portable-libs-spectrometer-lis-02
                     Portable LIBS Spectrometer LIS-02 — Technical Reference
TECHNICAL REFERENCE  ·  INDUSTRIAL SPECTROSCOPY
Portable LIBS Spectrometer LIS-02
A Complete Technical Guide
Updated May 2026  ·  Audience: Engineers · QC Managers · Procurement
1. Introduction
What this guide covers:
This article provides a structured technical overview of the Portable LIBS Spectrometer LIS-
02 — its underlying technology, verified specifications, industrial use cases, and an honest 
comparison with competing methods. It is written for quality engineers, procurement teams, 
and technical managers who need reliable information before evaluating or deploying this 
instrument.
Metal identification in the field has changed significantly over the past decade. Traditional lab-based
optical emission spectrometers (OES) deliver high accuracy, but they require argon purging, 
sample preparation, and a stationary setup. X-ray fluorescence (XRF) analyzers solved the 
portability problem for many alloys, but they cannot detect carbon — a critical element in steel 
classification.
The Portable LIBS Spectrometer LIS-02 addresses exactly this gap. It uses laser-induced 
breakdown spectroscopy (LIBS) technology to deliver sub-second elemental analysis — including 
carbon — directly in open air, without argon, and in a form factor comparable to a cordless power 
tool.
This guide draws on published manufacturer specifications, independent technology comparisons, 
and verified user feedback to give a factual picture of where the LIS-02 fits and where it does not.
2. How LIBS Technology Works
Laser-Induced Breakdown Spectroscopy is a form of atomic emission spectroscopy. The operating 
principle involves four steps that happen in under one second:
1. Laser ablation: A high-energy nanosecond laser pulse (1064 nm, Nd:YAG) fires at the 
sample surface. The energy density is sufficient to vaporize a tiny amount of material — 
typically a few micrograms.
2. Plasma formation: The vaporized material forms a hot plasma (10,000–20,000 K) that 
contains excited atoms, ions, and electrons from every element present in the ablated spot.
3. Emission: As the plasma cools over microseconds, the excited species decay to lower 
energy states. Each element emits light at characteristic wavelengths — its spectral 
fingerprint.
Technical Reference · May 2026 Page 1 of 10
Portable LIBS Spectrometer LIS-02 — Technical Reference
4. Detection and analysis: An onboard spectrometer collects the emitted light across the 
177–380 nm range, maps emission lines to known elemental references, and calculates 
concentrations using embedded calibration models.
Why LIBS detects carbon when XRF cannot:
Carbon's characteristic fluorescent X-ray energy (0.277 keV) is so low that it is almost 
completely absorbed by air before reaching an XRF detector. LIBS avoids this problem 
entirely — it reads optical emission lines, not X-ray fluorescence, so carbon measurement is 
direct and does not require an inert gas purge.
The measurement point in the LIS-02 is approximately 50 microns in diameter. This small spot size 
allows the instrument to analyze individual phases, thin coatings, or segregated zones that a larger 
beam would average out.
3. LIS-02: Product Overview
The LIS-02 is a handheld portable LIBS spectrometer developed by NPP Strukturnaya Diagnostika 
(Russia), distributed internationally through partners including NPPSD (India). The device targets 
incoming material inspection, scrap sorting, and on-site quality control in steel, foundry, and non-
ferrous metal processing.
The primary design goal is speed combined with carbon-capable analysis. Most competing portable
instruments require either argon gas flow (for carbon measurement) or sacrifice carbon detection 
entirely (XRF). The LIS-02 measures carbon in ferrous materials at atmospheric air conditions, 
which removes consumable costs and logistical constraints.
1 second 0.01 nm 200+ Built-in
Full analysis time Spectral resolution Tests per battery charge Grade library on screen
4. Full Technical Specifications
The following table lists confirmed specifications for the LIS-02 as documented by the manufacturer
and distributor network.
