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Choosing a NaI(Tl) Crystal supplier in 2026 requires more than comparing a single catalog price. Crystal size, optical finish, aluminum housing, photomultiplier compatibility, and delivery requirements can change the final quotation significantly. Small detector windows may cost less, while large, custom-shaped assemblies often require individual engineering review.

This guide examines leading suppliers, practical price ranges, and the technical details behind each offer. Companies such as Saint-Gobain Crystals, Hilger Crystals, REXON Components, and Scintillation Materials are often considered by research laboratories, medical equipment developers, and radiation detection manufacturers. Their products should be compared through documented specifications, not reputation alone. Useful evidence includes energy resolution data, crystal uniformity, hygroscopic protection, calibration records, and quality-control procedures.

Prices vary widely.

A basic encapsulated NaI(Tl) Crystal may be affordable for standard detection work, while a high-resolution assembly can cost substantially more. Buyers should request quotations with dimensions, window material, reflector type, connector requirements, and testing conditions clearly stated. Delivery time also matters, especially when crystals require custom machining or export documentation.

A perfect ranking is difficult. Public prices are often incomplete, and supplier responses may differ between regions. That limitation deserves attention. Reliable purchasing depends on asking precise questions, checking recent technical datasheets, and confirming whether the quoted product matches the intended detector design. This overview offers a practical starting point, while final selection should follow application testing and verified supplier communication.

2026 Top NaI Tl Crystal Suppliers and Prices?
Table of Contents [Hide]
1 NaI(Tl) Crystal Basics: 38,000 Photons/MeV and 415 nm Emission
2 Material Performance: 230 ns Decay, 3.67 g/cm³ Density, and Hygroscopy
3 2026 Supplier Map: Crystal Grades, Certifications, and Lead Times
4 Price Analysis: Size, Encapsulation, MOQ, and 2026 Cost Differences
5 Supplier Comparison: Resolution, Dimensions, Sealing, and Warranty Terms
6 Buying Checklist: Tl Activation, PMT Coupling, and Application Requirements

NaI(Tl) Crystal Basics: 38,000 Photons/MeV and 415 nm Emission

NaI(Tl) crystal remains a practical scintillator because it converts gamma-ray energy into visible light efficiently. A commonly quoted light yield is about 38,000 photons per MeV. Its emission peaks near 415 nm, matching many photomultiplier tubes and selected silicon sensors. This wavelength is not a decorative specification. It directly affects optical coupling, sensor choice, and measured energy resolution.

In real use, the quoted photon yield can mislead. Crystal size, thallium concentration, surface finish, reflector quality, and temperature all influence output. A 1 MeV event does not always produce the same detectable signal. Moisture is another serious concern. NaI(Tl) is hygroscopic, so sealing quality deserves careful inspection. Small leaks may remain invisible until performance declines.

When comparing suppliers in 2026, request emission data, energy-resolution results, dimensions, sealing details, and inspection records. Ask whether the 38,000 photons/MeV figure is theoretical, typical, or individually measured. Price usually changes with crystal volume, geometry, encapsulation, optical windows, and testing requirements. Cheaper material may increase integration work later. That trade-off is easy to underestimate. A careful purchase also checks the 415 nm response of the planned sensor, rather than assuming compatibility from the crystal name alone.

Material Performance: 230 ns Decay, 3.67 g/cm³ Density, and Hygroscopy

2026 Top NaI(Tl) Crystal Suppliers and Prices

NaI(Tl) remains widely used in gamma-ray detection because it combines strong light output with practical production costs. Its typical density is 3.67 g/cm³, giving the crystal enough stopping power for many compact detector designs. A 230 ns decay time supports fast counting and moderate timing applications. It is not the fastest scintillator available.

Hygroscopicity requires more attention than many buyers expect. Moisture can cloud the crystal, reduce light transmission, and damage long-term energy resolution. Reliable suppliers should provide hermetic sealing, moisture-control packaging, dimensional inspection, and test data for light output and resolution. Ask whether performance data covers the finished assembly, not only the raw crystal.

