The refractometric method uses a hand-held sugar-acidity meter and uses the principle of the ratio of refractive index of fruit juice to the concentration. This method, though simple, is also a lossy detection, and its detection accuracy is low. Visible light measurement utilizes a laboratory spectrometer to irradiate visible light onto a fruit surface, and a method of receiving transmitted light that has been absorbed by internal tissues on the opposite side of the irradiated portion. Although this method is a rapid loss detection, due to the low spectral information obtained, it is difficult to extract effective spectral information and affect its detection accuracy.
Near-infrared light measurement using a portable fruit detector uses a laboratory spectrometer to irradiate near-infrared light onto a fruit surface, and a method of reflecting light from the surface of the fruit after internal diffusion is measured. This method first performs spectral predifferentiation, smoothing, and other preprocessing, establishes a mathematical model in combination with chemometric methods, and uses the established model to predict the sugar acidity of the tested fruit. However, this method is based on laboratory spectroscopy instruments, which is costly and has no portability and ease of operation.
Item: |
SGCC 150g DX51D+Z Hot Dipped Metal Iron Galvanized Steel Coil |
Material: |
SGCC, SGCH, SPCC, SGCD, DX51D+Z, STO2Z,DX54D,DX51D |
Thickness: |
0.1 2 mm-3mm |
Width: |
600-1250mm |
Length: |
Coiled or as requested |
Surface: |
Galvanized,oiled, chromated |
Application: |
Industrial panels, roofing and siding for painting |
Types: |
Commercial / Drawing / Deep Drawing / Structural quality |
Zinc coating: |
Z 3 0-275g/m2 |
Surface Treatment: |
chromed / skinpass/ oiled/slightly oiled/ dry/ anti-fingerprint |
Surface Structure: |
zero spangle / minimized spangle / regular spangle/ big spangle |
Coil Weight: |
3-10 ton per coil |
Payment term: |
T/T,L/C |
Packing information: |
Standard seaworthy export packing: 3 layers of packing, inside is kraft paper, water plastic film is in the middle and outside GI steel sheet to be covered by steel strips with lock, with inner coil sleeve. |
Port: |
Qingdao,Tianjin port |
Delivery time: |
15-20 days,after we received your deposit |
GI,GI Steel Coil,GI Steel Sheet,Galvanized Steel Coil,Zinc Coated Steel Coil
Jinan Hengming Steel Co., Ltd , https://www.jnhengmingsteel.com