Coffee Maker Scale Prevention Test Strips

SKU: 33813-Hard

$13.95USD or lower Each

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Quantity1+2+ 3+ 10+ 
Price for each$13.95USD$13.80USD$13.60USD$13.05USD
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[5]   1 Reviews    | Write a Review

Check tap or filtered water hardness before brewing. Indigo® Water Hardness Test Strips help prevent scale buildup in coffee makers, espresso machines, and ice makers for better taste and performance.

Scale buildup shortens the life of coffee makers, espresso machines, and beverage dispensers while affecting flavor and flow rate. Indigo® Water Hardness Test Strips let baristas, service technicians, and coffee enthusiasts measure calcium and magnesium levels instantly. Regular testing identifies whether descaling or filtration adjustments are needed, saving maintenance costs and preserving brew quality.

Details Specs Docs Reviews
Details
Discipline / User Key Learning or Application
Food Science Study how mineral balance influences coffee extraction chemistry and sensory quality.
Hospitality / Culinary Apply hardness testing for preventive maintenance and beverage consistency.
Chemistry / Environmental Science Relate water hardness to calcium carbonate precipitation and scaling kinetics.
Appliance Technicians / Consumers Use hardness readings to guide descaling intervals and filter selection.

Best Practices

  • Test source water before installing or refilling the reservoir.
  • Compare results to manufacturer’s recommended hardness range (typically 50–100 ppm CaCO3).
  • Use filtration or softening systems for hard water above 150 ppm.
  • Descale equipment when buildup or performance decline is observed.
  • Record results periodically to detect seasonal or regional changes.
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Specifications
  • The number of strips (50) vial is approximate.
  • Shelf life is 3 years but if bag is properly sealed, they should be good for a minimum of 5 years or more.
  • Strips will degrade if exposed to sunlight and come in a dark bag to prevent this. Do NOT transfer to a clear bag or strips will degrade quickly.
  • Test strips are made in USA & calibrated with NIST standards.
Documentation

Test Strip Documentation
Stability Statement Certificate of Analysis SDS
Indigo Water hardness test strips 0-500ppm Stability Statement Indigo Water hardness test strips 0-500ppm Certificate of Analysis Indigo Water hardness test strips 0-500ppm SDS
Reviews (1)
2023-08-10

I wanted to find out how hard the water here is, because some water is used with the HVAC condenser on the hottest days. My tap water is very hard - 500PPM was indicated. I knew the water was hard, but not that hard. By contrast, the "5-gallon filtered bottled water" from the self-fill machine at the grocery store showed "0" ppm hardness. It is obvious I will have to install a filter for the condenser water spray so that calcium mineral deposits do not build up on the aluminum coils. The purchase of these test strips was well worth it!

— Patrick
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