Fluorescein Liquid Dye Rx  is a water-based fluorescent tracer dye that meets the minimum biodegradation requirements, removing the need for a substitution warning unlike the standard fluorescein leak tracing dyes. Fluorescein Liquid Dye Rx  provides a fluorescent colour which is visible to the naked eye and can be detected subsea by cameras, fluorimeters calibrated to the appropriate excitation / detection wavelength
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Fluorescein Liquid Dye Rx  is lower in toxicity towards operatives and marine organisms than other leak testing dyes, such as Rhodamine and is non-hazardous for supply and transportation.It is compatible with Rxsol Hydrotech 367 Rx corrosion inhibitors and oxygen scavengers.

Technical Specifications:

Appearance	Liquid
Colour	Brown
Solubility	Soluble In Water.
Melting Point	0 °C
Relative Density	1.0-1.07 @ 20c
Ph-Value, Conc.	9-10
Viscosity	<5 Cps @ 20degc

Using Procedure:

Normal dose for application is approximately 100 ppm. Rx Marine  can not stipulate an exact dose for Fluorescein Liquid Dye Rx . This is due to the strength of colour required being determined by a number of scenarios e.g. style and sensitivity of detection apparatus, sea bed depth and tidal currents. Generally, as a rule of thumb, the dye must not be dosed at below 100ppm for visual detection.
Detection of Fluorescein Liquid Dye Rx has been proven using the  Leak Detection Systems.

Application:

Fluorescein Liquid Dye Rx   is a commonly used dye for hydro test operations .Fluorescein Liquid Dye Rx   is a brown liquid which produces a red / pink solution once diluted in water. The solution then produces an orange fluorescence when excited with a blue or green light. For subsea detection of Fluorescein Liquid Dye Rx, an optimum excitation wavelength  should be used.

Note: This article uses material from the http://rxmarine.com/