Prices in 2026 depend on diameter, length, optical finish, encapsulation, and requested tolerances. Small sealed crystals may receive competitive quotes, while large low-defect pieces cost considerably more. A quotation without surface details is incomplete. That assumption can fail.

Buyers should request density confirmation, decay-time specifications, sealing materials, storage instructions, and a recent inspection report. Check the crystal after delivery for cracks, fogging, or loose windows. Even careful suppliers can experience packaging failures. A simple incoming inspection protects the detector budget and reveals problems before integration.

2026 Supplier Map: Crystal Grades, Certifications, and Lead Times

2026 Top NaI(Tl) Crystal Suppliers and Prices

The 2026 supplier map should compare capability, not just country or quoted price. NaI(Tl) crystals come in standard, low-background, hermetic, and custom-machined grades. Standard sizes usually offer shorter lead times, while large crystals, unusual geometries, and matched assemblies require longer production. Typical delivery may range from two to six weeks for stocked parts, and eight to sixteen weeks for custom orders. Confirm this in writing.

Certification separates a reliable supplier from a convenient listing. Request a material certificate, dimensional inspection report, optical finish data, and batch traceability. ISO 9001 supports process control, while RoHS and REACH declarations may matter for international projects. Ask for light output, energy resolution, moisture protection, and test conditions. Prices vary widely. Small standard crystals may cost hundreds of dollars, while large sealed assemblies can reach several thousand. These are working estimates, not fixed market rules.

Tips: Compare three written quotations using the same size, encapsulation, tolerances, and testing requirements. Ask whether the lead time starts after payment or technical approval. A supplier map is never perfect; availability changes with raw materials and detector demand. I would not accept a low price without checking packaging, warranty terms, and replacement procedures. Small details often decide the real cost.

2026 Top NaI(Tl) Crystal Suppliers and Prices

2026 Supplier Map: Crystal Grades, Certifications, and Lead Times

The chart compares anonymous supplier segments for common NaI(Tl) crystal configurations. Prices are indicative 2026 planning ranges in USD per crystal for a 2-inch diameter × 2-inch length format; actual quotations vary with crystal geometry, optical finishing, encapsulation, reflector design, testing, export controls, and order volume. Lead times represent typical production and inspection windows.

Crystal grade Typical application Common documentation
Standard spectroscopy Gamma-ray spectroscopy and general radiation detection Certificate of conformity, material traceability, optical inspection
Low-background Environmental monitoring and low-level radiation measurement Background screening report, traceability records, quality certificate
Well-counter Sample counting and laboratory instruments Dimensional report, energy-resolution data, inspection certificate
Custom large-format Security, industrial and specialized detector assemblies Design review, acceptance test report, export and shipping documentation

Price Analysis: Size, Encapsulation, MOQ, and 2026 Cost Differences

2026 Top NaI(Tl) Crystal Suppliers and Prices?

NaI(Tl) crystal prices in 2026 depend heavily on diameter, length, and finishing. A small, unencapsulated crystal may cost about USD 80–250. A 2-inch crystal often reaches USD 250–700. Larger custom units can exceed USD 2,000. Size matters. Material yield and machining time rise quickly with volume.

Encapsulation adds cost for aluminum housing, optical windows, sealing, and moisture control. Expect an additional USD 50–300 for common formats, while specialized sealing can cost more. MOQ also changes the unit price. One-piece orders usually include setup and inspection charges. Orders of 20–100 pieces may reduce prices by 10–25%, depending on tolerance and delivery terms. Freight, import charges, calibration, and protective packaging may be excluded.

From practical supplier comparisons, I have found that the lowest quote is not always the best value. One early review missed window flatness, causing later detector assembly problems. That mistake was avoidable. Ask for dimensional tolerances, light-output data, encapsulation drawings, and recent inspection records. Compare equivalent specifications, not only headline prices.

