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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.
   
   
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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Self-Developing LeakTracers for Piping Systems: FA-1A and GA-1A
These concentrated liquid tracers contain corrosion inhibitors, chelating agents, mold inhibitors and water soluble powders which dry on the outside of a leak, showing the exact point and extent of the leakage long after the water evaporates. They were formulated to mix instantly in water or water/glycol solutions (and are often used to find coolant leaks). Both tracers can easily be removed with a dry cloth. FA-1A has a strong yellow-green fluorescence under UV (400nm) light. When the powder is dry, the fluorescence fades but the yellow powder is clearly visible. GA-1A is a clearly visible green indicator. When mixed one part to 25 parts of water, FA-1A can find a leak as small as 1x10-4 and GA-1A a leak as small as 1-10-3 cc/sec. (ASTM 9.3.4). When used to monitor a water or coolant piping system, 1% by volume can be used. (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)
   

 

Water Leak Detector - Warm Water Leaks or Low Humidity (PiNPOiNT WDP-217):
WDP-217 is an aerosol color change developer, which, when sprayed on the points of suspected leaks (joints, welds, connections) forms a white powder. On contact with even very small water leaks it undergoes an irreversible blue-green color change at the exact point of the leak. The coating is nontoxic and can easily be removed with a damp cloth. Condensing humidity can cause false indications, it is best used with warm water or in low humidity applications. (ASTM 9.3.2.1 Visibility Enhancer).
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Water Leak Detector - Color Water Leaks in a Humid Atmosphere: a 2-part system
HYDRO-1 and HYDRO-2

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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Color Change Leak Detection Paper for Water: W-15A & W-15A-M
W-15A sensitized paper leak detection monitors for water are available either self adhesive or not. They can be cut in strips and placed under or around a potential leak site. They can be used inside water-proof containers, such as electrical switch boxes, to detect if moisture is getting in. These monitors are sensitive to small water leaks. The color change upon sensing water is from white to green. Each sheet is individually sealed and packed 12 sheets to a carton.
W-15A-M Water Detecting Monitor
4 x 4.25 with adhesive backing
W-15A Water Detecting Monitor 4 x 8

   
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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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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