Custom UV & Ozone-Free Quartz Tubes

Parameter	Typical Range
OD	8–50 mm
Wall thickness	1–4 mm
Length	Up to 3,000 mm
Material grade	Confirmed per application, sent with your quote
OH content	Confirmed per application
Transmission at key wavelength	Confirmed per application
UV cutoff wavelength	Confirmed per application
Ozone-generating / ozone-free designation	Set by the grade selected for your order

Inquiry

Quartz Glass supplies quartz tubing selected by material grade for UV lamp and process applications — the grade determines how much UV actually reaches your target, and whether the tube generates ozone as a byproduct.

Dimensions above are typical for lamp and process tubing; material grade, OH content, and transmission figures depend on the specific quartz stock used and are confirmed against a real datasheet at quote time rather than quoted generically here.

Ozone-Generating vs. Ozone-Free Quartz Tubing

Quartz that transmits UV around 185 nm generates ozone, because that wavelength splits atmospheric oxygen. Quartz formulated to block roughly that region — while still passing 254 nm — is sold as ozone-free. Which one you need depends on the application: ozone-generating tubing is specified when ozone is the point (air or water treatment), and ozone-free is specified when it's a byproduct to avoid (most general germicidal or curing lamps in occupied or enclosed spaces).

Tell us which output you need — 185 nm, 254 nm, or both — and we'll confirm which grade applies.

UV Transmission, Cutoff Wavelength and Material Grade

OH content in the quartz is the main variable behind deep-UV transmission — generally, higher-OH synthetic material transmits further into the deep UV than lower-OH or natural quartz, though the exact cutoff depends on the specific melt and grade. Rather than publish a generic transmission curve here, Quartz Glass confirms cutoff wavelength and transmission at your operating wavelength against the actual material grade sourced for your order.

UV Quartz Tube Factory Standard & Manufacturing Limit

Material grade also limits which OD, wall, and length combinations are available — not every grade comes in every stock size, so grade and dimensions are confirmed together, not separately. See the table above for typical dimensional range; send your required wavelength and grade so we can confirm what applies.

Tube Diameter, Wall Thickness and Lamp Geometry

Tube OD and wall are usually set by the lamp or fixture the tube fits into, not chosen independently — confirm your lamp type or fixture drawing alongside the dimensions. End finishing for lamp tubes typically means fire-polished open ends or a pinch-sealed end for lamp assembly; tell us which your design needs.

Before shipment we check dimensions, wall thickness, appearance, end condition, and — where provided — material batch or grade documentation.

185 nmOzone-Generating Band

254 nmGermicidal Band

8–60 mmReference Lamp OD

1–2 mmReference Lamp Wall

±0.3 mmReference OD Tolerance

3,000 mmGeneral Length Envelope

Specifications

UV & Ozone-Free Tube Specifications

Parameter	Reference Capability / Requirement
Material Grade	UV-transmitting JGS1-class or titanium-doped ozone-free quartz
Target Wavelength	185 nm / 254 nm / application-specific UV band
185 nm Requirement	Transmit for ozone-generating lamps or suppress for ozone-free operation
254 nm Requirement	Maintain the germicidal output required by the lamp design
Reference OD	8–60 mm for common lamp and sleeve formats
Reference Wall	1–2 mm for common lamp formats
OD Tolerance	Reference ±0.3 mm
Length	5–3,000 mm general fabrication envelope; specialty raw-tube availability may be narrower
Traceability	Finished dimensions linked to the selected UV material grade

Standard Series

UV Lamp & Sleeve Reference Series

OD Series	Wall	UV Function	Typical Equipment
Ø8 / 10 / 12 mm	1 mm	185 or 254 nm	Compact lamps and analytical sources
Ø15 / 18 / 20 mm	1–1.5 mm	UV transmitting	Germicidal and photochemical lamps
Ø25 / 30 mm	1.5–2 mm	Ozone-free option	UV curing and air-treatment systems
Ø35 / 40 mm	1.5–2 mm	Grade selected	Protective lamp sleeves
Ø50 / 60 mm	2 mm	Grade selected	Immersion sleeves and reactor envelopes
Custom formed tube	By drawing	Material-specific	Closed ends, flanges and welded assemblies

