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How do you validate a APHA/Pt-Co/Hazen 500 liquid color standard?

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Do you have a source for EP Opalescence Standards?

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Is it possible to create ASTM traceable haze standards above 30%?

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Measuring the Color of Clear Liquids

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The details of how HunterLab sphere instruments conform to ASTM D1003 Section 8: Procedure B Spectrophotometer for transmission haze measurement

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How is ASTM D1003 Transmission Haze measured at levels > 30%?

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Measuring the Color of Clear Liquids

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How do you validate a APHA/Pt-Co/Hazen 500 liquid color standard?

Posted on June 1, 2015 by Ken Phillips

As described in Section 6 of ASTM D1209, there are 2 criteria to validate a APHA/Pt-Co 500 standard: Ken PhillipsMr. Philips has spent the last 30 years in product development and management, technical sales, marketing, and business development in several industries. Today, he is the global market development manager for HunterLab, focused on understanding customer […]

Posted in Chemical, Color and Appearance Theory, EasyMatch QC, EasyMatch QC-ER, Pharmaceuticals, Plastic, UltraScan PRO, UltraScan VIS Tagged absorbance, APHA, APHA color standard, Hazen, Pt-Co, PtCo, validation Leave a comment

Do you have a source for EP Opalescence Standards?

Posted on April 1, 2015 by Ken Phillips

The reference document that defines the visual EP Opalescence scale is: EP 2.2 Physical and Physico-Chemical Methods for color and opalescence EP – European Pharmacopoeia, Section 2.2 Physical and Physico-Chemical Methods, Unit European Pharmacopeia, Strasbourg, France (1997: 15-16) www.pheur.org This method describes the visual evaluation of scattering or opalescence in near clear liquids, typically pharmaceutical, […]

Posted in Color and Appearance Theory, Pharmaceuticals Tagged EP, EPOP, European Pharmacopoeia Opalescence Standards, opalescence, opalescence standards Leave a comment

Is it possible to create ASTM traceable haze standards above 30%?

Posted on September 12, 2014 by Ken Phillips

The current, available ASTM D1003 Haze Standards have nominal Haze% values of 1, 5, 10, 20 and 30 with air (transparent solids) or the transmission cell filled with DI water being 0 (transparent liquids). Here are some thoughts on further options. Ken PhillipsMr. Philips has spent the last 30 years in product development and management, […]

Posted in Chemical, Pharmaceuticals, Plastic, UltraScan PRO, UltraScan VIS, Uncategorized Tagged ASTM D1003, ASTM D1003 agreement, haze, Procedure B, transmission haze Leave a comment

Measuring the Color of Clear Liquids

Posted on August 7, 2014 by Ken Phillips

HunterLab diffuse sphere instruments are often used to measure liquid samples, especially clear liquids. The liquid fragrance shown above is one such example of a clear liquid. The fragrances is so clear that is resembles water. Fragrances such as this are often added to cleaning supplies, air fresheners, or other consumer products. One of the […]

Posted in Chemical, Other, Pharmaceuticals, UltraScan PRO, UltraScan VIS Tagged clear liquids, fragrance, water like liquid Leave a comment

The details of how HunterLab sphere instruments conform to ASTM D1003 Section 8: Procedure B Spectrophotometer for transmission haze measurement

Posted on July 2, 2014 by Ken Phillips

HunterLab sphere instruments with CIE d/8 geometries conform to the requirements of ASTM D1003 Section 8: Procedure B Spectrophotometer. The measurement of transmission haze using Procedure B instruments will be in close agreement with ASTM D1003 Procedure A Haze meter. Here is a more detailed description of how the HunterLab UltraScan PRO and UltraScan VIS […]

Posted in Chemical, Pharmaceuticals, Plastic, UltraScan PRO, UltraScan VIS Tagged ASTM D1003, ASTM D1003 agreement, haze, Procedure B, transmission haze Leave a comment

How is ASTM D1003 Transmission Haze measured at levels > 30%?

Posted on June 13, 2014 by Ken Phillips

FAQ: “We have a scientist here who is looking at films containing small bubbles and attempting to do measure them by measuring Haze% on a HunterLab spectrophotometer. I suspect her problem in obtaining numbers that “make sense” from what you get from just eyeballing the samples (and trying to look through them at the outlines […]

Posted in Chemical, Pharmaceuticals, Plastic, UltraScan PRO, UltraScan VIS Tagged ASTM D1003, CMR-2760 set, haze standards Leave a comment

Measuring the Color of Clear Liquids

Posted on June 13, 2014 by Ken Phillips

One application that often comes up is measuring the color of clean liquids such as the fragrance sample seen above. This liquid fragrances is clear and looks almost like water. Fragrances such as this are often added to cleaning supplies, air fresheners, or other consumer products. One of the problems that this type of sample […]

Posted in Chemical, Pharmaceuticals, UltraScan PRO, UltraScan VIS, Uncategorized Tagged clear, liquid Leave a comment
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