Working principle: Photon Cross Correlation Spectroscopy (PCCS)
Two laser beams with the same frequency and phase emitted from the light source intersect in the testing area, and two similar light intensity signals with fluctuations are obtained on two detectors. The part with the same fluctuation of the two light intensity signals is the actual light intensity signal of the particles, while the part with different fluctuations is the interference signal, which is filtered out. The photomultiplier tube sends the same real particle signal to the correlator for processing, and the correlator sends the processing results to the computer to obtain the final test report.

parameter	Indicator
measuring principle	Photon Cross Correlation Spectroscopy (PCCS)
Scope of testing	0.5-10000nm, measurable suspension, emulsion, microemulsion and other systems
data processing	By using different calculation methods, detailed data on the average particle size and particle size distribution of nanoparticles can be provided
concentration range	ppm -70 vol.％*， And it can directly measure fluorescent substances and colored substances
light source	Semiconductor laser, wavelength 658nm, stable light source
laser power	30mw, laser power can be adjusted and controlled through software
Product laser grade	class a
measuring technique	Dual laser beams, dual detectors, TCP/IP transmission
Correlators	Multi channel correlator, minimum sampling time ≤ 30ns
Temperature control system	Peltier temperature control system, optimal testing range: 0-90 ℃, temperature automatically controlled through software Temperature stability: ≤ 0.1℃
Sample pool volume	Trace amount: 50-2000 μ l; Constant: 4ml Max
Testing time	2-5 minutes, during the testing process, the monitor dynamically monitors the fluctuation of light intensity and particle size in real-time
detector	Photomultiplier tube (PMT) detector, with strong linear characteristics, does not require calibration
Control and operation software	Suitable for Windows system: Complete set of instrument operation and maintenance manuals One set of software operation manual in both Chinese and English Original CD of instrument software System recovery CD, instrument configuration list CD
Power Supply	AC65-260V， 50/60Hz
Environmental requirements	Temperature: 15-40 ℃, humidity 20-70%, no condensation

Adopting the new Photon Cross Correlation Spectroscopy (PCCS) principle;
Dual beams and dual detectors work simultaneously, selecting only the single scattering signal generated by the particles, removing interference signals, and reducing environmental requirements;
Completely solve the problem of inevitable multiple scattering in high concentration liquids;
Can directly measure fluorescent substances and colored substances;
The testing time is 2-5 minutes, and real-time dynamic monitoring of light intensity fluctuations and particle size is carried out during the testing process;
Automatically adjust the position of the sample pool through computer software to obtain the most accurate measurement results;


According to the size of the measured particles, the output power of the laser source can be automatically adjusted by the computer;