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Where does one find the EP (European Pharmacopoeia) Liquid Color Matching Standards?

Do HunterLab sphere instruments conform to ASTM D1003?

How can I upgrade or install EasyMatch QC software on a new computer?

How can I upgrade EasyMatch QC software on an existing computer?

Is there an Internet Site for converting and displaying color values?

What Fuse Protection is in place with HunterLab Instruments?

Can Power Supplies in HunterLab Instruments be used everywhere?

Optimal inter-instrument agreement and communication of color values

How do I measure Haze with EasyMatch QC?

How do I perform an DQ IQ OQ PQ RQ using EasyMatch QC-ER?

What is the Hunter Rd, a, b Color Scale?

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Blogs

Where does one find the EP (European Pharmacopoeia) Liquid Color Matching Standards?

Posted on October 17, 2012 by Ken Phillips

 EP – European Pharmacopoeia Color is a visual liquid color scale used primarily in the pharmaceutical industry. It consists of 3 primary color standard solutions (yellow, red and blue) mixed with hydrochloric acid to make 5 standard color solutions – B (brown), BY (brownish-yellow), Y (yellow), GY (greenish-yellow) and R (red).

Posted in Color and Appearance Theory, EasyMatch QC, EasyMatch QC-ER, Pharmaceuticals, UltraScan PRO, UltraScan VIS Tagged EP, European Pharmacopoeia Color Standards, pharma Leave a comment

Do HunterLab sphere instruments conform to ASTM D1003?

Posted on October 12, 2012 by Ken Phillips

Yes, but note there are two different approved instrument geometries cited in the ASTM 1003 method.

Posted in Color and Appearance Theory, EasyMatch QC, EasyMatch QC-ER, Instruments and Software Tagged haze, scattering, total transmission, transmission haze, Y Diffuse, Y Total Leave a comment

How can I upgrade or install EasyMatch QC software on a new computer?

Posted on October 5, 2012 by Ken Phillips

For either a network or local PC installation, the person installing EasyMatch QC software must be a System Administrator for the PC, with software installation privileges for both the old and new computers.

Posted in EasyMatch QC Tagged different computer, EZMQC, install, installation, re-install, re-installation, software, upgrade Leave a comment

How can I upgrade EasyMatch QC software on an existing computer?

Posted on October 5, 2012 by Ken Phillips

For either a network or local PC installation, the person installing EasyMatch QC software must be a System Administrator for the PC, with software installation privileges for that computer.

Posted in EasyMatch QC Tagged EZMQC, install, upgrade, upgrade software installation Leave a comment

Is there an Internet Site for converting and displaying color values?

Posted on September 20, 2012 by Ken Phillips

FAQ: “… Was wondering – do you know of a web site or application where  if CIELAB values were entered, the corresponding color would be displayed? Can I also convert from one color scale to another?”

Posted in Color and Appearance Theory, EasyMatch QC, EasyMatch QC-ER Tagged appearance characteristics, color calculator, color display, color render, hand enter, internet color calculator, manually enter color values, QC software Leave a comment

What Fuse Protection is in place with HunterLab Instruments?

Posted on September 19, 2012 by Ken Phillips

All HunterLab instruments have fuses built into the main circuitry to protect the instrument against unusual and unexpected changes in voltage that could damage the electrical components.

Posted in Accessories and Parts, Benchtop, ColorFlex EZ, ColorFlex EZ Citrus, ColorFlex EZ Tomato, ColorTrend HT Meter, D25Lt Colorimeter, Instruments and Software, MiniScan EZ, On-Line, Portable, SpectraProbe S/8, SpectraProbe XE, SpectraTrend HT, UltraScan PRO, UltraScan VIS Tagged fuse, fuses, power, sensor requirements, Universal power supply, UPS, voltage Leave a comment

Can Power Supplies in HunterLab Instruments be used everywhere?

Posted on September 19, 2012 by Ken Phillips

FAQ: “We need to take our Agera instrument to Germany for some plant trial testing.  Our machine is a US spectrophotometer 110v unit and, obviously, the power supply in Germany is 220v. The label on the back of the instrument says ‘110v-220v’, which sounds a little ambiguous to me.  Do we need a voltage transformer […]

Posted in Accessories and Parts, Benchtop, ColorFlex EZ, ColorFlex EZ Citrus, ColorFlex EZ Tomato, ColorTrend HT Meter, D25Lt Colorimeter, Instruments and Software, On-Line, Portable, SpectraProbe S/8, SpectraProbe XE, SpectraTrend HT, UltraScan PRO, UltraScan VIS Tagged power, sensor requirements, Universal power supply, UPS, voltage Leave a comment

Optimal inter-instrument agreement and communication of color values

Posted on September 17, 2012 by Ken Phillips

To communicate color values effectively, completely specify the 6 parameters of your measurement method and verify that your color measurement is repeatable. These are the key factors to ensure inter-instrument agreement. The best inter-instrument agreement in color measurement at multiple locations occurs when a product is measured with the same instrument model from the same […]

Posted in Color and Appearance Theory Tagged ASTM, color communication, color measurement, color scales, communications, inter-instrument agreement, ISO, JIS, MDL mean detection limit, measurement method, measurement parameters, physical measurement, whiteness index Leave a comment

How do I measure Haze with EasyMatch QC?

Posted on August 24, 2012 by Ken Phillips

Haze is the scattering of light by a nearly clear specimen  that results in a slightly cloudy appearance when the sample is viewed in transmission.

Posted in EasyMatch QC, EasyMatch QC-ER Tagged haze, scattering, total transmission, transmission haze, Y Diffuse, Y Total Leave a comment

How do I perform an DQ IQ OQ PQ RQ using EasyMatch QC-ER?

Posted on August 3, 2012 by Ken Phillips
Posted in EasyMatch QC-ER, Pharmaceuticals Tagged Design Qualification, DQ, electronic records, electronic signatures, ER, EZMQC-ER, FDA 21 CFR Part 11 ERES, Installation Qualification, IQ OQ PQ, IQOQPQ, Maintenance Qualification, MQ, Operation Qualification, Performance Qualification, Requalification, RQ Leave a comment

What is the Hunter Rd, a, b Color Scale?

Posted on July 12, 2012 by Ken Phillips

The Hunter Rdab opponent-color scale, developed in 1943, was an early version of the Hunter L, a, b scale.  Instead of L, Rd is used to designate lightness and is identical to the CIE Y Brightness/Luminosity value.  Sometimes the Rd, a, b color scale is shown as LRd, aRd, bRd.

Posted in Color and Appearance Theory Tagged color scales, Rd Leave a comment
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