Red Litmus Test Paper

Red Litmus Test Paper

  • Pocket-sized, lightweight vial
  • No color chart necessary
  • Customizable label
  • Bulk quantities available
  • Also available in sheets or books
  • 100 test strips

Product Description

Red Litmus Test Paper

Red Litmus test paper is a foolproof pH test to determine if something is a base. The Red Litmus test paper does not come with a color chart as it cannot provide you with a defined pH value. The test strip will turn blue if dipped into an alkaline solution (pH >7).


  1. Remove one Red Litmus test paper from the vial, being careful not to touch the strip anywhere other than where you grasp it.
  2. Dip the strip into the solution to be tested for 1-2 seconds and remove.
  3. The test strip will turn blue in seconds if dipped into a solution that is a base, and will remain unchanged if not.

NOTE: The solution must be water-based.

Disclaimer: Precision Laboratories products are not approved for use as medical devices. Products and product information is for informational purposes only and not intended for use to diagnose, treat, cure or prevent any medical condition. Consult a medical doctor when needed.

AD190; AG190; 190/500; DQ440; DR440; B525; GG525; 190; 190-12V-100; 190-25V-100; 190-144V-100; 190-500V-100; 290; 290-24-810; 290-500-810; 390; 390-1-25; 390-1V-8-25; 390-12V-8-25

Additional Information

Vial Dimensions:

.75″ (D) x 2.75″ (H) [19mm (D) x 70mm (H)]


3 Years Minimum

Strip Dimensions:

1.875" (L) x .25" (W) [48mm (L) x 6mm (W)]

Item # (1):

190-12V-100 (12 vials, 100 strips/vial)

Item # (2):

190-25V-100 (25 vials, 100 strips/vial)

Item # (3):

190-144V-100 (144 vials, 100 strips/vial)

Item # (4):

190-500V-100 (500 vials, 100 strips/vial)

Item # (5):

290-24-810 (24 sheet,s 8" x 10" [200mm x 250mm])

Item # (6):

290-500-810 (500 sheet,s 8" x 10" [200mm x 250mm])

Item # (7):

390-1V-8-25 (1 vial of 8 books, 25 sheets/book)

Item # (8):

390-12V-8-25 (12 vials of 8 books/vial, 25 sheets/book)


Additional sheet sizes available upon request

Product Documentation