Hardware & Mechanical

• True double‑beam optical system with blazed holographic grating; German tungsten lamp and Japanese long‑life D2 deuterium lamp, silicon photodiode detector.
• Wavelength range:190‑1100 nm; absorbance range:‑4 Abs ~ +4 Abs; selectable models with variable‑grade slit or fixed slit; Level‑I authoritative metrology‑institute accreditation.
• Two configuration branches: versions with 9.7‑inch capacitive color touch screen and screen‑free units. Bare instrument weight 28 kg, fixed dimension 512.1 × 274 × 572.1 mm.
• Acid‑, alkali‑ and organic‑solvent‑resistant paint finish; specially‑designed sample‑cell compartment traps spilled liquid to avoid internal hardware damage.
• Broad optional‑accessory portfolio: multi‑position cuvette holders, variable‑optical‑path cells, solid‑sample fixtures, thermostat sample rack, automatic sampler and specular‑reflection testing accessories.
• USB data export, universal‑printer support, Ethernet port and Wi‑Fi network connection.

Software & Functions

• Simplified workflow: measurement can be initiated with three clicks.
• Expandable application platform supporting online teaching, intelligent assessment and water‑quality test functions.
• User‑customized test methods, migratable via storage media or network transmission.
• Expandable data storage capacity; capable of dynamic tracking for fast‑changing spectra such as nanoparticle colloidal‑gold aggregation.

TU700 double‑beam UV‑Vis spectrophotometer works in accordance with the Lambert‑Beer Law.
Deuterium lamp produces ultraviolet‑band light while tungsten lamp provides visible‑band radiation. Incident light is dispersed by blazed holographic grating and further split by the double‑beam optical system into reference beam and sample beam. After travelling through reference and sample cuvettes respectively, light signals are collected by silicon photodiode detector. By comparing light‑intensity difference between two beams, the instrument computes absorbance and transmittance, accomplishing spectral scanning, photometric tests and quantitative concentration analysis for UV‑Vis absorbing samples. The true double‑beam design delivers superior stability for dynamic spectral‑change monitoring.

• Advanced laboratory UV‑Vis analysis: fast dynamic spectral monitoring (e.g. nanoparticle colloidal‑gold aggregation), high‑concentration sample direct measurement like potassium permanganate solution, spectral scanning and quantitative assay.
• Chemical, pharmaceutical and material‑science research laboratories for substance identification and concentration determination.
• Educational‑lab experiments, online teaching and intelligent assessment using extended platform capabilities.
• Environmental water‑quality detection and routine environmental‑sample analysis.
• Solid‑sample measurement including sheet materials, crystal surfaces and coated lenses for absorption and specular‑reflectance testing when fitted with corresponding optional fixtures.