Parameter Specification
Technology Laser-Induced Breakdown Spectroscopy (LIBS)
Laser source Pulsed DPSS Nd:YAG — 1064 nm
Laser safety class Class 3B
Working spectral range 177 – 380 nm
Spectral resolution 0.01 nm (across full range)
Technical Reference · May 2026 Page 2 of 10
Portable LIBS Spectrometer LIS-02 — Technical Reference
Parameter Specification
Measurement point size 50 μm (microns)
Measurement duration 1.0 second
Display 5-inch color touchscreen
Data transfer WiFi and Bluetooth
Interface languages English, German, Russian
Security Password protection
Battery type Replaceable Li-ion battery
Battery capacity More than 200 measurements per charge
Device operating temp. −26 °C to +40 °C
Ambient air temperature −15 °C to +55 °C
Camera High-resolution integrated camera (records analysis location)
Argon requirement None — operates in open air
Carbon equivalent (CE) Calculated and displayed automatically
Grade library Built-in; grade displayed automatically after analysis
Delivery set Instrument, thermoprinter, batteries, transport case, protective 
cover, reference sample
The −26 °C lower operating limit is notable for outdoor steel yards in cold climates. The replaceable 
(not rechargeable-only) battery design avoids downtime when a battery depletes mid-shift.
5. Key Features in Detail
Elemental Coverage
The LIS-02 measures the following elements across ferrous and non-ferrous base matrices: C, Si, 
Mn, Cr, Ni, Fe, Mg, Al, V, Cu, Zn, Sn, Mo, Ti, W, Nb, Pd, Ag, Cd, Pt, Au, and others. The list covers 
the main alloying and tramp elements needed for steel grading, aluminum alloy sorting, and non-
ferrous scrap classification.
Base materials supported include iron-base, aluminum-base, titanium-base, nickel-base, zinc-base,
and copper-base alloys. This range makes the LIS-02 relevant across recycling, manufacturing, and
PMI (positive material identification) inspections.
Grade Library and Automatic Identification
After each measurement, the instrument matches the elemental profile against its built-in grade 
library and displays the identified steel or alloy grade directly on the touchscreen. Users do not 
need to manually interpret elemental percentages. This matters in scrap sorting operations where 
operators handle large volumes with limited metallurgical training.
Technical Reference · May 2026 Page 3 of 10
Portable LIBS Spectrometer LIS-02 — Technical Reference
Carbon Equivalent (CE) Calculation
The LIS-02 calculates and displays carbon equivalent values automatically. CE is a standard 
parameter in weld procedure qualification and structural steel purchasing. It combines carbon, 
manganese, chromium, vanadium, molybdenum, nickel, and copper concentrations into a single 
number that predicts weldability risk. Having CE calculated on-site, in seconds, is a practical 
advantage for fabrication and construction procurement.
Integrated Camera
The built-in high-resolution camera records the physical location of each analysis point. This 
creates a traceable record linking the measurement result to an exact position on the component. 
For PMI documentation in petrochemical or aerospace components, this feature supports audit 
requirements without needing a separate photo record.
Wireless Data Transfer
WiFi and Bluetooth connectivity allow results to sync to a laptop, tablet, or ERP system without a 
cable. This is useful in both laboratory and field settings where USB connections are inconvenient.
6. Carbon Detection Without Argon
This capability is the LIS-02's most commercially significant differentiator. Carbon concentration in 
steel determines its grade classification and mechanical behavior. However, most portable 
analyzers cannot measure it:
• Handheld XRF: Cannot detect carbon at all. Carbon's fluorescent X-ray is too weak to 
survive the air path to the detector.
• Portable OES: Can measure carbon, but requires an argon gas purge before each spark. 
This adds consumable cost, requires gas cylinders in the field, and adds 10–30 seconds per
test for purge time.
• LIS-02: Reads carbon emission lines in the UV range (below 200 nm). At the plasma 
temperatures generated by the laser, the carbon signal is strong enough to measure directly
in air without purging.
"Carbon analysis: The spectrometer LIS-02 allows measuring carbon concentration in steels
without using argon, directly in the air."
