The optical path design is reasonable, simple. Adopt filter with correction, the whiteness can be reflected quantitatively, measurement range: 0-120. Built-in high-precision sensors, combined with advanced optical devices, effectively improve measurement accuracy and stability. Digital display design ensures clear and accurate readings, and each measurement result can be accurately presented without reading errors. Standard RS232 interface and printing function, can be connected to printers and computers for output. Convenient for data analysis and processing. Split design provides greater operational flexibility and is suitable for various complex measurement environments. Measuring range: 0-120 Resolution: 0.1 Light source: LED 457 nm light source Whiteness formula: blue light whiteness WB=R457 Measurement aperture: 15mm Zero drift: 0.1 Indication stability: 0.5 Measurement repeatability: 1 Colour:As Shown Material:Plastic+Metal Package Contents: 1 x Whiteness Meter