722N VIS Spectrophotometer

The 722N VIS Spectrophotometer uses a Czerny-Turner monochromator, 1200 lines/mm grating and silicon photocell detector. Its 2 nm spectral bandwidth and low stray light support stable visible-light measurements across the 325–1100 nm range.

  • 325–1100 nm WL Range
  • 2 nm Bandwidth
  • ≤0.1%T Stray Light
  • 30 Concentration Curves
722N Brochure

Features of 722N VIS Spectrophotometer

  1. 7-Inch Color Touchscreen: Clear, intuitive operation for routine measurements.
  2. 30 Concentration Curves: Supports curve storage, linear regression, coefficient methods and direct concentration readout.
  3. Automatic T/A & Zero Adjustment: Automatic T/A conversion plus 0%T/100%T adjustment reduces manual setup.
  4. 5–50 mm Cuvette Support: Accommodates different optical path lengths for various sample requirements.
  5. USB Interface: Enables convenient data connection and processing.
  6. Automatic Light Gate: Protects the photoelectric sensor without requiring a blackbody.

Application Fields of 722N VIS Spectrophotometer

DV-8200 Application in Education & Teaching Laboratories

Education & Teaching Laboratories

Widely used in teaching laboratories for demonstrating Beer-Lambert Law, calibration curves, and basic qualitative and quantitative analysis of colored solutions.

DV-8200 Application in Chemical & Industrial Process Control

Chemical & Industrial Process Control

Measuring absorbance-based color intensity and tracking reaction kinetics in dyes, coatings, inks, and electroplating solutions for routine industrial quality control.

DV-8200 Application in Pharmaceutical & Biotech Quality Control

Pharmaceutical & Biotech Quality Control

Used for quantitative analysis of APIs and finished products with visible absorbance, dissolution testing, and optional basic DNA/protein quantification and reaction kinetics monitoring via PC software.

DV-8200 Application in Water & Environmental Analysis

Water & Environmental Analysis

Used for routine colorimetric determination of ammonia nitrogen, total phosphorus, Cr⁶⁺, nitrite, and volatile phenols in environmental water quality monitoring.

DV-8200 Application in Food & Agricultural Quality Control

Food & Agricultural Quality Control

For colorimetric detection of nitrite, nitrate, phosphate, peroxide value, and pigments in food and agricultural products for quality control compliance.

Measurement Functions

Transmittance (%T)

Photometric range up to 0.0–200.0%T for direct transmittance measurements.

Absorbance (A)

Wide absorbance range of -0.097 to 4.000 A for routine quantitative measurements.

Concentration (C)

Direct concentration measurement from 0.000 to 9999 C, with concentration-factor setting.

Concentration Curve Analysis

Supports linear regression and coefficient methods, with storage of up to 30 concentration curves for repeated laboratory methods.

722N VIS Spectrophotometer Display

  • 722N
  • 722N

FAQ

The specified stray light is ≤0.1%T at 360 nm using NaNO₂.

The instrument is equipped with a 7-inch multi-color touchscreen.

Yes. It supports direct concentration readout and concentration-factor setting.

Yes. It supports linear regression and coefficient methods and can store up to 30 concentration curves.

Yes. A USB interface is included.

Yes. The microcomputer measurement system supports automatic 0%T and 100%T adjustment.

The sample compartment supports 5–50 mm path-length cuvettes.

No. Wavelength selection is performed with a manual turn knob.

Specifications of 722N VIS Spectrophotometer

Model722N
Product nameVIS Spectrophotometer
PhotometrySplit Beam
Monochromator TypeCzerny-Turner
Focal Length160mm
Grating1200 lines/mm
DetectorSilicon Photocell
Spectrum Bandwidth2nm
Wavelength SettingManual Turn Knob
Wavelength Range325-1100nm
Wavelength Accuracy±2nm
Wavelength Repeatability≤1nm
Stray Light≤0.1%T( at 360nm NaNo2 )
Photometric Range0.0-200.0% T-0.097-4.000 A0.000-9999 C
Photometric Accuracy±0.5% T±0.004 Abs (0-0.5A)±0.008 Abs (0.5-1A)
Photometric Repeatability≤0.2% T0.002 Abs (0-0.5A)0.004 Abs (0.5-1A)
Noise100%（T）noise≤0.3%(T) ， 0%（T）noise≤0.2%(T)
PowerAC220V±22V 50Hz±1Hz, 120W
Packaging Size580mm X 460mm X 345mm 0.1M3 16.5kg

Standrad Accessories

Operation manual1pc
UV WIN8 Spectrum data processing software1pc
Glass cuvette 10mm4pcs
Power cable1pc
Fuse2pcs
Cuvette holder 10mm1pc

Optional Accessories

Cuvette holder50mm
Cuvette20mm 30mm 50mm

Why Choose Us?

One-Station Shopping

“Multiple suppliers” have always been an issue in the procurement process. Drawell as a one-stop laboratory equipment and scientific instruments supplier, can perfectly solve this problem. In addition to manufacturing our own equipment, we also represent other laboratory equipment. Our product lines are rich and diverse at competitive prices. Provide one-stop service to customers.

Customer-centric Services

User Training – Training by Drawell skilled engineers about installation, debug tests, technical services, etc. It can happen in our factory in China, or at the site in the customers’ country. Cost depends on where and when the training happens.

Online Support

To discuss the problem and get it resolved, online chats, real-time video calls, and remote guidance. For the after-sales stage, our online technical guidance is free and ready forever.

100% Quality Guarantee Policy

1 year free official warranty, including repairing quality-damaged parts, and offering replacements of selected parts (shipping cost is extra). 5% of the product price is charged for extending the warranty before the end of the official warranty.

Customer Feedback

customer reviews

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