Choosing a Dye color:

Choice of dye color should be based on contrast to the background color of the water body. For instance, FWT Red Dye offers greater contrast to heavy concentrations of algae.

Fluorescent FWT Red Dye and FLT Yellow/Green Dye because of their fluorescent nature have a greater apparent contrast than non-fluorescent blue.

For fluorometric testing use fluorescent FWT Red 200 Dye, it is more easily detected by fluorometric equipment.

Fluorescent FWT Red Dye and FLT Yellow/Green Dye may also be detected visually with a simple hand-held laboratory black light (UV) at significantly lower levels - in the range of 10ppb.

Blue Dye is frequently used for decorative effects, evaluation of household systems, and generally where the blue may be more acceptable to public view.

FLT Yellow/Green Dye disappears in sunlight more rapidly than Fluorescent FWT Red Dye and non-fluorescent Blue Dye.

All dye colors are resistant to the absorption of suspended matter.

Choosing a Dye form:

	Overall Ease of Use	Detection Method			Dye Dispersion Rate	Water Volume
		Visual	U.V.*	Fluoremeter		Small	Medium	Large
Dye Tablets	E	E	E	F	Rapid			-
Liquid Dye	VG	E	E	E	Very Rapid
Powder Dye	G	VG	VG	G	Moderate	-
Wax Dye	VG	VG	G	P	Slow/Moderate	-		-

Choosing a product for fluorometric detection:

* Applies only to Flourescent FWT Red, FLT Yellow/Green, and FLT Orange

These are general guidelines only. Kingscote Chemicals' Bright Dyes® are used for a wide number of applications in many different water locations and conditions. Customers are encouraged to carefully read the available technical data bulletins and material safety data sheets, and to conduct their own evaluations of the suitability of any particular dye color or dye form for their own unique requirements.

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