Blue Litmus Test Strips, 100 Strips/Vial

Precision Laboratories® Blue Litmus Paper, 100 Strips/Vial, 180-12V-100

Features:

• Foolproof pH test strip to determine if something is acidic
• Does not come with color chart as it cannot provide defined pH values
• Will turn red if dipped into acidic solution (pH <7) — will remain unchanged in alkaline solution
• Strip will turn various shades of red, getting darker more acidic solution is
• Blue paper is blue at pH 8 — at pH 7, strip maybe just  little red — real change to red starts with pH 6.5 and lower
• Strip dimensions:  1.875 in. (L) x 0.25 in. (W) / 48 mm (L) x 6 mm (W)
• Stored in pocket sized vial
• 3 year shelf life