-path instrument, and we diagnose it as one rather than treating it like an XRF analyzer.
Every repair is backed by a 90-day parts-and-labor warranty, with a firm quote before any work begins. Email us or submit a service request.








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