The colours of pharmaceutical powders, such as sorbitol, microcrystalline cellulose or dibasic calcium phosphate anhydrous, are often measured as an incoming QC check to ensure lot-to-lot consistency. The preferred method for measuring powders is to use a Directional  45°/0° reflectance geometry for its ability to measure colour the way the human eye sees colour. This is the geometry that is recommended by HunterLab for colour measurement of opaque materials that will be viewed by the customer.

- Pharmaceutical Pressed Powder Plaques

In many cases, mixtures of finely divided drugs that are eventually made into capsules, caplets, creams and other forms of medicines are pressed into plaques for the purpose of coluor measurement prior to final processing to ensure lot-to-lot and batch-to-batch colour consistency.



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HunterLab UltraScan VIS

HunterLab UltraScan VIS
HUNTERULTRASCANVIS

Diffuse d/8° sphere Geometry, Reflectance and Transmittance, 360-780 nm
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HunterLab LabScan XE

HunterLab LabScan XE
HUNTERLABSCANXE

Directional 0°/45° Geometry, Reflectance, 400-700 nm
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HunterLab UltraScan PRO

HunterLab UltraScan PRO
HUNTERULTRASCANPRO

Diffuse d/8° sphere Geometry, Reflectance and Transmittance, 350-1050 nm
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