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Hydrostatic Testing Information
 

 
  Hydrostatic Testing - Products  
Additives, alternate fluids or color change developers can improve the speed and reliability of liquid leak testing. They can also increase the sensitivity of the test results. The number in parentheses after each product description indicates the paragraph in the ASTM Standard E1003 with which that product complies.

 

Water Detecting Powder (PiNPOiNT WDP-217):
This is an aerosol color change developer, which, when sprayed on the points of suspected leakage (joints, welds, connections), forms a white powder. Through capillary action, it helps draw water through leaks, spreading an indication to make it more visible and then it undergoes an irreversible blue-green color change indicating the exact point of seepage. The coating is non-toxic and can easily be removed with a damp cloth. WDP-217 should be used only when the temperature of the surface is higher than the dewpoint or the humidity is low enough to prevent condensation from causing false indications. (ASTM 9.3.2.1 Visibility Enhancer).
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Fluorescent Water Tracer Dyes (FT175):
These concentrated leak tracer dyes are biodegradable,non-toxic and immediately miscible in water. FT175 tracers come in four fluorescent colors (yellow, green, blue & orange, making multiple tests easy. Developed for water systems study, these tracers are  ideal for leak testing large systems or pipelines. (ASTM 11.3.2.2 & ASTM 11.3.2.3 Visibility Enhancers).  Available in 8 oz and gallon packages. 
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Visible Red Tracer Dye (RT-200):
This tracer is a concentrated, immediately miscible liquid dye, operating in the visible mode for water systems study,  ideal for leak testing large systems or pipelines. Biodegradable. RT-200 is diluted four ounces to 500 gallons. Available in 4oz and gallon and bulk containers (ASTM 9.2.2.2 & 9.3.2.3 Visibility Enhancers).
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Surface Tension Reducer (Immersit ClM150 & CIM200):

This concentrate, when added to water, in the ratio of 5% to 25% greatly decreases surface and interfacial tension causing a much greater volume of water to flow through a leak. CIM-150 is biodegradable and inhibited to prevent rust. CIM-150A has a much stronger rust inhibitor. CIM-200 has a wider temperature range. (ASTM 9.3.3 Lower Flow Resistance).
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Water Soluble Tracer (FA-1A):
This concentrated liquid tracer contain corrosion inhibitors, surface tension reducers and water soluble powders which dry on the outside of a leak developing the exact point of leakage long after the water evaporates. FA-1A is yellow fluorescent which is easily visible without a black light when dry. This concentrate should be diluted one part concentrate to between 25 to 50 parts water. It is chelated to perform in hard water. (ASTM 9.3.4).
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F-trace and R-trace (Concentrate):
F-Trace (yellow) and R-Trace (red) were developed by Rockwell to meet their need to test aircraft fuel tanks. They are an inexpensive, non-corrosive and non-flammable way to test large tanks (lines and pipes), including those which will contain hydrocarbons, such as gasoline, diesel or jet fuel. Either can be used as a fluorescent tracer with a 400nm UV light or can be used as a visible tracer. Dilute 1 gallon tracer to 99 gallons of de-ionized water. The tracers incorporate surface/interfacial tension additives that allow them to find leaks as small as 10-5 std cc/sec. The tracers are biodegradable and have a low sulfur and halogen content, so they work well with high performance metals such as stainless, nickel, aluminum and magnesium.  (ASTM 9.3.4)


   

HYDRO-1 and HYDRO-2
Color Change Detector for Cold Water Leaks in a Humid Atmosphere: a 2-part system
Hydro-1 is a color change developer sprayed on the outside of a potential leak site. Hydro-2 is a liquid tracer which goes into solution with the test water. Hydro-2 causes a visible color change from orange to purple when it comes in contact with the Hydro-1 developer. Use for testing of large tanks, vessels, complex piping systems, flexible containers and systems that inherently contain or will contain water. It can also detect leaks in valves, fittings and welds. It is formulated to prevent false indications due to high moisture in the air or cold piping that can condense water on its surface. Taking photographs of the test results makes work easy to substantiate.
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Fluorescent Penetrant (FL50):
This is a highly fluorescent (MIL-I-25135 group VI +) water washable penetrant which can be diluted with up to 30% water to provide a very sensitive, easily removable, low cost hydro test fluid. (ASTM 9.3.3 & 9.3.4)

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Ultrasonic Leak Detector (Sonic 3000):
This detector can quickly and easily spot leaks as small as Ix10-2 std cc/sec. This is a decade smaller than required by the ASTM standard. The Sonic 3000 can be used either with pressurized air or with its sound generator as an alternate to hydrostatic testing. It can be conveniently used as a quick precheck before the more time consuming hydrostatic test is performed (ASTM 10 Pretest).
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Hydraulic/Fuel Systems

Fluorescent Oil Additive (FAO-109):
This highly fluorescent concentrate can be added to oil systems in the ratio of I part to 50 parts. It is invisible in ordinary light but fluoresces strong yellow with black light illumination. The Portable AGC Black Light is Part # L102. The FAO-109 can be used to pinpoint leaks in hydraulic lines, engine crankcases and shock absorbers. (It is equivalent in sensitivity to ASTM 8.3.2C).
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Dye Fuel Additive (RD-58):
Meets the requirements of MIL-D-81298 and Air Force Technical Manual T.O. 42BI-1-10 (1970) for use in detecting JP-4 fuel leaks. The 58 series dye will mix with all hydrocarbons and many other fluids. It is particularly useful for checking leaks near hot sections, where the high temperature prevents the fuel from leaving a wet spot. When the dyed fuel evaporates, a residue is left as an identifiable leak indication.
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Oil Detecting Powder (ODP-210): ODP-210 forms an opaque white powder coating when sprayed onto welds, joints, fittings and other areas, of an oil containing system, which may be susceptible to leakage. A highly visible stain develops on the ODP-210 coating at points of oil leakage. ODP-210 can be easily removed by wiping with a damp cloth.
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Color Change Oil Detecting Powder (PiNPOiNT ODP-110) ODP-110 brushes on to joints and fittings to form a white developer type coating. When any hydrocarbon based fluid leaks the coating changes from white to red. It can be easily removed by wiping with a damp cloth.
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