General Business ServicesMeasurement & Dilution Accuracy2MildOwner

I need an affordable way to test acidity that is reusable or cheap, avoiding the high cost of specialized acid test solutions.

Existing acid test solutions cost $16 while litmus paper is $0.03 per strip, but litmus paper is not reusable and the user is unsure if it works for their application.

27
0
Opp. Score
27
Severity
2Mild
Willingness to Pay
none
Added
May 7, 2026

Workarounds Described

  • using litmus paper as a cheap substitute for acid test solution
  • considering blowing a small sample onto litmus paper to avoid using expensive solution

Implied Software Gaps

  • a digital acidity tester that eliminates the need for disposable consumables and provides accurate results
App Concept

ReAcid Test Pro

A reusable electronic acidity tester that gives instant, accurate readings for precious metals testing. Simply touch the probe to the material and get a digital readout, eliminating the need for consumable test solutions or paper strips.

Key Features
  • Reusable digital probe with no consumables
  • Instant digital readout of acidity level
  • Calibrated for precious metals testing (gold, silver, platinum)
  • Durable, pocket-sized design for field use
Target Users: Jewelers, pawnbrokers, scrap metal dealers, and hobbyists who test precious metals frequently and want to avoid recurring costs of test solutions.
Revenue Model: $89 one-time hardware purchase, with optional $19/year calibration subscription

Existing Solutions Mentioned

litmus paperacid test solution

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