721N Visible spectrophotometerDetailed product description：

1、 Product Description:

The 721N visible spectrophotometer is a new type of computerized visible spectrophotometer launched by our company in 2007. It is an upgraded version of the traditional 721 instrument with unique added value, which can meet the needs of many units for quantitative analysis of substance content in the visible spectrum region. It is a conventional testing instrument for industries such as steel smelting, food testing, environmental testing, colleges and universities, paper electroplating, printing and dyeing, and power.

2、 Characteristics:
1. Retain all the performance and functionality of the traditional 721 instrument.
2. The working wavelength range is wide (360-1000) nm, with a wide range of applications.
3. Built in microcontroller, the instrument has a high degree of automation, with automatic adjustment of 0% T, automatic adjustment of 100% T function, and error free T-A conversion. The operation is better than the original 721 instrument
Greatly convenient.
4. 4-digit 0.8-inch height LED digital display, with a reading resolution 10 times higher than the traditional 721.
5. It has four measurement modes: transmittance (T), absorbance direct reading (C), and coefficient measurement (F), which fully meet the testing requirements.
6. Advanced optical system design, using high-quality C-T monochromator splitter grating, the instrument has resolution, metering accuracy, and stray light indicators
Quite optimized.
7. Using specialized precision pre adjusted lamps and lamp holders, users can replace and install the lamps themselves without having to adjust the light path again, which is convenient and easy.
8. The sample room is made of special engineering plastics that are resistant to solvents and strong acid and alkali, corrosion-resistant, and equipped with a removable flushing liquid tray and storage container at the bottom to meet the requirements of one
The use of some users.
9. Four links can use 10-50nm colorimetric dishes.
10. Flame retardant insulation all plastic shell, small size, light weight, beautiful appearance.

3、 Main technical indicators:

weight	6Kg
Power supply	AC：90～250V 50/60HZ
stray light	≤1.0%T
stability	Dark current: ≤ 0.3% T/3min Bright current: ≤ 1.3% T/3min
Operation method	Manual wavelength
optical system	C-T monochromator (diffractive light source)
wavelength range	360nm～1000nm
Operation method	Manual wavelength
Luminous range	T：0.0～1.999%（T） A：-0.300～2.999（A） C：0～9999（C） F：1～9999（F）
Wavelength accuracy	±3.0nm
wavelength repeatability	≤ 1.5nm; Spectral bandwidth: 6nm
Transmittance accuracy	±1.0%T（0～100%T）
Transmission density repeatability	≤0.3%T（0～100%T）