!
!
!

Tartaric Acid

Thiox (Thiourea Dioxide)

Tin (Stannous Chloride)

Urea (dye resist)

16 oz.

Zinc

pH papers

per roll
Select:
Acidic (3.5-6.5) $8.95, Alkaline (6.5-13) $11.40, Wide Range (0-13) $11.40