— NPPSD technical documentation, LIS-02 product page (2026)
In practical terms, this means a scrap yard or steel service center can verify carbon content on 
every incoming batch without maintaining an argon supply. For foundries classifying cast iron, 
carbon content differentiates grades; for fabricators, it determines whether a heat requires pre-heat 
before welding. Both cases benefit from fast, no-purge measurement at the point of receipt.
7. Industrial Applications
The LIS-02 is positioned for several distinct industrial scenarios. Each involves different priorities 
and constraints.
Technical Reference · May 2026 Page 4 of 10
Portable LIBS Spectrometer LIS-02 — Technical Reference
Incoming Material Inspection (Steel Service Centers and Mills)
Steel service centers receive coil, plate, bar, and structural sections from multiple suppliers. 
Verification of declared grade before the material enters stock reduces the risk of grade mix-ups in 
subsequent processing or delivery. The LIS-02 allows rapid sampling at the unloading bay — no 
sample preparation, no laboratory queue.
Scrap Metal Sorting (Recycling Facilities)
Scrap yards handle mixed loads of ferrous and non-ferrous material with widely varying alloy 
composition and value. Sorting accuracy directly affects revenue. The LIS-02's 1-second cycle time 
and broad elemental coverage — including carbon for steel grading and Mg/Si for aluminum alloy 
distinction — support high-throughput sorting. Over 800 installations reported by NPPSD suggest 
meaningful adoption in this sector.
Positive Material Identification (PMI)
Petrochemical plants, refineries, and power stations mandate PMI programs to verify that installed 
components match design specifications. Traditional PMI tools are XRF (which misses light 
elements) or portable OES (which requires argon). The LIS-02 adds light-element and carbon 
capability to a field-portable PMI workflow.
Foundry Grade Control
Cast iron and carbon steel pours require verification that melt chemistry matches the target grade 
before casting. Floor-level verification with a portable LIBS spectrometer can reduce laboratory 
turnaround from hours to seconds, directly relevant to furnace tap-to-pour scheduling.
Field Inspection and Maintenance
For maintenance teams verifying repair materials on pipelines, pressure vessels, or structural steel, 
the LIS-02 provides on-site confirmation without sending samples to an external laboratory. 
Temperature range (−15 °C to +55 °C ambient) covers most outdoor inspection environments.
Technical Reference · May 2026 Page 5 of 10
Portable LIBS Spectrometer LIS-02 — Technical Reference
8. LIBS vs XRF vs OES: Technology Comparison
The three principal portable elemental analysis methods for metals each have strengths, limitations,
and target use cases. The table below compares them across criteria most relevant to industrial 
decision-making.
Criterion LIBS (LIS-02) Handheld XRF Portable OES
Carbon detection Yes — in open air No Yes — needs argon
Light elements (Mg,Si) Yes Partial Yes
Analysis time per test 1 second 3–10 seconds 15–60 seconds
Argon gas required No No Yes
Sample preparation None None Surface grind required
Surface damage Micro-ablation (50 μm) None (non-destructive) Visible spark mark
Heavy metal accuracy Good Excellent Excellent
Low-carbon precision Good (improving) Not applicable Very high
Radiation hazard None X-ray (license req.) None
Field portability High High Moderate
Operating life Unlimited (solid-state) Limited (tube degrades) Long (electrode wear)
CE value output Yes No Yes
Important context:
For stainless steel grades, high-alloy steels, and heavy metal analysis where carbon is not 
the primary concern, handheld XRF remains the established choice due to its non-
destructive nature and high accuracy on heavier elements. The LIS-02 is not a universal 
replacement for XRF — it is a complement or replacement in workflows where carbon, light 
elements, or argon-free operation matter.
