These alterations allowed phosphors for Warm White, White and Daylight tubes, (with corrected color temperatures of 2900, 4100 and 6500 K respectively), to be made. The amounts of the manganese and antimony activators vary between 0.05 and 0.5 mole percent.The reaction used to create halophosphor is shown below. The antimony and manganese must be incorporated in the correct trace amounts if the product is to be fluorescent.

:6 + (3+x) + (1-x) + (2x) -> 2 + (3+x) + (3+x) + (2x)

Sometimes some of the calcium was substituted

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