Labo LB-48B desktop Whiteness Instrument
LB-48B
Labo LB-48B Whiteness meterSPEC
Labo LB-48B Whiteness meterDetails
Labo LB-48B Whiteness meterPacking list
- SKU
- NB006498
- Measurement range
- 1~160%
- Resolution
- 0.1
- Precision
- △R457≤0.5、△Y≤1.0
- Zero drift
- ≤0.1%
- Indication drift
- ≤0.1%
- Error of indication
- ≤0.5%
- Repeatability
- ≤0.1%
- Mirror reflection error
- ≤0.1%
- integrating sphere
- < unk > 150mm, test hole < unk > 30mm
- Specimen size
- Test plane ≥ 0019 30mm, thickness ≤ 40mm
- Dimensions
- 330*264*400mm
- Net Weight
- 20kg
- Power Supply
- AC220V 50HZ
use
LB-48B is a device developed for whiteness measurement in the paper industry, and can also be used for the measurement of whiteness of other materials, such as flour, talcum powder, plastics and ceramics, etc., the instrument simulates the D65 light source, diffuse/vertical illumination observation conditions, the internal reflection factor (%) of the material to the main wavelength of 457nm blue light under the observation condition of luminance (whiteness) to express the brightness (whiteness) measurement results.
| Main test items: | ||||
| 1. Measure ISO brightness (i.e., R457 whiteness), and the fluorescence whiteness produced by the emission of fluorescent substances can also be measured for the samples with fluorescent whitening. | ||||
| 2. Measure the brightness stimulation value | 3. Determine opacity | 4. Measure transparency | 5. Measure the light scattering coefficient and absorption coefficient | 6. Measure the ink absorption value |
Meets standards
| GB/T7974 "Determination of brightness (whiteness) of paper, cardboard and pulp (diffusion/vertical method)" | ISO2469 Paper, Cardboard and Pulp - Determination of Diffuse Reflectance Factor |
| GB/T7973 "Paper, cardboard and pulp – Determination of diffuse reflection factor (diffuse/perpendicular method)" | ISO2470 Paper & Cardboard - Whiteness Measurement (Diffusion/Vertical Method) |
| ISO2471 "Determination of --- Opacity (Paper Backing) of Paper and Cardboard (Paper Backing--- Diffuse Reflectance Method" | GB/T8940.1 "Paper and cardboard whiteness determination method" (45/0 directional reflection method) |
| ISO9416 "Paper - Determination of Light Scattering and Light Absorption Coefficient" (Kubelka-Munk) | GB/T2679 |
| GB/T1543 "Paper and cardboard - Determination of opacity (paper backing) (diffuse reflection method)" | GB/T12911 "Determination of the Absorption of Paper and Cardboard Inks" |
| GB/T10339 "Determination of light scattering and light absorption coefficient of paper, cardboard and pulp" | GB/T9338 "Fluorescent brightener -- Determination of relative whiteness -- Instrument method" |
| GB/T13025.2 "General test method for salt production industry - determination of whiteness" | GB/T2913 "Test Methods for Whiteness of Plastics" |
| GB/T5950 "Measurement method for whiteness of building materials and non-metallic mineral products" |
Features
The appearance of the instrument is novel and compact, and the professional circuit design effectively ensures the accuracy and stability of the measurement data;
The instrument simulates D65 illuminator lighting;
The instrument uses D/O illumination to observe the geometric conditions. The diameter of the diffuser ball is 150mm, the diameter of the test hole is 30mm (19mm), and the light absorber is provided to eliminate the influence of the specimen mirror reflected light;
Using large-screen high-pixel LCD module, Chinese display and prompt operation steps to display measurement and statistical results, friendly human-machine interface makes the instrument operation simple and convenient;
The instrument adds a printer and adopts imported thermal printing core, which does not need to use ink and ribbon, no noise during work, and fast printing speed.
The instrument is equipped with a standard RS232 interface, which can be used for communication with microcomputer software；
The instrument is protected from power failure, and calibration data will not be lost after power failure.
- 1How can the paper industry achieve greater whiteness?
- 2What is the whiteness index?
- 3What are whiteness and yellowness?
- 4What is a desktop Whiteness Meter?
- 5Qingtong Brocade YQ-Z-48B Whiteness meter operating instructions
- 6Whiteness meter use precautions
孙兆义 - 《中华纸业》
- 7The working principle and operation method of Whiteness Meter
- 8XT-48B/BN whiteness Tester operating instructions
- 9The difference between Colorimeter, density meter and Whiteness Meter
- 1JJF 512-2021《Whiteness Meters》
- 2GB/T 39307-2020《Fluorescent whitening agents—Determination of shade and relative whiteness—Plastic coloring》
- 3JJG (轻工)48-2000《Reflectometer》
- 4JJG (轻工)48-2000《Reflectometer》
- 5JJG 512-2002《Whiteness Meter》
- 6GB/T 10339-2018《Paper, board and pulp—Determination of light scattering and absorption coefficients(Kubelka-Munk method)》
- 7GB/T 9984.1-2004《》
- 8GB/T 2913-1982《Test for whiteness of plastics》
- 9GB/T 13176.1-1991《The measurement of whiteness for powdered detergents》
- 10GB/T 8940.2-2002《Pulp--Preparation of laboratory sheets for the measurement of brightness》