Iron Test Strip 0-500 PPM for Measuring aqueous Fe2+ (Ferrous) Iron in Water Samples [50 Strips] NOT for The Human Body.

pH Test Strips for Wine Making, Homebrew, Acidity, 2.8 to 4.4 pH [Vial of 100 Plastic Strips]

Science Lab Labeling Tape Variety Pack, 500 Inches Long x 1/2 Inch Width, 1 Inch Diameter Core [5 Rolls of Assorted Colors] for Color Coding and Marking

Lab Labeling Tape Variety Pack, 500 Inches Long x 1 Inch Width, 1 Inch Diameter Core [5 Rolls of Assorted Colors] for Color Coding and Marking

Chlorine Sani Test Strips for Food Service Restaurant Sanitizer Precision Bleach Test Paper, 10-200 ppm [100 Paper Test Strips]

Iron Test Strips, 0-100 ppm [Vial of 50 Strips] for Measuring Free Soluble Iron (Fe2+ and Fe3+)

Scientific Glucose Test Paper Strips for Food Science or Osmosis/Diffusion Experiments (Bag of 40 Paper Strips)