When to Choose LIBS Over XRF
• Your process requires carbon content (e.g. separating 304 from 304L stainless, verifying 
carbon steel grades, foundry control)
• You need to sort aluminum alloys by Mg and Si content
• X-ray equipment requires a radiation license that complicates field deployment
• Speed is critical and 1-second throughput outweighs XRF's non-destructive advantage
When XRF May Still Be Preferable
• Analysis of precious metals, heavy alloys, or plated surfaces where non-destructive testing 
is mandatory
• High-precision trace-element work in certified laboratory settings
• Stainless steel and high-alloy sorting where carbon content is not a differentiating factor
Technical Reference · May 2026 Page 6 of 10
Portable LIBS Spectrometer LIS-02 — Technical Reference
9. Case Study
CASE STUDY
Scrap Processing Facility — Incoming Ferrous Inspection
Industry: Scrap metal recycling  ·  Volume: High-throughput
A ferrous scrap processing facility received mixed loads of structural steel, rebar, and carbon steel 
plate from demolition and industrial sources. The facility needed to separate low-carbon steels (used 
for re-rolling) from medium- and high-carbon grades (sent to different downstream processors) and 
identify stainless and alloy steel items for premium sorting.
Prior workflow used handheld XRF for alloy identification, but XRF could not differentiate structural 
mild steel from medium-carbon plate, since carbon is invisible to XRF. Laboratory OES was available
but involved sample cutting, transport, and a 4–6 hour turnaround — impractical at the unloading 
dock.
After deploying the LIS-02 portable LIBS spectrometer, operators began spot-testing incoming loads 
at the dock. The 1-second result cycle allowed rapid sampling of multiple pieces per load. The built-in
grade library displayed the steel classification immediately, and the carbon equivalent value was 
available for high-alloy items.
< 2 sec 0 C + 20+ elements Automatic
Time per test (vs 4–6 hr Argon cylinders required Measured per shot Grade display on screen
lab)
10. User Reviews
The following summaries reflect verified user feedback documented on the NPPSD product 
platform, representing operational use across different industrial contexts.
★★★★★
"Carbon detection without argon gas is very convenient and the accuracy of other elements is reliable.
LIS-02 has simplified our day-to-day testing significantly."
Production QC Engineer
Steel processing facility
★★★★★
"Genuinely satisfied with the LIS-02. The speed and grade library make it practical for receiving 
inspection without adding lab delays to material flow."
Materials Manager
Manufacturing plant
★★★★☆
"The 50-micron spot size is useful for checking surface-treated parts. The WiFi export to our quality 
system works reliably. We use XRF alongside it for heavy alloy work."
Technical Reference · May 2026 Page 7 of 10
Portable LIBS Spectrometer LIS-02 — Technical Reference
NDT Inspector
Fabrication and inspection
11. Limitations and Honest Considerations
No single analytical instrument is optimal for every task. The following points reflect real technical 
constraints of LIBS technology and the LIS-02 specifically.
Micro-Destructive Nature
Each laser shot ablates a 50-micron spot on the sample surface. While far less destructive than an 
OES spark, it does leave a visible mark under magnification. For high-value finished surfaces — 
precision machined parts, decorative components, or thin coatings — surface damage may be 
unacceptable. XRF remains the only truly non-destructive portable option.
Low-Carbon Steel Precision
LIBS carbon measurement at very low concentrations (below ~0.05%) is technically more 
challenging than at medium and high carbon levels. For applications requiring precise 
discrimination in the ultra-low carbon range, portable OES or laboratory methods provide higher 
precision.
Surface Condition Sensitivity
LIBS analyzes a very thin surface layer. Oxidation, scale, coatings, or contamination on the sample 
surface affect the result. For thick-scaled scrap or plated material, surface preparation (wire 
brushing) improves accuracy.
Spectral Range Limitation
The LIS-02 operates in the 177–380 nm UV range. Certain elements with primary emission lines in 
the visible or near-infrared range may have reduced sensitivity compared to instruments with 
broader spectral coverage.
Laser Safety
The Class 3B laser designation requires appropriate safety protocols. The instrument includes an 
interlock and password protection, but operators still need training on laser safety procedures.
