Feature

●★Whiteness represents Whiteness Mean R457 blue whiteness According to test conditions MeasuringCondition 45/0 Measuring range Measuring Range 0 to 199.
●★Minimum Indication Minimum Readout 0.1，Indication error Basic Error ≤ ± 1
●★Repeatability Repeatability ≤0.2 ，Zero drift Zero Draft ≤ ± 0.1
●★Power Supply Power Supply DC 1.5V × 5 AA alkaline batteries ，power adapter Dimensions :AC110-240V,50/60Hz / DC7.5V / 0.2A .
●★External Dimension 235 × 75 × 65 mm Features Characteristics LCD .


Description

Portable Digital Whiteness Meter can be widely used in textile printing and dyeing, paint and paint, chemical building materials, paperboard, plastic products, white cement, ceramics, enamel, talc powder, starch, flour, salt, measurement, commodity inspection, detergent, cosmetics and other substances whiteness measurement.

the main technical parameters

product name Portable whiteness meter
Specifications Model WSB-1
Measuring range 0-199
Whiteness formula Blue whiteness WB = R457
Light source LED light source
According to test conditions In line with GB/T3978 provisions 45/0
Show LCD Display
Measuring aperture Ø 15mm
Resolution 0.1
Zero drift ≤0.2 / 10min
Indication drift ≤0.3 / 3min
Measurement repeatability 0.2
Ambient temperature -5 ℃ ~ 35 ℃
Relative humidity ≤85% RH
Power supply-A DC 1.5V × 5 AAA alkaline batteries;
Power supply-B AC 110-220V~ , 50/60Hz , DC7.5V / 0.2A power adapter
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For powder samples, we recommend you to purchase powder molding device at the same time

If the measured surface of the sample, there can not be improved "uneven" phenomenon, or has a cross, marks the difference between the longitudinal profile, the sample can be measured in different locations or at different angles, taking the measured value of the average brightness , on behalf of this sample whiteness.

For paper, cloth and a variety of fiber fabric samples to take several layers overlap, making it opaque so far ( until the number of sheets to make it opaque , an increase of the number of sheets of the sample so far is the whiteness constant opacity).

For powder or fine granular sample, it should be in full bloom in a powder sample vessel, with a surface clean and smooth glass plate to flatten the surface of the sample. Due to the different test conditions will bring a different test results. Therefore, in order to establish whiteness relationship between similar samples shall be uniform provisions sampling method to test the samples.

This powder molding device can be used for a variety of powder and granular substances

  • kaolin, calcium carbonate, talc, barite,
  • activated clay, titanium dioxide,barium sulfate
  • Magnesium Oxide, flour, cement, paint etc
  • ASIN:B078HSTJPH