Hitachi
U 3900
Provisional entry — research in progress
This page was generated automatically from cited public sources and hasn't completed the full research pass yet. Every specification shown carries its source; more detail is added as research completes.
What it is
The Hitachi U 3900 is a UV-visible spectrophotometer. The U-3900 is a double-beam, single-monochromator system in the U-3900/3900H research-grade family.[2]
How it works
The U-3900 uses a single photomultiplier detector and supports variable band pass settings and multiple scan speeds. The U-3900 family also includes a standard sample compartment for accessories, automatic calibration, and self-diagnosis functions.[2]
Where it fits in the process flow
The U-3900 family supports measurements on solutions, thin films, turbid samples, reflectance samples, and flow-through setups through compatible accessories. The instrument also supports micro-quantity measurement through micro-focusing optics and automatic cell-length conversion.[2]
Applications
The U-3900 family serves basic research, biotechnology, and new materials work. The instrument is also used for quantitative analysis and data reporting in laboratory environments.[2]
The U-3900 supports measurements of soft, hard, and intraocular contact lenses with the integrating sphere method. The instrument also supports high-absorbance and low-transmittance measurements in the U-3900H configuration.[2]
What do the numbers mean?
Power & electrical1
Optics & imaging4
Dimensions & facilities2
Configuration & options3
Vintage & configurations
Documented models & variants
| Designation | Generation | Vintage | Changes | Source |
|---|---|---|---|---|
| U-3900H | — | — | Double-beam, double-monochromator system; supports high absorbance measurements and low transmittance. | web.archive.org[2] |
What does it need to run?
Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.
- Power requirements100, 120, 220, 230 or 240 V AC, 50/60 Hz, 300 VA[2]
Where are the manuals?
Generated from public-source data on file. Enter your email to access — nothing is published; details are routed privately.
Not publicly documented
Field notes
No research found yet — worked with this tool? Share what you know.
Frequently asked questions
What type of instrument is the Hitachi U 3900?
The Hitachi U 3900 is a UV-visible spectrophotometer.[2]
What is the optical architecture of the U-3900?
The U-3900 is a double-beam, single-monochromator system.[2]
What wavelength range does the U-3900 cover?
The U-3900 covers a wavelength range from 190 to 900 nm.[2]
What band pass settings are specified for the U-3900?
The U-3900 has variable band pass settings of 0.1, 0.5, 1, 2, 4, and 5 nm.[2]
What detector does the U-3900 use?
The U-3900 uses a single photomultiplier detector.[2]
Not publicly documented
The following facts about the U 3900 are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the U 3900 are on record.
Answerable by: OEM historical records or a trade-press announcement
The control-system platform and OS era of the U 3900 are not on record.
Answerable by: an engineer who operated it or OEM installation records
No publicly documented failure modes or field errata for the U 3900 are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the U 3900 is not on record.
Answerable by: an OEM datasheet or a fab qualification report
No publicly documented compatible parts, consumables, or accessories for the U 3900 are on record.
Answerable by: an OEM parts catalog or a service engineer
No research found yet — worked with this tool? Share what you know.
Sources & citations
Sources (2)Every fact above is drawn from these public sources
- [1]inventory listing
- [2]web.archive.org — hitachi-hightech.com (Jul 26, 2021)web.archive.org
Last updated Oct 3, 2026.