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

Do you have a source for EP Opalescence Standards?

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

Measuring the Color of Clear Liquids

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

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

Measuring the Color of Clear Liquids

Do you know of an independent test lab that can measure APHA/Pt-Co/Hazen Color?

What is the CP – Chinese Pharmacopeia Color Scale?

Do you have a source for Transparent Liquid Haze Standards?

What is a visual limit for Haze%?

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Blogs

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

Do you know of an independent test lab that can measure APHA/Pt-Co/Hazen Color?

Posted on June 6, 2014 by Ken Phillips

Contact the following and ask for “APHA/Pt-Co/Hazen Color testing per ASTM D1209 and D5386″. 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 needs, providing appropriate solutions […]

Posted in Chemical, Pharmaceuticals, Plastic, UltraScan PRO, UltraScan VIS Tagged APHA, cell path length, Hazen, Platinum Cobalt, Pt-Co, PtCo, test lab Leave a comment

What is the CP – Chinese Pharmacopeia Color Scale?

Posted on May 5, 2014 by Ken Phillips

FAQ: “More customers are asking us about Chinese Pharmacopeia Numbers… is this similar to EP/USP Color? 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 needs, providing […]

Posted in Pharmaceuticals, UltraScan PRO, UltraScan VIS Tagged Chinese Pharmacopoeia Color Standards, CP, EP, European Pharmacopoeia Color Standards, pharma, visual color standards Leave a comment

Do you have a source for Transparent Liquid Haze Standards?

Posted on February 8, 2014 by Ken Phillips

HunterLab Distributor FAQ: “I have a new pharma customer doing color measurements.  They also want to do haze measurements and we had a discussion about haze standards.  Would our plastic haze standards be fine or is there a liquid haze standard out there?” Ken PhillipsMr. Philips has spent the last 30 years in product development […]

Posted in Pharmaceuticals, UltraScan PRO, UltraScan VIS Tagged clear, EPOP, haze, hazey, NTU, NTUs, opalescence, scattering, total transmission, transmission haze, turbidity 2 Comments

What is a visual limit for Haze%?

Posted on February 7, 2014 by Ken Phillips

FAQ: “What is a visual limit for Haze%? When should I be able to see a difference in a sample?” A perfect clear of 0% would be air for transparent solids and the transmission cell of a defined path length filled with DI water for transparent liquids. It should also be noted that the Haze% […]

Posted in Chemical, Color and Appearance Theory, Pharmaceuticals, Plastic, UltraScan PRO, UltraScan VIS Tagged clear, haze, hazey, scattering, total transmission, transmission haze Leave a comment
Page 1 of 3123»

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