Tips: Request separate prices for one, ten, and fifty pieces. Confirm whether testing is included. Check moisture protection before shipment. For urgent projects, ask about stock availability and replacement lead time. Keep a small contingency budget, because custom sizes often create unexpected charges.

Supplier Comparison: Resolution, Dimensions, Sealing, and Warranty Terms

2026 Top NaI(Tl) Crystal Suppliers and Prices?

Supplier comparison should begin with measured resolution, not catalogue language. IAEA technical literature commonly treats 6–8% FWHM at 662 keV as a practical NaI(Tl) benchmark. Better assemblies may reach lower values under controlled conditions. Ask for the test geometry, photodetector, and temperature. Otherwise, “high resolution” remains vague. Dimensions also affect cost. A 2 × 2 inch crystal is easier to source than a large custom cylinder, but larger volumes improve detection efficiency. The U.S. Department of Energy’s radiation detection guidance links detector performance closely to active volume and shielding design.

Sealing deserves equal attention. NaI(Tl) is hygroscopic, so moisture protection can determine service life. Request details for the hermetic seal, window material, housing, and leak-test method. A thin optical window may improve light collection, yet it can reduce mechanical protection. Many commercial quotations state 12–24 months of warranty coverage. Read the exclusions carefully. Some warranties cover the crystal only, not the photodetector, connector, shipping damage, or moisture exposure. Prices should be compared by complete configuration, not crystal size alone. I have seen low quotes become expensive after sealing and testing were added. That comparison was incomplete. Supplier documentation should include an energy-resolution report, dimensional tolerance, acceptance criteria, and replacement procedure. A missing test record is not automatically a failure, but it deserves questions.

Buying Checklist: Tl Activation, PMT Coupling, and Application Requirements

2026 Top NaI(Tl) Crystal Suppliers and Prices?

Buying Checklist: Tl Activation, PMT Coupling, and Application Requirements

NaI(Tl) crystal prices depend on size, geometry, optical finish, encapsulation, and testing. Public supplier quotes often range from several hundred to several thousand US dollars per assembly. Treat broad price lists cautiously. They may exclude photomultiplier coupling, electronics, shielding, or export packaging. MarketsandMarkets projects the radiation detection, monitoring, and safety market to grow from about USD 3.3 billion in 2024 to USD 4.8 billion by 2029. This growth increases demand, but it does not create one standard crystal price.

Thallium activation requires more than a percentage printed on a datasheet. Ask for the dopant range, energy resolution, light output, and batch test method. Excessive activation can reduce performance, while inconsistent activation may produce uneven spectra. Small differences matter. For gamma spectroscopy, request a measured resolution at 662 keV, not only a claimed percentage. The IAEA’s nuclear instrumentation guidance emphasizes calibration, detector stability, and traceable measurement practices.

PMT coupling deserves equal attention. Confirm the optical window, coupling compound, surface flatness, and mechanical pressure. A poor interface can waste photons before they reach the PMT. Match crystal dimensions and decay behavior to the application. Portal monitoring, well counting, environmental surveys, and teaching instruments need different compromises. I have seen buyers select the cheapest crystal, then pay more for adapters and retesting. That is an avoidable lesson, although supplier documentation is not always complete. Check every critical value before purchase.

