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Deliver consistent results and avoid surprises with a trusted instrument designed for dependable performance, seamless workflow integration, and precision in every test.
When accurate results can’t be compromised, water professionals trust the DR3900 Laboratory Spectrophotometer. It is a visible spectrum spectrophotometer (320–1100 nm), providing the range needed for a wide variety of water analysis applications.
Known for its reliability and consistent performance, the DR3900 helps build confidence in every measurement—helping you avoid unexpected surprises and deliver data you can stand behind.
• Dependability in every test: Advanced optics minimize the risk of errors, providing stable, repeatable results—even with everyday glassware issues.
• Trusted by experts: Proven performance in water quality analysis means your team can rely on the DR3900 for regulatory and operational needs year after year.
• Compliance made simple: Automatic data logging and robust result tracking support regulatory reporting and quality assurance, reducing the risk of missing key records.
• Fewer surprises, more control: Pre-programmed methods and guided workflows help minimize user mistakes, making each analysis predictable and efficient.
• Easy for all experience levels: Clear touchscreen instructions and user-friendly design let your team deliver consistent results, regardless of who is running the test.
• Supports busy labs: Durable and compact, the DR3900 is ready for continuous use, handling the demands of high-volume testing.
Choose the DR3900 when you need a spectrophotometer you—and your team—can trust, day in and day out.
| Beam Height | 10 |
| Data Logger | 2000 measured values (Result, Date, Time, Sample ID, User ID) |
| Dimensions (H x W x D) | 151 mm x 350 mm x 255 mm |
| Display | 7″ TFT |
| Display Resolution | WVGA (800 pix x 480 pix) |
| Display Size | 7 inch (17.8 cm) |
| Display Type | Colored touch-screen |
| Enclosure Rating | IP40 |
| Interfaces | USB type A (2), USB type B, Ethernet, RFID module |
| Light Source | Gas-filled Tungsten (visible) |
| Manual Languages | English French (CDN) Spanish (SA) Portuguese (BR) Chinese Japanese Korean |
| Operating Conditions | 10 – 40 °C (50 – 104 °F), max. 80% relative humidity (non-condensing) |
| Operating Mode | Transmittance (%), Absorbance and Concentration, Scanning |
| Optical System | Reference beam, spectral |
| Photometric Accuracy | 5 mAbs @ 0.0 – 0.5 Abs 1 % at 0.50 – 2.0 Abs |
| Photometric Linearity | < 0.5 % – 2 Abs |
| Photometric Linearity 2 | ≤ 0.01 % at >2 Abs with neutral glass at 546 nm |
| Photometric Measuring Range | ± 3.0 Abs (wavelength range 340 – 900 nm) |
| Power Requirements | With external power supply |
| Power Requirements (Hz) | 50/60 Hz |
| Power Requirements (Voltage) | 110 – 240 VAC |
| Power Supply | Benchtop Power Supply |
| Preprogrammed Methods | > 240 |
| Sample Cell Compatibility | Rectangular: 10, 50 mm, 1 inch; round: 13 mm, 16 mm, 1 inch |
| Scanning Speed | > 8 nm/S (in steps of 1 nm) |
| Source Lamp | Gas-filled Tungsten (visible) |
| Specific Technology | RFID for easy method update, sample ID and Certificate of Analysis |
| Spectral Bandwidth | 5 nm |
| Standard accessories | None |
| Storage Conditions | -40 – 60 °C (–40 – 140 °F), max. 80% relative humidity (non-condensing) |
| Stray Light | < 0.1% T at 340 nm with NaNO2 |
| User Interface Languages | Bulgarian, Chinese, Croatian, Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Polish, Portuguese – Brasilian, Potuguese, Russian, Serbian, Slovakian, Slowenian, Spanish, Swedish, Turkish |
| User Programs | 100 |
| Warranty | 12 months |
| Wavelength Accuracy | ± 1.5 nm (wavelength range 340 – 900 nm) |
| Wavelength Calibration | Automatic |
| Wavelength Range | 320 – 1100 nm |
| Wavelength Reproducibility | ± 0.1 |
| Wavelength Resolution | 1 |
| Wavelength Selection | Automatic, based on method selection |
| Weight | 4.2 kg (9.3 lbs) |
| What’s included? | Includes: Spectrophotometer DR3900, adapter A for 1 in. round and 1 cm square cells, matched pair of 1 in. square glass sample cells, light shield, dust cover, printed basic user manual and benchtop power supply with 115 and 230V power cords. |
