Three Ways to Order Your Science Supplies

Online - Pay by credit card, check or your account.

By Phone - Call us at 800.628.7748
Mon. - Thurs. 7:30 - 4:00 pm, Fri. 7:30 - 3:00 pm


By Fax - Fax your order with our
pdf form.

Gun Shot Residue Presumptive Test Kit


Innovating Science™.

This is a two part test to determine whether a surface has been exposed to a discharged firearm. A rapid color change takes place to verify the presence of nitrates and lead.

Part A - 1 5 ml Diphenylamine Sulfuric Acid Solution UN1830
Part B - 1 5 ml Sodium Rhodizonate, 0.5% Aqueous Solution
Part C - 1 5 ml Lead Nitrate, 0.05M Solution
20 Alcohol Swabs

Contains instructions and enough materials for 30 tests.

Go back