2026 Top NaI(Tl) Crystal Suppliers and Prices? - Buying Checklist: Tl Activation, PMT Coupling, and Application Requirements

Crystal Format Typical Dimensions Typical Tl Activation Key Technical Data PMT Coupling Requirement Typical Applications Indicative 2026 Price Range
(USD per piece)		 Buying Priority
Small cylindrical crystal Ø25 × 25 mm to Ø50 × 50 mm Approximately 0.05–0.5 mol% Tl, specified by the manufacturer Density: approximately 3.67 g/cm³
Emission maximum: approximately 415 nm
Light output: approximately 38,000 photons/MeV
Decay time: approximately 230 ns 		Optical grease or optical cement matched to the 415 nm emission range. Use a reflective wrap on non-coupled surfaces and maintain a light-tight seal. Laboratory gamma counting, educational instruments, compact scintillation probes US$80–250 Standard
Medium cylindrical crystal Ø50 × 50 mm to Ø75 × 75 mm Approximately 0.05–0.5 mol% Tl, with lot-to-lot uniformity documented Energy resolution commonly around 7–9% FWHM at 662 keV, depending on geometry, photodetector, electronics, and crystal quality Direct coupling to a suitable PMT window is preferred. Check optical-window material, coupling-agent compatibility, and mechanical pressure. Handheld isotope identification, environmental monitoring, industrial survey meters US$250–800 High
Large cylindrical crystal Ø75 × 75 mm to Ø100 × 100 mm Approximately 0.05–0.5 mol% Tl; request radial uniformity and emission consistency High stopping power for gamma rays due to the high density and effective atomic number. Larger volume improves detection efficiency but increases mass and cost. Use a large-area PMT or segmented photodetector. Verify flatness, optical contact over the full face, and support against shock. Portal monitoring, bulk gamma detection, radiation protection systems US$800–2,500 High
Rectangular or square crystal 25 × 25 × 25 mm to 100 × 100 × 100 mm Approximately 0.05–0.5 mol% Tl, adjusted to the required light output and resolution Geometry can be optimized for arrays, imaging systems, and compact detector housings. All exposed surfaces should be optically and mechanically specified. Use optical grease, optical pads, or approved cement according to service temperature. Avoid air gaps, which reduce photon transfer and can cause position-dependent response. Gamma cameras, detector arrays, spectroscopy modules, security screening US$180–1,800 High
Thin slab or tile 50 × 50 × 3–10 mm to 200 × 200 × 10 mm Approximately 0.05–0.5 mol% Tl; specify thickness uniformity and surface finish Lower thickness reduces gamma stopping efficiency but supports wide-area coverage, lightweight designs, and multi-channel detector assemblies. Couple the readout face to a PMT, SiPM array, or wavelength-compatible light guide. Specify edge treatment and reflector design for uniform light collection. Large-area radiation monitors, medical detector modules, research instrumentation US$150–1,500 Application-Dependent
Pixelated array Typical pixel pitch: 2–10 mm; array size: 25–200 mm Each pixel should have consistent Tl activation and optical response Requires pixel-to-pixel light-output uniformity, dimensional tolerances, low cross-talk, and documented assembly alignment. Usually paired with a multi-anode PMT, SiPM array, or optical light guide. Request the coupling method, pixel map, gain correction data, and dead-channel limits. Position-sensitive gamma detection, imaging, tomography, particle tracking US$1,500–12,000 High
Encapsulated crystal assembly Crystal size plus housing, reflector, window, and mounting features Activation data should be traceable to the crystal lot and final assembly Encapsulation protects hygroscopic NaI(Tl) from moisture. Housing material, window thickness, leak tightness, and operating temperature must be specified. Confirm whether the assembly is supplied for direct PMT coupling, optical-window coupling, or integration with a light guide. Field instruments, portable detectors, industrial and nuclear monitoring equipment US$350–3,500 High
Custom high-resolution configuration Project-specific dimensions, tolerances, and surface geometry Supplier should provide Tl activation range, uniformity data, and acceptance criteria May include selected material, improved optical finish, controlled geometry, enhanced energy-resolution screening, and application-specific testing. PMT spectral response should overlap the approximately 415 nm emission peak. Require coupling tests with the intended PMT or photodetector where possible. Advanced spectroscopy, scientific instruments, qualification programs US$2,000–20,000+ Highest
Replacement crystal for an existing detector Must match the original active area, height, window, and housing interface Match the original detector response rather than selecting Tl concentration by name alone Confirm dimensions, mass, optical output, energy-resolution target, and background response under the existing electronics settings. Verify PMT window diameter, optical interface, grease or cement type, reflector thickness, and compression limits. Repair, retrofit, laboratory replacement, maintenance inventory US$250–4,000 High
Procurement notes: NaI(Tl) is hygroscopic and should normally be hermetically encapsulated or protected from moisture. Prices are indicative budgetary ranges for 2026 and vary with crystal volume, tolerances, encapsulation, testing, quantity, shipping, and detector integration. Before purchase, request a datasheet, crystal-lot traceability, Tl activation specification, emission and light-output data, energy-resolution test conditions, surface-finish details, coupling instructions, operating-temperature limits, packaging requirements, and acceptance-test criteria.

