Quick Stress Test Biofeedback Cards - plastic with bio-medical.com logo - 20 pack

Temperature indicator, credit card size, plastic, with bio-medical.com logo. Liquid crystal square turns color as it is warmed by the finger. A color grid on the card compares the crystals color to Stressed, Tense, Normal or Calm. 20 cards per package.

Quick Stress Test Biofeedback Cards are credit-card sized plastic cards with a liquid-crystal temperature indicator. Touch the indicator with your fingertip and it changes color as it warms, providing a simple visual cue of fingertip temperature changes during relaxation practice.

How They're Used

• Place a fingertip on the liquid-crystal square and wait for the color to stabilize.
• Use the color shift as visual feedback while practicing paced breathing or other relaxation techniques.
• Commonly used in sessions, classrooms, workshops, or as a take-home self-regulation tool.

Key Features

• 20 cards per pack
• Credit-card size, durable plastic format
• Liquid-crystal temperature indicator that changes color when warmed by the finger

Notes

• This is a simple temperature-based visual feedback tool, not a diagnostic device.
• Readings can vary with ambient temperature and how warm or cold the hands are at baseline.