Dimensional Tolerances

Lamp-Tube Dimensional & Material Controls

Feature	Size / Condition	Reference Tolerance
OD	8–60 mm reference	±0.3 mm
Wall Thickness	1–2 mm reference	Tube-wall reference tolerance by size
Cut Length	Up to 3,000 mm	±0.5 mm standard; ±0.1 mm precision where geometry permits
Straightness	Long lamp envelopes	Specified according to OD and finished length
185 nm Behavior	Ozone / ozone-free	Verified by selected material grade
254 nm Behavior	Germicidal output	Specified with the lamp requirement
Material Identity	Finished lot	Traceable to UV or titanium-doped raw tube

Configurations

UV Tube & Lamp-Envelope Configurations

UV-Transmitting TubePasses the specified deep-UV band for process use

Ozone-Free TubeTitanium-doped grade suppresses the 185 nm ozone-forming region

Straight Lamp EnvelopeCut and finished for electrode or lamp assembly

Closed-End SleeveProtective immersion sleeve for UV reactors

Double-Open SleeveReplaceable outer tube around a UV lamp

Flanged UV TubeQuartz flange or sealing interface to drawing

Ported Photochemical TubeBranches for gas, liquid or sampling connections

Custom Formed EnvelopeBent, welded or multi-section UV assembly

Material Selection

UV-Transmitting & Ozone-Free Quartz Grades

Electric-Fused QuartzGrade-specific UV cut-offOH 5–150 ppm; heat treatment can adjust OH. General-purpose continuously drawn stock. Confirm UV boundary by grade datasheet.

Flame-Fused Quartz · JGS2220–2500 nmOH 120–260 ppm; UV-visible optical components.

Synthetic Fused Silica · JGS1185–2500 nmSiO₂ ≥99.999%; OH ≈1000 ppm. Selected for deep-UV transmission; strong OH absorption near 2730 nm.

Vacuum-Fused / Low-OH · JGS3Grade-specific UV–IR / 260–3500 nmVacuum-fused OH <3 ppm; JGS3-class OH ≤10 ppm. Use the lot certificate and transmission curve at the working thickness.

OH content varies by grade and batch; the lot certificate is authoritative. Compare material routes and typical transmission data.

Fabrication

Cutting, Closing, Forming & Grade Traceability

Material Selection185/254 nm function matched to the raw quartz grade
Precision CuttingLamp and sleeve lengths produced to the assembly drawing
End ClosingRounded or formed ends for immersion and protective sleeves
Fire PolishingSmooth tube ends for assembly and handling
Quartz WeldingPorts, flanges and extensions joined without mixing material identity
Final VerificationDimensions and selected UV grade recorded for the finished component

Applications

UV & Ozone-Control Applications

UV Sterilization254 nm lamp sleeves for water, air and surface systems

Ozone Generation185 nm-transmitting envelopes for ozone-producing lamp designs

Ozone-Free Germicidal LampsTitanium-doped tubing suppresses 185 nm while retaining required 254 nm output

UV CuringLamp envelopes and protective sleeves for coatings, inks and adhesives

UV-Ozone CleaningDeep-UV quartz tubes for semiconductor and optical surface treatment

Photochemical ReactorsImmersion sleeves and ported tubes for UV-driven reactions

FAQ

Frequently Asked Questions

What is the difference between ozone-generating and ozone-free quartz?

Ozone-generating designs require transmission near 185 nm. Ozone-free titanium-doped quartz suppresses that region while retaining the required output around 254 nm.

Which dimensions are common for UV lamp tubes?

Reference lamp sizes use OD 8–60 mm and walls around 1–2 mm; the selected UV grade may have a narrower raw-tube range.

Can UV tubes be closed or made as immersion sleeves?

Yes. Tubes can be cut, closed, fire-polished, flanged or welded into protective sleeves and reactor assemblies.

How is the UV grade verified?

Material identity and wavelength requirement are specified with the order so the finished geometry remains traceable to the selected raw-tube grade.

Need a UV-transmitting or ozone-free quartz tube?Specify 185/254 nm behavior, OD, ID, wall, length, lamp function and end geometry.

Open the Tube Configurator

Engineering Data

Grade-Qualified Material Purity

Electric-fused / flame-fused quartz: SiO₂ ≥99.99%; synthetic JGS1-grade fused silica: ≥99.999%. Grade and lot certificate govern supplied material.

Engineering Data

Formed Stock versus Cold-Cut Dimensions

Formed stock and finished cut parts use different length tolerances. Continuously drawn transparent stock: ±1.0 mm at OD ≤50 mm / ±2.0 mm at OD >50 mm. Rotationally fused opaque stock: ±5.0 mm. Cold-cut finished parts: standard ±0.5 mm; precision ±0.1 mm only where agreed for the finished geometry.