FAQS

Why is NaI(Tl) widely used for gamma-ray detection?

It offers strong light output and practical production costs. Its density is about 3.67 g/cm³. This provides useful stopping power in compact detectors.

What does a 230 ns decay time mean?

A 230 ns decay time supports fast counting and moderate timing applications. It is not the fastest scintillator available. That limitation matters in demanding timing systems.

Why is moisture protection important?

NaI(Tl) absorbs moisture from the environment. Humidity can cloud the crystal and reduce light transmission. Long-term energy resolution may also decline.

What sealing features should buyers request?

Request hermetic sealing, moisture-control packaging, and suitable optical windows. Ask for sealing materials and storage instructions. Check whether testing covers the finished assembly.

How much can NaI(Tl) crystals cost in 2026?

Small unencapsulated crystals may cost about USD 80–250. A 2-inch crystal often costs USD 250–700. Large custom units can exceed USD 2,000.

What costs are added by encapsulation?

Common encapsulation may add USD 50–300. This can include aluminum housing, optical windows, sealing, and moisture control. Specialized sealing may cost more.

Can larger orders reduce the unit price?

Orders of 20–100 pieces may reduce prices by 10–25%. One-piece orders often include setup and inspection charges. Freight, calibration, and import costs may remain separate.

What should buyers inspect after delivery?

Check for cracks, fogging, loose windows, and dimensional problems. Review light-output and energy-resolution data. Check it immediately. Packaging failures can still happen.

Why should buyers avoid choosing only the lowest quotation?

A low quote may omit window flatness, testing, or surface tolerances. One overlooked detail can delay detector assembly. I once missed this issue. The later correction was avoidable.

Which details should appear in a quotation?

The quotation should state diameter, length, optical finish, encapsulation, and tolerances. It should also identify testing, delivery time, and replacement arrangements. Otherwise, comparison becomes unreliable.

Conclusion

NaI(Tl) Crystal remains a widely selected scintillation material because it offers approximately 38,000 photons/MeV, peak emission near 415 nm, a decay time of about 230 ns, and a density of 3.67 g/cm³. However, its hygroscopic nature requires careful handling, protective encapsulation, and reliable sealing to maintain optical and mechanical performance. In 2026, supplier selection should consider crystal grade, dimensional tolerances, quality certifications, production capacity, and expected lead times.

Pricing varies according to crystal size, geometry, surface finish, encapsulation method, minimum order quantity, and customization requirements. A practical comparison should examine energy resolution, available dimensions, sealing quality, PMT coupling compatibility, inspection standards, and warranty terms rather than focusing only on unit cost. Before purchasing, buyers should confirm Tl activation, emission matching with the selected photomultiplier, environmental operating conditions, and application-specific performance requirements. This approach supports a balanced decision between cost, durability, delivery schedule, and detection efficiency.

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Sophia

Sophia

Sophia is a dedicated marketing professional at Kinheng Crystal Materials (Shanghai) Co., Ltd., a leading high-tech enterprise in the optoelectronics sector. With a profound expertise in the company’s innovative product line, she plays a pivotal role in communicating the value of high-quality,......
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