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$18.19Industrial Test Systems SenSafe 480125 Iron Check, 2 Minutes and 30 Seconds Test Time, 0-5ppm Range (Pack of 30 Test Strips)Amazon- $18.72Industrial Test Systems WaterWorks 480048 Mercury Check, 2 Minutes and 30 Seconds Test Time, 50-1000 ppb Range (Bottle of 50)Amazon
- $139.99Newly Upgraded Electric Toothbrush 2 Minutes Timing, 30 Seconds Pause Electric Toothbrush with 6 Brush Heads 5 Cleaning Modes, Waterproof Smart Timer Electric Toothbrush 45 ° RotatableAmazon
- $17.933in1 Alarm - Door Alarm with Delay for Freezer/Home/School, 0/5/10/30/60 Seconds, 2/5 Minutes, Close Door Reminder, 80 to 120 dB, Time Delay Door Chime When Left Open, No More Door Ajar. (White)Amazon