Laboratory Paper Whiteness Meter
1. INTRODUCTION: 2. APPLICATIONS: 3. STANDARDS: 4. FEATURES: Electric battery driven Refrigeration Unit Rooftop Cooling Units,Cooling Unit For Truck Freezer,Rooftop Refrigeration Unit,Electric Refrigeration Unit XINXIANG HUATAI REFRIGERATION CO., LTD , https://www.trustht.com
This is High quality whiteness tester PN-48B .
The brightness meter is mainly used to test the whiteness of diversified objects such as paper and board,pulps and chemical fiber, textile, plastic, ceramic, enamel, fecula, salt, white cerement, porcelain clay and French chalk, etc. It can also be used to test the optical performance of sheet materials, for example, opacity test.
Paper, Board, Pulps, Chemical fiber, Textile, Plastic, Ceramic, Enamel, Fecula, Salt, White cerement, Porcelain clay and French chalk etc.
ISO 2469, ISO 2470, ISO 2471, GB/T 7933, GB/T 7974, GB/T 8940.2, GB/T 1840, GB/T 2913, GB/T 13025.2, GB/T, 1543, ISO 2471, GB/T 10339, GB/T 5950 Etc.
1). Measure the Blue Reflectance Factor (R457) of samples. Blue Reflectance Factor is so called "Blue Whiteness" or "ISO Brightness".
2). Analyze the sample to find out whether it contains any fluorescent brightener. If so, measure the fluorescent whiteness further, namely whitening rate.
3). Measure the opacity, transparency, light scattering coefficient and light absorbing coefficient.
NO.
ITEM
SPECIFICATION
1
This instrument complies with GB3978-83; Standard illuminator and illuminating--viewing conditions.
2
Simulate D65 illuminator to illuminate. Adopt d/o illuminating--viewing geometrical coanditions. Diameter of the diffusion sphere is 150mm and diameter of the testing hole is 25mm.
3
Light absorber is provided to eliminate the effect of specular reflection. Peak wavelength of spectral power distribution of R457 whiteness optical system is 457nm and its half-width is 44nm.
4
Measure and display the whiteness, Fluorescent whiteness (whitening rate) and opacity (%) etc. digitally.
5
Indication error:
0.50%
6
Sample size:
Test plate diameter should not be less than 30mm while sample thickness should not exceed 40mm.
7
Power supply:
160V-260V, 50Hz, 0.3A
8
Measure time:
3s
9
Working condition:
Temp.0-40oC, relative humidity<85%.
10
Size and weight:
L×W×H=365×260×425mm, 11kg
Company Introduction:
PNSHAR, as one SGS-Audited company & ISO-Certified company, has been engaged in the R&D and production of lab equipment for paper & packaging industries since 1985.Our products has achieved CE certificate.Â
As the leading manufacturer from China, we are enjoying the Chinese market, competing the European suppliers, American suppliers and Taiwan Suppliers.
Based on good quality and reliable performance, our lab equipments also have been exported to more than 50 countries, such as follows:
1). Europe: Italy, Germany, Hungry, Macedonia, Latvia, Czech, Switzerland, Russia, Poland, Turkey etc;
2). Asia & Oceania: Japan, Indonesia, Singapore, Australia, Hongkong, South Korea, Iran, Thailand, Viet Nam, India, Bangladesh, Jordan, Saudi Arab, Bahrain, Pakistan, Malaysia, Philippines, Myanmar, Taiwan, Oman, Uzbekistan, etc;
3). America:USA, Mexico, Argentina, Brazil, Peru, Costa Rica, Guyana, Uruguay, etc;
4). Africa: Kenya, Egypt, South Africa, Cote d'Ivoire, Cameroon, etc.
Our  Workshop:
Our ceritificate:
Our Customers:
Â