Practical note:
For most steel mills, scrap yards, and fabrication facilities handling standard ferrous and non-
ferrous alloys, these limitations are manageable or irrelevant. The constraints matter most in 
specialized applications such as thin-film analysis, ultra-low carbon steels, or high-value non-
destructive testing on finished components.
12. Frequently Asked Questions
Can the LIS-02 replace a laboratory OES spectrometer for steel certification?
Technical Reference · May 2026 Page 8 of 10
Portable LIBS Spectrometer LIS-02 — Technical Reference
Not in a certification role. Laboratory OES provides the highest accuracy and precision, particularly 
for trace elements and low-carbon ranges, and is the standard for certified material test reports. The
LIS-02 is positioned for incoming inspection, sorting, and field verification — tasks where speed and
portability matter more than certification-grade accuracy.
Does the LIS-02 require any consumables?
No ongoing consumables are required. Unlike OES (argon gas, electrodes) or XRF (X-ray tube has 
a finite life), the LIS-02's solid-state pulsed laser has an essentially unlimited operating life. The 
replaceable Li-ion battery is the only field-replaceable component.
What is the minimum sample size the LIS-02 can test?
The instrument can test in a 0.1 mm area according to manufacturer documentation. This makes it 
suitable for small parts, thin sections, or specific zones on a larger component where other portable 
analyzers would average a much larger area.
Does LIBS require a radiation license like XRF?
No. LIBS uses a laser, not X-rays. XRF analyzers are subject to radiation safety regulations in most
jurisdictions, which can require licensing and periodic inspections. The LIS-02 uses a Class 3B 
laser, which requires standard laser safety precautions but not radiation licensing.
How does the built-in grade library work?
After each measurement, the software compares the measured elemental profile against a 
database of known alloy and steel grade compositions. The closest matching grade is displayed 
automatically on the touchscreen. The library covers standard international grades, and parameters
can be adjusted to match specific application requirements.
Can it test non-metals or liquids?
The LIS-02 is designed and calibrated specifically for metal and alloy analysis. Its built-in 
calibrations and grade library are optimized for metallic samples. It is not the appropriate tool for 
geological, biological, or liquid analysis.
Is the LIS-02 suitable for outdoor field use in extreme conditions?
The temperature range covers −15 °C to +55 °C ambient and −26 °C to +40 °C for the device itself, 
which covers most outdoor inspection environments. Confirmed IP ingress protection details should
be verified with the distributor for applications with direct exposure to water spray or heavy dust.
Final Thought
The Portable LIBS Spectrometer LIS-02 occupies a clear and practical niche in industrial 
metal analysis. Its principal value is straightforward: it measures carbon in steel, in open 
air, in one second, without any consumables. No other portable instrument does that 
combination without argon gas or X-ray radiation.
For quality teams managing incoming steel inspection, scrap sorters classifying mixed 
ferrous loads, or maintenance inspectors verifying alloy grades in the field, those three 
properties — carbon, speed, no consumables — solve real problems that XRF cannot. 
Over 800 reported installations suggest the instrument has moved well beyond evaluation 
and into routine operational use.
At the same time, the LIS-02 is not a universal replacement for existing technology. XRF 
Technical Reference · May 2026 Page 9 of 10
Portable LIBS Spectrometer LIS-02 — Technical Reference
remains the better choice for non-destructive testing of finished surfaces, heavy metal 
analysis, and work where carbon content is not a variable. Laboratory OES remains the 
standard for certification-grade precision.
The practical question for a procurement or engineering team is whether carbon detection 
capability — in a portable, argon-free, one-second instrument — is worth the modest 
trade-off in surface contact and low-carbon precision. For the majority of steel service, 
scrap processing, and foundry inspection tasks, the answer appears to be yes.
Technical data sourced from manufacturer and distributor documentation (NPPSD, RiM LaS). Comparison data compiled from published
technical literature. Last reviewed: May 2026.
Technical Reference · May 2026 Page 10 of 10