Blue and red litmus paper and phenophthalein strips are mixed-indicator tests designed for fast, accurate, and reliable pH solution testing.
Blue and red litmus paper and phenophthalein strips are mixed-indicator tests designed for fast, accurate, and reliable pH solution testing.
pH Indicators, Standard Full Range, Reel, 1.0 to 14.0 range, 7mm x 5m 1/pk
Acid Alkali Test Papers, Book, Litmus Blue, 10 books of 20 strips
Acid Alkali Test Papers, Book, Litmus Red, 10 books of 20 strips
PANPEHA pH 0-14, 200/pk