No-Rosion Water Test Packet

The affordable new way to test source water, and be certain that it is of sufficient quality to be safely used as engine coolant. 

Each packet contains four individually-sealed strips that test for: (1) chloride, (2) hardness, and (3) pH.

Chloride in water is very corrosive to aluminum and it's alloys. For this reason, ASTM D3306 lists the maximum allowable chloride for engine coolant at 25 ppm. At levels higher than this, chloride can stimulate rapid intergranular corrosion of aluminum/alloys. Due to the autocatalytic nature of this corrosion, it continues until the entire surface of the aluminum has been penetrated. In radiators, this results in leaks/failures.

Hardness in water is a major contributor to scales and deposits that can form on metal surfaces inside a cooling system. Scales on 1/16th of an inch thick can reduce heat transfer by up to 40%, leading to overheating.

The test takes only 45 seconds to complete, and is as easy as dipping a strip into coolant, and comparing three color pads to a chart. At the conclusion of each test, you'll know whether water is safe to be used as coolant.  





DIRECTIONS FOR USE: With engine off and cool, collect coolant sample from the radiator/petcock. DO NOT collect from a coolant recovery or overflow system. Coolant must be between 50 degrees F. to 130 degrees F. when tested.

Remove a strip from one packet. DO NOT touch pads on the end of the strip. Discard unused strips if the pads at the end of turned dark brown.

Dip strip in coolant sample for one second, remove, and shake strip briskly to remove excess fluid.

Forty-five seconds later, compare and record results in the following order: (a) Compare hardness reading (end pad) to color chart and record result, (b) Next compare pH (middle pad) to color chart and record result, (c) lastly, compare the chloride to color chart and record result.

All three readings must be completed no later than 75 seconds after dipping the strip.

It is okay to estimate a value between color blocks; if uncertain about the color match, estimate towards the lighter color block.

Once readings are complete, the chart will indicate whether water is safe to be used as engine coolant.





DID YOU KNOW...   No-Rosion was in the cooling systems and fuel systems of fifteen award-winning classics at the 2023 Pebble Beach Concours d'Elegance!

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