Ammonia Alert is an innovative color device for continuously detecting and monitoring toxic free ammonia. A sensor changes reversibly from Yellow to green to Blue, relative to the ammonia concentration. No test Kits, chemicals, or procedures are needed. The device detects less than 0.05 mg/L (ppm) f...

The BAT-200 Battery Tester indicates the amount of charge remaining in standard and rechargeable batteries. The analog display needle moves on a color-coded, calibrated scale to quickly identify 'good' (green), 'low' (yellow), and 'replace/recharge' (red) battery status.

The Mystical Fire Flame Colorant produces brilliant and captivating colors! It can be used for your indoor fireplace or outdoor fire pit. Try the fire flame colorants once, and you will be sure to reorder whenever you plan to have fun again. A must-have for Summer or Winter holiday fun! Whether it's...

The Mystical Fire Flame Colorant produces brilliant and captivating colors! It can be used for your indoor fireplace or outdoor fire pit. Try the fire flame colorants once, and you are sure to reorder whenever you plan to have fun. A must-have for Summer or Winter holiday fun! No matter if it is Win...

Made with professional grade lens material. Better clarity. Compatible with HERO4 HERO3+ Standard Housing Only. Includes filter mounting frame for standard housing, 5 pieces of lens filters, one safety tether and one filter carrying bag. Full water depth coverage and perfect for diving (Blue water:...

Super Bright 3mm led 5mm led diode kit with color white red blue green yellow---300pcs,comes with a handy storage box5mm White LED Diode Brightness: 24000-26000mcd.Item:5 Assorted Color LED Light Luminous Diodes Kit Package: 3mm Luminous LED Diodes:40pcs yellow, 40pcs green, 40pcs blue, 40pcs red,...

Item:5 Assorted Color LED Light Luminous Diodes Kit Usage:Use for electronic and Eletrical Experiment,and these light-emitting diodes work well for a wide variety of applications including Arduino projects. Package: 3mm Luminous Diodes:40pcs yellow, 40pcs green, 40pcs blue, 40pcs red, 40pcs white...

IC test lead set of 5 jumper mini-grabber test leads. Keep this test lead set on hand for your next electronics project. Set includes multiple color coding. Lead Length 16-Inch.

The 4 Way Tube Rack by Heathrow Scientific allows users to create as large a rack as they need by linking together multiple units end to end or side to side. These tube racks are made from heavy-duty polypropylene and feature a unique system of tabs and slots, which facilitate easy connection and a...

The Eastern Jungle Gym Easy 1-2-3 A-Frame Swing Set Bracket makes building a Swing Set easier than ever! Let us take the guess work out of your DIY swing set with our best selling A-Frame Bracket. Our A-Frame Brackets are the #1 swing set brackets on the market. Made with heavy-duty steel they featu...

Contains: 1/16" dia. (60 pieces), 3/32" dia. (35 pieces), 1/8" dia. (25 pieces), 3/16" dia. (20 pieces), 1/4" dia. (10 pieces) and 3/8" dia. (10 pieces) in assorted colors (Black, Red, Clear, Green, Blue, Yellow, and White)

Staedtler-Mars Lumocolor Markers write on nearly all surfaces. Marks on most plastics, metal and glass. Permanent. Series 318 set of eight: Black, Red, Blue, Green, Orange, Yellow, Brown & Purple. 0.6mm.