P.T.C. test paper, 100/vial
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Magnesium ribbon, 60 cm
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pH papers, 1-14 range, 80/pkg
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Magnesium chloride, 30 g
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$1.40
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For heredity taste test.
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$1.50
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This piece of thin magnesium ribbon is about 4mm wide and 60cm long. (flamm... more
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$1.50
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Use these test strip papers to easily measure pH. Comes with color guide.
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$2.75
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Hexahydrate form.
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Potassium chloride, 30 g
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Methyl cellulose, 1.5%, 30 ml
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Potassium ferrocyanide, 30 g
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Methyl violet, 1 g
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$3.00
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Granular form.
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$3.25
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Useful to quiet protozoa for microscope viewing.
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$3.25
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This chemical may be substituted for sodium ferrocyanide in many experiment... more
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$3.50
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pH indicator. Yellow at 0.1 pH to violet at 2.7 pH.
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Oxalic acid, crystals, 30 g
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Paradichlorobenzene, 30 g
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Magnesium sulfate, 100 g,
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Manganese dioxide, 15 g
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$3.50
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Dihydrate form. Poison; read warning labels carefully.
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$3.75
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Same chemical as moth crystals.
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$4.00
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Heptahydrate form. Also known as Epsom salt.
Here are projects that use ... more
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$4.25
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85% native powder. Oxidizer; read warning labels carefully.
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