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721N VIS Spectrophotometer

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Model NO. 721N

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Minimum Order 1unit

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721N VIS Spectrophotometer has the holographic blazed grating monochromator has the advantages of high wavelength accuracy, good monochromaticity and low stray light.
● Linear regression method and coefficient method are added to the concentration test method.
● USB interface is added, and large capacity memory can store 30 concentration curves.
● Adopt microcomputer measurement system, with high conversion accuracy of T-A, automatic adjustment of
● 0% T and 100% T, concentration factor setting and concentration direct reading.
● High accuracy, Good Reproducibility and Stability of Measurement Readings.
● Automatic light gate technology, No need blackbody, to protect the photoelectric sensor

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Features：

● Sample compartment for 5-50mm cuvettes
● Precise automatic T/A changeover
● Automatic zero and full scale adjustment
● Equipped with USB port
● Direct concentration read-out and concentration factor setting function
● Automatic light gate technology to protect photoelectric sensors

Specification：

Model	L3	722N	721N
Photometry	Split Beam	Split Beam	Split Beam
Monochromator Type	Czerny-Turner	Czerny-Turner	Czerny-Turner
Focal Length	160mm	160mm	160mm
Grating	1200 lines/mm	1200 lines/mm	1200 lines/mm
Detector	Silicon Photocell	Silicon Photocell	Silicon Photocell
Spectrum Bandwidth	1.8nm	2nm	2nm
Wavelength Setting	8-inch color touch-screen	Manual Turn Knob	Manual Turn Knob
Wavelength Range	325-1100nm	325-1100nm	340-1100nm
Wavelength Accuracy	±0.5nm	±2nm	±2nm
Wavelength Repeatability	≤0.2nm	≤1nm	≤1nm
Scanning Speed		Fast-Medium-Slow	Fast-Medium-Slow
Stray Light	≤0.03%T( at 360nm NaNo2 )	≤0.1%T( at 360nm NaNo2 )	≤0.1%T( at 360nm NaNo2 )
Photometric Range	0.0-200.0% T -0.301-4.000 A 0.000-9999 C	0.0-200.0% T -0.097-4.000 A 0.000-9999 C	0.0-100.0% T 0.000-1.999 A 0.000-1999 C
Photometric Accuracy	±0.5% T ±0.002 Abs (0-0.5A) ±0.004 Abs (0.5-1A)	±0.5% T ±0.004 Abs (0-0.5A) ±0.008 Abs (0.5-1A)	±0.5% T ±0.004 Abs (0-0.5A) ±0.008 Abs (0.5-1A)
Photometric Repeatability	≤0.2% T 0.001 Abs (0-0.5A) 0.002 Abs (0.5-1A)	≤0.2% T 0.002 Abs (0-0.5A) 0.004 Abs (0.5-1A)	≤0.2% T 0.002 Abs (0-0.5A) 0.004 Abs (0.5-1A)
Noise	100%（T）noise≤0.2%(T) ， 0%（T）noise≤0.1%(T)	100%（T）noise≤0.3%(T) ， 0%（T）noise≤0.2%(T)	100%（T）noise≤0.3%(T) ， 0%（T）noise≤0.2%(T)
Power	AC220V±22V 50Hz±1Hz, 120W	AC220V±22V 50Hz±1Hz, 120W	AC220V±22V 50Hz±1Hz, 80W
Packaging Size	710mm X 590mm X 505mm 0.21M³ 40kg	580mm X 460mm X 345mm 0.1M³ 16.5kg	580mm X 460mm X 345mm 0.1M³ 12.5kg